TBD Meeting (3521-24)

VIENNA — Nipocalimab, iscalimab, and tibulizumab, but not lusvertikimab, appear to be promising new agents for Sjögren disease that warrant further investigation, suggest the results of four separate early clinical trials reported at the recent annual European Congress of Rheumatology (EULAR).

This is potentially good news for patients, as discovering new treatments that work for managing the various symptoms of Sjögren disease is a high priority, Jacques-Eric Gottenberg, MD, PhD, said when he presented the results of the phase 2 DAHLIAS study of nipocalimab during a late-breaking abstract session.

“All patients suffer from high burden of symptoms — pain, fatigue, and dryness; nearly 50% of patients have systemic complications; mortality is increased, so there is a high unmet need since no specific drug has been accepted so far,” said Dr. Gottenberg, who works at Strasbourg University Hospital in Strasbourg, France.

“The pathogenesis of the disease involves high B-cell activation, resulting in high IgG levels, and secretion of autoantibodies,” such as anti-Ro, anti-La, anti-Sjögren’s syndrome type A (anti-SSA), and anti-Sjögren’s syndrome type B antibodies, Dr. Gottenberg said.

Thus, one approach to reducing the disease burden is to try to lower circulating immunoglobulin G (IgG) levels and IgG-associated autoantibodies, which is how the monoclonal antibody nipocalimab works. Nipocalimab essentially blocks the interaction of IgG with the neonatal fragment crystallizable receptor and has already been shown to have efficacy in other autoimmune conditions such as myasthenia gravis and fetal and neonatal hemolytic disease, although not as hoped in rheumatoid arthritis.
 

The DAHLIAS Phase 2 Study

Now, results from the DAHLIAS study show that nipocalimab may also work in Sjögren disease, with significant improvement vs placebo seen in the primary endpoint of the total EULAR Sjögren’s Syndrome Disease Activity Index (clinESSDAI) at 24 weeks for one of the two doses of the drug that were tested.

The multicenter, placebo-controlled, double-blind study was conducted in 163 patients with moderate to severely active primary Sjögren disease. The latter was determined by having a clinESSDAI of 6 or higher and seropositivity for anti-Ro60, anti-Ro52, or both autoantibodies.

Dr. Gottenberg reported that the mean age of patients was 48 years; the majority (92.6%) were women and of White ethnicity (90.8%). The baseline clinESSDAI was a mean of 9.9; 98.1% had anti-Ro60, 80.6% had anti-Ro52, and 71.9% had anti-La antibodies.

In addition to standard of care, patients were randomly allocated to receive intravenous treatment every 2 weeks with nipocalimab 5 mg/kg or 15 mg/kg, or placebo.

At 24 weeks, the least squares mean (LSM) change in clinESSDAI from baseline was −3.74 for placebo, −4.08 for nipocalimab 5 mg/kg (P = not significant vs placebo), and −6.40 for nipocalimab 15 mg/kg (P = .02 vs placebo).

Nipocalimab 15 mg/kg also “demonstrated similar and consistent trends in other key efficacy endpoints,” Dr. Gottenberg said. This included improvements in the ESSDAI and EULAR Sjögren’s Syndrome Patient Reported Index (ESSPRI) and composite measures such as the Sjögren’s Tool for Assessing Response (STAR), Composite of Relevant Endpoints for Sjögren’s Syndrome (CRESS), and the Disease Activity Level. There were also improvements in the unstimulated salivary flow rate.

Safety findings showed no new concerns, with adverse events reported in 62.5% of placebo-treated patients and by 79.2% and 79.6% of patients receiving nipocalimab 5 mg/kg and 15 mg/kg, respectively. Serious adverse events were reported in a respective 5.4%, 7.5%, and 7.4%, including severe infections or infections requiring intravenous anti-infectives in 1.8%, 3.8%, and 1.9% of participants, although none was thought to be related to the study treatment. No opportunistic infections or any deaths were reported.

Thomas Schindler, PhD, senior clinical scientist at F. Hoffmann-La Roche Ltd., in Basel, Switzerland, commented from the audience: “This was a very impressive set of results, and I’m very surprised that its safety profile is so benign.”

Dr. Schindler wanted to know if there were any changes in the serum albumin level and if this manifested as any laboratory abnormalities, but there were no reported cases of severe hypoalbuminemia in the study.
 

The TWINSS Phase 2 Study

Similarly hopeful results were reported for iscalimab, a fully human IgG1 anti-CD40 monoclonal antibody that is given by subcutaneous injection, during a clinical abstracts session. Xavier Mariette, MD, PhD, head of the Rheumatology Department at Bicêtre Hospital, Paris-Saclay University in Paris, France, reported updated results of the phase 2b dose-ranging TWINSS study, showing sustained benefits at 48 weeks. The primary endpoint results at 24 weeks were recently published in The Lancet.

TWINSS was set up to assess the safety and efficacy of iscalimab given every 2 weeks vs placebo in two distinct cohorts of patients with Sjögren disease — one with moderate to severe disease with both systemic and symptomatic involvement and the other with low systemic involvement but high symptom burden.

Whereas patients in the first cohort who had moderate to severe disease (n = 173) were randomly allocated to one of three doses (150, 300, and 600 mg) of iscalimab or placebo for the initial 24 weeks, those in the second cohort (n = 100) were randomly allocated to a 600-mg dose or placebo. After the double-blind period ended, patients taking iscalimab continued on the dose they were taking for another 24 weeks, with those in the placebo arms switching to the 600-mg dose in cohort 1 and the 300-mg dose in cohort 2.

Topline results for those in cohort 1 with moderate to severe Sjögren disease were that the significant improvements in ESSDAI that had been seen at week 24 were maintained in those who continued iscalimab and improved in those who had switched from placebo.

LSM change from baseline in ESSDAI vs placebo at week 24 had been −3.0, −1.4, and −2.9 for the 150-, 300-, and 600-mg doses of iscalimab, respectively. Results at week 48 were a respective −7.6, −5.7, and −7.9. The LSM change for the placebo-treated patients who had switched to the 600-mg dose was −6.7.

Dr. Mariette reported “consistent improvement” in patient-reported outcomes, including ESSPRI, the Sjögren’s Syndrome Symptom Diary, Functional Assessment of Chronic Illness Therapy-Fatigue measure, and the Impact of Dry Eye on Everyday Life instrument. There was also a significant improvement in stimulated salivary flow rates.

Similar benefits were seen in the second cohort of patients who did not have systemic involvement but had a high burden of symptoms, with improved ESSPRI scores of a LSM change from baseline vs placebo of −2.29 for patients continuing iscalimab 600 mg treatment and −1.14 for those taking the 300-mg dose after being treated with placebo. Improvements were also seen in the other patient-reported outcomes used.

Regarding safety, Dr. Mariette reported that there were “no specific issues” seen in the patients who switched from placebo to iscalimab, either at the 300-mg or 600-mg dose. Any adverse event occurred in around 80% of placebo-treated patients and roughly 90% of those given iscalimab, and serious adverse events occurred in 11.4%, 14.3%, and 11.4% pf patients treated with iscalimab 150, 300, and 600 mg, and 4.9% of those given placebo and then 600 mg iscalimab.

“The safety seems equivalent to patients having received iscalimab from the beginning of the trial,” Dr. Mariette said, adding “the risk-benefit [analysis] seems positive in patients up to week 48.”
 

Phase 1 Trial of Tibulizumab

Further positive early trial results were reported by Michael Howell, PhD, chief scientific officer for Zura Bio, a biotech company based in Henderson, Nevada. During a poster tour at EULAR 2024, Dr. Howell presented some preliminary findings from a phase 1 trial of tibulizumab, a dual antagonist of interleukin (IL)-17A and the B-cell–activating factor (BAFF) engineered by fusing elements of ixekizumab (Taltz) and tabalumab together.

“The headline result for me is that the molecule does what it’s supposed to,” Dr. Howell told this news organization. “We have potent engagement of the IL-17 and BAFF pathways, and this sets the tone for additional exploration in rheumatologic diseases where there’s known activation of those two pathways,” he said.

Dr. Howell reported that total B-cell counts and lower levels of type 1 T helper cells were seen during the trial.

Over the years, Dr. Howell, an immunologist, has been involved in the development of many therapeutics, such as risankizumab (Skyrizi) and spesolimab (Spevigo).

“When I look at the molecules and the opportunity we have to do broader antagonism of pathways in a safe aspect, this is probably one of the most exciting,” he said.

The trial he presented included 25 people with a confirmed diagnosis of Sjögren disease and anti-SSA or anti-SSB antibodies. Patients received tibulizumab or a placebo for a total of 12 weeks via a subcutaneous injection. Various doses were tested: 30 mg, 100 mg, or 300 mg every 4 weeks, or 300 mg every 2 weeks.

Serum levels of both BAFF and IL-17A increased as expected in the tibulizumab-treated patients, and Dr. Howell reported that “it’s well tolerated. There’s no adverse event profile that caused any concern.”

As a phase 1 study, it was not powered to look at efficacy, but there were positive signals, Dr. Howell said, meaning that the drug is likely to be tested further in a phase 2 trial.
 

Lusvertikimab Phase 2 Trial

During the same poster tour, the null findings of a phase 2 trial of the anti-IL-7 monoclonal antibody lusvertikimab were presented by Benjamin Fisher, MD, professor of rheumatology at Birmingham University in Birmingham, England.

Dr. Fisher told this news organization: “It’s a negative study, at least over the 3-month period that we’ve studied it.” Whether longer durations of treatment may be needed is a question that currently cannot be answered, he added.

A total of 48 patients with Sjögren disease had been included in the trial from 19 different centers in Europe, the United States, and Australia. The mean age of the participants was 53.7 years, 87% were women, and the mean duration of disease was 5.0 years. Baseline ESSDAI and ESSPRI were 12.1 and 7.0, respectively. Half were receiving other background treatment, and 72.9% were anti-Ro or anti-SSA positive.

Lusvertikimab 750 mg or a matching placebo was given via intravenous infusion at weeks 0, 2, 4, 7, and 10.

The primary endpoint was the mean change in ESSDAI from baseline to week 13, which was the same, at −3.9, in both groups. There was also no significant difference between the groups in any of the other secondary endpoints that were used, including ESSPRI, Schirmer’s test, the ocular staining score, salivary flow rate, physician and patient global assessment, assessment of fatigue, quality of life, or the composite measures STAR and CRESS.

“This isn’t going anywhere,” said Dr. Fisher, asking what was going to happen next and if this meant the end of IL-7-focused therapy.

“For years, there’s been quite a lot of interest in this,” Dr. Fisher said. Sjögren disease is characterized by a sort of focal inflammation of the saliva glands, which is composed of both T and B cells in the early stages, probably a T-cell component and a B-cell component, he explained.

“IL-7 is thought to be an important cytokine for homeostasis of the T-cell compartment, so for maintenance of T central memory and effector memory cells,” he said. “So, the idea is that, if you block IL-7, you switch off T cells, and you may rebalance the immune system towards a more regulatory phenotype. Just that it didn’t work,” Dr. Fisher said.

“There’s large unmet need,” he said. “Sjögren’s is associated with poor health-related quality of life, [and] a large part that is symptom-driven — dryness and fatigue — which we have no real interventions yet for patients; there’s no licensed therapeutics for it.”

Dr. Fisher cited ianalumab as one of the front-runners for becoming the first licensed treatment for Sjögren disease. The novel BAFF-targeting antibody is already in phase 3 trials and is also showing promise for the treatment of systemic lupus erythematosus.

“Then there are CD40-targeting drugs; the ones most advanced are dazodalibep and iscalimab.” Commenting on the potential of iscalimab, Dr. Fisher said that it “seems to work — it improves systemic disease activity; it also leads to some symptomatic improvement, which has been difficult to demonstrate in Sjögren’s.”

Dr. Fisher added that “the nipocalimab data looks interesting, as do data on TYK2 inhibition.”

The DAHLIAS study was funded by Janssen Research & Development. Dr. Gottenberg has consulted for AbbVie, Bristol Myers Squibb (BMS), Galapagos, Gilead, Janssen, Lilly, Merck Sharp & Dohme, Novartis, Pfizer, Sanofi, and UCB. The TWINSS study was funded by Novartis. Dr. Mariette has consulted for BMS, Galapagos, GlaxoSmithKline, Novartis, Pfizer, and Servier. The tibulizumab phase 1 study was funded by Eli Lilly & Company. Dr. Howell is an employee of the developer, Zura Bio. The Institut de Recherches Internationales Servier sponsored the lusvertikimab trial. Dr. Fisher has consulted for Novartis, Roche, BMS, Galapagos, Janssen, Servier, UCB, and Sanofi and received funding to his institution for collaborative research from Janssen, Celgene, Galapagos, and Servier.
 

A version of this article first appeared on Medscape.com.

VIENNA — Nipocalimab, iscalimab, and tibulizumab, but not lusvertikimab, appear to be promising new agents for Sjögren disease that warrant further investigation, suggest the results of four separate early clinical trials reported at the recent annual European Congress of Rheumatology (EULAR).

This is potentially good news for patients, as discovering new treatments that work for managing the various symptoms of Sjögren disease is a high priority, Jacques-Eric Gottenberg, MD, PhD, said when he presented the results of the phase 2 DAHLIAS study of nipocalimab during a late-breaking abstract session.

“All patients suffer from high burden of symptoms — pain, fatigue, and dryness; nearly 50% of patients have systemic complications; mortality is increased, so there is a high unmet need since no specific drug has been accepted so far,” said Dr. Gottenberg, who works at Strasbourg University Hospital in Strasbourg, France.

“The pathogenesis of the disease involves high B-cell activation, resulting in high IgG levels, and secretion of autoantibodies,” such as anti-Ro, anti-La, anti-Sjögren’s syndrome type A (anti-SSA), and anti-Sjögren’s syndrome type B antibodies, Dr. Gottenberg said.

Thus, one approach to reducing the disease burden is to try to lower circulating immunoglobulin G (IgG) levels and IgG-associated autoantibodies, which is how the monoclonal antibody nipocalimab works. Nipocalimab essentially blocks the interaction of IgG with the neonatal fragment crystallizable receptor and has already been shown to have efficacy in other autoimmune conditions such as myasthenia gravis and fetal and neonatal hemolytic disease, although not as hoped in rheumatoid arthritis.
 

The DAHLIAS Phase 2 Study

Now, results from the DAHLIAS study show that nipocalimab may also work in Sjögren disease, with significant improvement vs placebo seen in the primary endpoint of the total EULAR Sjögren’s Syndrome Disease Activity Index (clinESSDAI) at 24 weeks for one of the two doses of the drug that were tested.

The multicenter, placebo-controlled, double-blind study was conducted in 163 patients with moderate to severely active primary Sjögren disease. The latter was determined by having a clinESSDAI of 6 or higher and seropositivity for anti-Ro60, anti-Ro52, or both autoantibodies.

Dr. Gottenberg reported that the mean age of patients was 48 years; the majority (92.6%) were women and of White ethnicity (90.8%). The baseline clinESSDAI was a mean of 9.9; 98.1% had anti-Ro60, 80.6% had anti-Ro52, and 71.9% had anti-La antibodies.

In addition to standard of care, patients were randomly allocated to receive intravenous treatment every 2 weeks with nipocalimab 5 mg/kg or 15 mg/kg, or placebo.

At 24 weeks, the least squares mean (LSM) change in clinESSDAI from baseline was −3.74 for placebo, −4.08 for nipocalimab 5 mg/kg (P = not significant vs placebo), and −6.40 for nipocalimab 15 mg/kg (P = .02 vs placebo).

Nipocalimab 15 mg/kg also “demonstrated similar and consistent trends in other key efficacy endpoints,” Dr. Gottenberg said. This included improvements in the ESSDAI and EULAR Sjögren’s Syndrome Patient Reported Index (ESSPRI) and composite measures such as the Sjögren’s Tool for Assessing Response (STAR), Composite of Relevant Endpoints for Sjögren’s Syndrome (CRESS), and the Disease Activity Level. There were also improvements in the unstimulated salivary flow rate.

Safety findings showed no new concerns, with adverse events reported in 62.5% of placebo-treated patients and by 79.2% and 79.6% of patients receiving nipocalimab 5 mg/kg and 15 mg/kg, respectively. Serious adverse events were reported in a respective 5.4%, 7.5%, and 7.4%, including severe infections or infections requiring intravenous anti-infectives in 1.8%, 3.8%, and 1.9% of participants, although none was thought to be related to the study treatment. No opportunistic infections or any deaths were reported.

Thomas Schindler, PhD, senior clinical scientist at F. Hoffmann-La Roche Ltd., in Basel, Switzerland, commented from the audience: “This was a very impressive set of results, and I’m very surprised that its safety profile is so benign.”

Dr. Schindler wanted to know if there were any changes in the serum albumin level and if this manifested as any laboratory abnormalities, but there were no reported cases of severe hypoalbuminemia in the study.
 

The TWINSS Phase 2 Study

Similarly hopeful results were reported for iscalimab, a fully human IgG1 anti-CD40 monoclonal antibody that is given by subcutaneous injection, during a clinical abstracts session. Xavier Mariette, MD, PhD, head of the Rheumatology Department at Bicêtre Hospital, Paris-Saclay University in Paris, France, reported updated results of the phase 2b dose-ranging TWINSS study, showing sustained benefits at 48 weeks. The primary endpoint results at 24 weeks were recently published in The Lancet.

TWINSS was set up to assess the safety and efficacy of iscalimab given every 2 weeks vs placebo in two distinct cohorts of patients with Sjögren disease — one with moderate to severe disease with both systemic and symptomatic involvement and the other with low systemic involvement but high symptom burden.

Whereas patients in the first cohort who had moderate to severe disease (n = 173) were randomly allocated to one of three doses (150, 300, and 600 mg) of iscalimab or placebo for the initial 24 weeks, those in the second cohort (n = 100) were randomly allocated to a 600-mg dose or placebo. After the double-blind period ended, patients taking iscalimab continued on the dose they were taking for another 24 weeks, with those in the placebo arms switching to the 600-mg dose in cohort 1 and the 300-mg dose in cohort 2.

Topline results for those in cohort 1 with moderate to severe Sjögren disease were that the significant improvements in ESSDAI that had been seen at week 24 were maintained in those who continued iscalimab and improved in those who had switched from placebo.

LSM change from baseline in ESSDAI vs placebo at week 24 had been −3.0, −1.4, and −2.9 for the 150-, 300-, and 600-mg doses of iscalimab, respectively. Results at week 48 were a respective −7.6, −5.7, and −7.9. The LSM change for the placebo-treated patients who had switched to the 600-mg dose was −6.7.

Dr. Mariette reported “consistent improvement” in patient-reported outcomes, including ESSPRI, the Sjögren’s Syndrome Symptom Diary, Functional Assessment of Chronic Illness Therapy-Fatigue measure, and the Impact of Dry Eye on Everyday Life instrument. There was also a significant improvement in stimulated salivary flow rates.

Similar benefits were seen in the second cohort of patients who did not have systemic involvement but had a high burden of symptoms, with improved ESSPRI scores of a LSM change from baseline vs placebo of −2.29 for patients continuing iscalimab 600 mg treatment and −1.14 for those taking the 300-mg dose after being treated with placebo. Improvements were also seen in the other patient-reported outcomes used.

Regarding safety, Dr. Mariette reported that there were “no specific issues” seen in the patients who switched from placebo to iscalimab, either at the 300-mg or 600-mg dose. Any adverse event occurred in around 80% of placebo-treated patients and roughly 90% of those given iscalimab, and serious adverse events occurred in 11.4%, 14.3%, and 11.4% pf patients treated with iscalimab 150, 300, and 600 mg, and 4.9% of those given placebo and then 600 mg iscalimab.

“The safety seems equivalent to patients having received iscalimab from the beginning of the trial,” Dr. Mariette said, adding “the risk-benefit [analysis] seems positive in patients up to week 48.”
 

Phase 1 Trial of Tibulizumab

Further positive early trial results were reported by Michael Howell, PhD, chief scientific officer for Zura Bio, a biotech company based in Henderson, Nevada. During a poster tour at EULAR 2024, Dr. Howell presented some preliminary findings from a phase 1 trial of tibulizumab, a dual antagonist of interleukin (IL)-17A and the B-cell–activating factor (BAFF) engineered by fusing elements of ixekizumab (Taltz) and tabalumab together.

“The headline result for me is that the molecule does what it’s supposed to,” Dr. Howell told this news organization. “We have potent engagement of the IL-17 and BAFF pathways, and this sets the tone for additional exploration in rheumatologic diseases where there’s known activation of those two pathways,” he said.

Dr. Howell reported that total B-cell counts and lower levels of type 1 T helper cells were seen during the trial.

Over the years, Dr. Howell, an immunologist, has been involved in the development of many therapeutics, such as risankizumab (Skyrizi) and spesolimab (Spevigo).

“When I look at the molecules and the opportunity we have to do broader antagonism of pathways in a safe aspect, this is probably one of the most exciting,” he said.

The trial he presented included 25 people with a confirmed diagnosis of Sjögren disease and anti-SSA or anti-SSB antibodies. Patients received tibulizumab or a placebo for a total of 12 weeks via a subcutaneous injection. Various doses were tested: 30 mg, 100 mg, or 300 mg every 4 weeks, or 300 mg every 2 weeks.

Serum levels of both BAFF and IL-17A increased as expected in the tibulizumab-treated patients, and Dr. Howell reported that “it’s well tolerated. There’s no adverse event profile that caused any concern.”

As a phase 1 study, it was not powered to look at efficacy, but there were positive signals, Dr. Howell said, meaning that the drug is likely to be tested further in a phase 2 trial.
 

Lusvertikimab Phase 2 Trial

During the same poster tour, the null findings of a phase 2 trial of the anti-IL-7 monoclonal antibody lusvertikimab were presented by Benjamin Fisher, MD, professor of rheumatology at Birmingham University in Birmingham, England.

Dr. Fisher told this news organization: “It’s a negative study, at least over the 3-month period that we’ve studied it.” Whether longer durations of treatment may be needed is a question that currently cannot be answered, he added.

A total of 48 patients with Sjögren disease had been included in the trial from 19 different centers in Europe, the United States, and Australia. The mean age of the participants was 53.7 years, 87% were women, and the mean duration of disease was 5.0 years. Baseline ESSDAI and ESSPRI were 12.1 and 7.0, respectively. Half were receiving other background treatment, and 72.9% were anti-Ro or anti-SSA positive.

Lusvertikimab 750 mg or a matching placebo was given via intravenous infusion at weeks 0, 2, 4, 7, and 10.

The primary endpoint was the mean change in ESSDAI from baseline to week 13, which was the same, at −3.9, in both groups. There was also no significant difference between the groups in any of the other secondary endpoints that were used, including ESSPRI, Schirmer’s test, the ocular staining score, salivary flow rate, physician and patient global assessment, assessment of fatigue, quality of life, or the composite measures STAR and CRESS.

“This isn’t going anywhere,” said Dr. Fisher, asking what was going to happen next and if this meant the end of IL-7-focused therapy.

“For years, there’s been quite a lot of interest in this,” Dr. Fisher said. Sjögren disease is characterized by a sort of focal inflammation of the saliva glands, which is composed of both T and B cells in the early stages, probably a T-cell component and a B-cell component, he explained.

“IL-7 is thought to be an important cytokine for homeostasis of the T-cell compartment, so for maintenance of T central memory and effector memory cells,” he said. “So, the idea is that, if you block IL-7, you switch off T cells, and you may rebalance the immune system towards a more regulatory phenotype. Just that it didn’t work,” Dr. Fisher said.

“There’s large unmet need,” he said. “Sjögren’s is associated with poor health-related quality of life, [and] a large part that is symptom-driven — dryness and fatigue — which we have no real interventions yet for patients; there’s no licensed therapeutics for it.”

Dr. Fisher cited ianalumab as one of the front-runners for becoming the first licensed treatment for Sjögren disease. The novel BAFF-targeting antibody is already in phase 3 trials and is also showing promise for the treatment of systemic lupus erythematosus.

“Then there are CD40-targeting drugs; the ones most advanced are dazodalibep and iscalimab.” Commenting on the potential of iscalimab, Dr. Fisher said that it “seems to work — it improves systemic disease activity; it also leads to some symptomatic improvement, which has been difficult to demonstrate in Sjögren’s.”

Dr. Fisher added that “the nipocalimab data looks interesting, as do data on TYK2 inhibition.”

The DAHLIAS study was funded by Janssen Research & Development. Dr. Gottenberg has consulted for AbbVie, Bristol Myers Squibb (BMS), Galapagos, Gilead, Janssen, Lilly, Merck Sharp & Dohme, Novartis, Pfizer, Sanofi, and UCB. The TWINSS study was funded by Novartis. Dr. Mariette has consulted for BMS, Galapagos, GlaxoSmithKline, Novartis, Pfizer, and Servier. The tibulizumab phase 1 study was funded by Eli Lilly & Company. Dr. Howell is an employee of the developer, Zura Bio. The Institut de Recherches Internationales Servier sponsored the lusvertikimab trial. Dr. Fisher has consulted for Novartis, Roche, BMS, Galapagos, Janssen, Servier, UCB, and Sanofi and received funding to his institution for collaborative research from Janssen, Celgene, Galapagos, and Servier.
 

A version of this article first appeared on Medscape.com.

VIENNA — Nipocalimab, iscalimab, and tibulizumab, but not lusvertikimab, appear to be promising new agents for Sjögren disease that warrant further investigation, suggest the results of four separate early clinical trials reported at the recent annual European Congress of Rheumatology (EULAR).

This is potentially good news for patients, as discovering new treatments that work for managing the various symptoms of Sjögren disease is a high priority, Jacques-Eric Gottenberg, MD, PhD, said when he presented the results of the phase 2 DAHLIAS study of nipocalimab during a late-breaking abstract session.

“All patients suffer from high burden of symptoms — pain, fatigue, and dryness; nearly 50% of patients have systemic complications; mortality is increased, so there is a high unmet need since no specific drug has been accepted so far,” said Dr. Gottenberg, who works at Strasbourg University Hospital in Strasbourg, France.

“The pathogenesis of the disease involves high B-cell activation, resulting in high IgG levels, and secretion of autoantibodies,” such as anti-Ro, anti-La, anti-Sjögren’s syndrome type A (anti-SSA), and anti-Sjögren’s syndrome type B antibodies, Dr. Gottenberg said.

Thus, one approach to reducing the disease burden is to try to lower circulating immunoglobulin G (IgG) levels and IgG-associated autoantibodies, which is how the monoclonal antibody nipocalimab works. Nipocalimab essentially blocks the interaction of IgG with the neonatal fragment crystallizable receptor and has already been shown to have efficacy in other autoimmune conditions such as myasthenia gravis and fetal and neonatal hemolytic disease, although not as hoped in rheumatoid arthritis.
 

The DAHLIAS Phase 2 Study

Now, results from the DAHLIAS study show that nipocalimab may also work in Sjögren disease, with significant improvement vs placebo seen in the primary endpoint of the total EULAR Sjögren’s Syndrome Disease Activity Index (clinESSDAI) at 24 weeks for one of the two doses of the drug that were tested.

The multicenter, placebo-controlled, double-blind study was conducted in 163 patients with moderate to severely active primary Sjögren disease. The latter was determined by having a clinESSDAI of 6 or higher and seropositivity for anti-Ro60, anti-Ro52, or both autoantibodies.

Dr. Gottenberg reported that the mean age of patients was 48 years; the majority (92.6%) were women and of White ethnicity (90.8%). The baseline clinESSDAI was a mean of 9.9; 98.1% had anti-Ro60, 80.6% had anti-Ro52, and 71.9% had anti-La antibodies.

In addition to standard of care, patients were randomly allocated to receive intravenous treatment every 2 weeks with nipocalimab 5 mg/kg or 15 mg/kg, or placebo.

At 24 weeks, the least squares mean (LSM) change in clinESSDAI from baseline was −3.74 for placebo, −4.08 for nipocalimab 5 mg/kg (P = not significant vs placebo), and −6.40 for nipocalimab 15 mg/kg (P = .02 vs placebo).

Nipocalimab 15 mg/kg also “demonstrated similar and consistent trends in other key efficacy endpoints,” Dr. Gottenberg said. This included improvements in the ESSDAI and EULAR Sjögren’s Syndrome Patient Reported Index (ESSPRI) and composite measures such as the Sjögren’s Tool for Assessing Response (STAR), Composite of Relevant Endpoints for Sjögren’s Syndrome (CRESS), and the Disease Activity Level. There were also improvements in the unstimulated salivary flow rate.

Safety findings showed no new concerns, with adverse events reported in 62.5% of placebo-treated patients and by 79.2% and 79.6% of patients receiving nipocalimab 5 mg/kg and 15 mg/kg, respectively. Serious adverse events were reported in a respective 5.4%, 7.5%, and 7.4%, including severe infections or infections requiring intravenous anti-infectives in 1.8%, 3.8%, and 1.9% of participants, although none was thought to be related to the study treatment. No opportunistic infections or any deaths were reported.

Thomas Schindler, PhD, senior clinical scientist at F. Hoffmann-La Roche Ltd., in Basel, Switzerland, commented from the audience: “This was a very impressive set of results, and I’m very surprised that its safety profile is so benign.”

Dr. Schindler wanted to know if there were any changes in the serum albumin level and if this manifested as any laboratory abnormalities, but there were no reported cases of severe hypoalbuminemia in the study.
 

The TWINSS Phase 2 Study

Similarly hopeful results were reported for iscalimab, a fully human IgG1 anti-CD40 monoclonal antibody that is given by subcutaneous injection, during a clinical abstracts session. Xavier Mariette, MD, PhD, head of the Rheumatology Department at Bicêtre Hospital, Paris-Saclay University in Paris, France, reported updated results of the phase 2b dose-ranging TWINSS study, showing sustained benefits at 48 weeks. The primary endpoint results at 24 weeks were recently published in The Lancet.

TWINSS was set up to assess the safety and efficacy of iscalimab given every 2 weeks vs placebo in two distinct cohorts of patients with Sjögren disease — one with moderate to severe disease with both systemic and symptomatic involvement and the other with low systemic involvement but high symptom burden.

Whereas patients in the first cohort who had moderate to severe disease (n = 173) were randomly allocated to one of three doses (150, 300, and 600 mg) of iscalimab or placebo for the initial 24 weeks, those in the second cohort (n = 100) were randomly allocated to a 600-mg dose or placebo. After the double-blind period ended, patients taking iscalimab continued on the dose they were taking for another 24 weeks, with those in the placebo arms switching to the 600-mg dose in cohort 1 and the 300-mg dose in cohort 2.

Topline results for those in cohort 1 with moderate to severe Sjögren disease were that the significant improvements in ESSDAI that had been seen at week 24 were maintained in those who continued iscalimab and improved in those who had switched from placebo.

LSM change from baseline in ESSDAI vs placebo at week 24 had been −3.0, −1.4, and −2.9 for the 150-, 300-, and 600-mg doses of iscalimab, respectively. Results at week 48 were a respective −7.6, −5.7, and −7.9. The LSM change for the placebo-treated patients who had switched to the 600-mg dose was −6.7.

Dr. Mariette reported “consistent improvement” in patient-reported outcomes, including ESSPRI, the Sjögren’s Syndrome Symptom Diary, Functional Assessment of Chronic Illness Therapy-Fatigue measure, and the Impact of Dry Eye on Everyday Life instrument. There was also a significant improvement in stimulated salivary flow rates.

Similar benefits were seen in the second cohort of patients who did not have systemic involvement but had a high burden of symptoms, with improved ESSPRI scores of a LSM change from baseline vs placebo of −2.29 for patients continuing iscalimab 600 mg treatment and −1.14 for those taking the 300-mg dose after being treated with placebo. Improvements were also seen in the other patient-reported outcomes used.

Regarding safety, Dr. Mariette reported that there were “no specific issues” seen in the patients who switched from placebo to iscalimab, either at the 300-mg or 600-mg dose. Any adverse event occurred in around 80% of placebo-treated patients and roughly 90% of those given iscalimab, and serious adverse events occurred in 11.4%, 14.3%, and 11.4% pf patients treated with iscalimab 150, 300, and 600 mg, and 4.9% of those given placebo and then 600 mg iscalimab.

“The safety seems equivalent to patients having received iscalimab from the beginning of the trial,” Dr. Mariette said, adding “the risk-benefit [analysis] seems positive in patients up to week 48.”
 

Phase 1 Trial of Tibulizumab

Further positive early trial results were reported by Michael Howell, PhD, chief scientific officer for Zura Bio, a biotech company based in Henderson, Nevada. During a poster tour at EULAR 2024, Dr. Howell presented some preliminary findings from a phase 1 trial of tibulizumab, a dual antagonist of interleukin (IL)-17A and the B-cell–activating factor (BAFF) engineered by fusing elements of ixekizumab (Taltz) and tabalumab together.

“The headline result for me is that the molecule does what it’s supposed to,” Dr. Howell told this news organization. “We have potent engagement of the IL-17 and BAFF pathways, and this sets the tone for additional exploration in rheumatologic diseases where there’s known activation of those two pathways,” he said.

Dr. Howell reported that total B-cell counts and lower levels of type 1 T helper cells were seen during the trial.

Over the years, Dr. Howell, an immunologist, has been involved in the development of many therapeutics, such as risankizumab (Skyrizi) and spesolimab (Spevigo).

“When I look at the molecules and the opportunity we have to do broader antagonism of pathways in a safe aspect, this is probably one of the most exciting,” he said.

The trial he presented included 25 people with a confirmed diagnosis of Sjögren disease and anti-SSA or anti-SSB antibodies. Patients received tibulizumab or a placebo for a total of 12 weeks via a subcutaneous injection. Various doses were tested: 30 mg, 100 mg, or 300 mg every 4 weeks, or 300 mg every 2 weeks.

Serum levels of both BAFF and IL-17A increased as expected in the tibulizumab-treated patients, and Dr. Howell reported that “it’s well tolerated. There’s no adverse event profile that caused any concern.”

As a phase 1 study, it was not powered to look at efficacy, but there were positive signals, Dr. Howell said, meaning that the drug is likely to be tested further in a phase 2 trial.
 

Lusvertikimab Phase 2 Trial

During the same poster tour, the null findings of a phase 2 trial of the anti-IL-7 monoclonal antibody lusvertikimab were presented by Benjamin Fisher, MD, professor of rheumatology at Birmingham University in Birmingham, England.

Dr. Fisher told this news organization: “It’s a negative study, at least over the 3-month period that we’ve studied it.” Whether longer durations of treatment may be needed is a question that currently cannot be answered, he added.

A total of 48 patients with Sjögren disease had been included in the trial from 19 different centers in Europe, the United States, and Australia. The mean age of the participants was 53.7 years, 87% were women, and the mean duration of disease was 5.0 years. Baseline ESSDAI and ESSPRI were 12.1 and 7.0, respectively. Half were receiving other background treatment, and 72.9% were anti-Ro or anti-SSA positive.

Lusvertikimab 750 mg or a matching placebo was given via intravenous infusion at weeks 0, 2, 4, 7, and 10.

The primary endpoint was the mean change in ESSDAI from baseline to week 13, which was the same, at −3.9, in both groups. There was also no significant difference between the groups in any of the other secondary endpoints that were used, including ESSPRI, Schirmer’s test, the ocular staining score, salivary flow rate, physician and patient global assessment, assessment of fatigue, quality of life, or the composite measures STAR and CRESS.

“This isn’t going anywhere,” said Dr. Fisher, asking what was going to happen next and if this meant the end of IL-7-focused therapy.

“For years, there’s been quite a lot of interest in this,” Dr. Fisher said. Sjögren disease is characterized by a sort of focal inflammation of the saliva glands, which is composed of both T and B cells in the early stages, probably a T-cell component and a B-cell component, he explained.

“IL-7 is thought to be an important cytokine for homeostasis of the T-cell compartment, so for maintenance of T central memory and effector memory cells,” he said. “So, the idea is that, if you block IL-7, you switch off T cells, and you may rebalance the immune system towards a more regulatory phenotype. Just that it didn’t work,” Dr. Fisher said.

“There’s large unmet need,” he said. “Sjögren’s is associated with poor health-related quality of life, [and] a large part that is symptom-driven — dryness and fatigue — which we have no real interventions yet for patients; there’s no licensed therapeutics for it.”

Dr. Fisher cited ianalumab as one of the front-runners for becoming the first licensed treatment for Sjögren disease. The novel BAFF-targeting antibody is already in phase 3 trials and is also showing promise for the treatment of systemic lupus erythematosus.

“Then there are CD40-targeting drugs; the ones most advanced are dazodalibep and iscalimab.” Commenting on the potential of iscalimab, Dr. Fisher said that it “seems to work — it improves systemic disease activity; it also leads to some symptomatic improvement, which has been difficult to demonstrate in Sjögren’s.”

Dr. Fisher added that “the nipocalimab data looks interesting, as do data on TYK2 inhibition.”

The DAHLIAS study was funded by Janssen Research & Development. Dr. Gottenberg has consulted for AbbVie, Bristol Myers Squibb (BMS), Galapagos, Gilead, Janssen, Lilly, Merck Sharp & Dohme, Novartis, Pfizer, Sanofi, and UCB. The TWINSS study was funded by Novartis. Dr. Mariette has consulted for BMS, Galapagos, GlaxoSmithKline, Novartis, Pfizer, and Servier. The tibulizumab phase 1 study was funded by Eli Lilly & Company. Dr. Howell is an employee of the developer, Zura Bio. The Institut de Recherches Internationales Servier sponsored the lusvertikimab trial. Dr. Fisher has consulted for Novartis, Roche, BMS, Galapagos, Janssen, Servier, UCB, and Sanofi and received funding to his institution for collaborative research from Janssen, Celgene, Galapagos, and Servier.
 

A version of this article first appeared on Medscape.com.

VIENNA — It may have been a while since there have been any major breakthroughs in the treatment of systemic lupus erythematosus (SLE), but there are high hopes that this is a situation that may be about to change, experts agreed at the annual European Congress of Rheumatology.

“It’s an incredibly vivid area of development,” Laurent Arnaud, MD, PhD, professor of rheumatology at the University of Strasbourg in Strasbourg, France, said during one of the first sessions of the meeting. He reported that there were at least 17 phase 2 and 14 phase 3 trials that were expected to start within the next few years, all with investigational agents that target different immune cells or pathways that have been implicated in the pathogenesis of SLE.

Sara Freeman/Medscape Medical News

In a systematic review published last year, Dr. Arnaud and coauthors found that there were 92 investigational biologic or novel targeted agents in various phases of clinical testing. This included B-cell–targeting agents such as ianalumab, plasma cell-targeting agents such as daratumumab, and drugs with novel mechanisms of action such as KPG-818, which targets the CRL4-Cereblon (CRBN) E3 ubiquitin ligase complex. Phase 2 data on all three of these investigational agents were presented during various sessions at EULAR 2024, all with positive results, suggesting that their further development in SLE is worth pursuing.

There are of course “many more candidates in the pipeline,” Dr. Arnaud said. “I’m very happy that I think we are going to see great days for lupus right in front of our eyes.”
 

Targeting B Cells

Drugs that target B cells have been at the forefront of lupus treatment for several years, as David Isenberg, MD, professor of rheumatology at University College London, pointed out during an interview for EULAR TV.

“It’s clearly important to target the cells which are likely to be causing the problem in lupus, and in the main, that tends to be B cells,” he said.

Dr. Isenberg, who is renowned for his work with the B-cell–targeting agent rituximab, added: “But we know that obviously T cells integrate with B cells, so anything which interrupts the link between the T cell and the B cell is likely to be important.”
 

Chimeric Antigen Receptor (CAR) T-Cell Therapy ‘Revolution’

One new way of targeting B cells is with CAR T-cell therapy, which David D’Cruz , MD, PhD, a consultant rheumatologist for Guy’s and St. Thomas’ Hospital NHS Foundation Trust in London, picked as one of the “most striking” topics highlighted at EULAR 2024.

This is “truly personalized medicine,” Dr. D’Cruz said. This is an autologous therapy because a patient’s T cells are removed by leukapheresis, transfected with a CAR T vector directed against a component of the B cell, and then returned to them.

“I do feel that we’re on the cusp of a major revolution,” Dr. D’Cruz told this news organization. Not only in lupus but also in other rheumatic conditions that have proved really difficult to treat, such as systemic sclerosis and myositis, he said.

“Basically, it’s a very powerful B-cell–depleting tool, but it’s much more profound B-cell–depleting tool than, for example, rituximab or belimumab,” explained Dr. D’Cruz. “What you’re doing is reprogramming T cells to attack the B cells.”

Although rituximab and belimumab clear all the B cells in the circulation, there are still some cells left behind in the bone marrow, “and it’s very difficult to get rid of those,” Dr. D’Cruz said. “What CAR T-cell therapy appears to do is wipe out all the CD19-positive B cells everywhere, in the blood and the tissue. So you get a really profound B-cell depletion.”

Eric Morand, MBBS, PhD, head of rheumatology at Monash Health in Melbourne, Australia, told this news organization that there was obviously “a lot of buzz” about CAR T-cell therapy.

Sara Freeman/Medscape Medical News

“We’re waiting to see if the exciting data from Erlangen can be reproduced in other centers with other CAR T products to show that it is a universal effect. We haven’t seen that yet, but I think we will by next year.”

Cost and expertise are two major considerations and potential limiting factors, however, as Dr. D’Cruz and Dr. Isenberg both pointed out in separate interviews with this news organization.

Dr. D’Cruz said: “It’s very expensive, it takes a while, and it doesn’t always work is what I’m hearing. It’s usually successful, but again, a little bit depends on the technique and the people doing the process.”

Dr. Isenberg said: “CAR T-cell therapy is, I think, very exciting because it does look to be quite promising. But as it costs 350,000 euros per patient, I don’t think that it is going to be widely adopted.”

Even if it could be afforded by certain centers in the West, he added, this just would not be feasible in poorer nations. “So, we’ve got to find other effective, cheaper ways to go,” Dr. Isenberg said.

“I think there are some very interesting ideas with monoclonal antibodies which target at least two different targets — one on the B cell, one on the T cell — and that could well be the way to take this forward,” he suggested.
 

Ianalumab ‘Double Blocking’ B Cells

Another way could be to develop more potent B-cell–depleting drugs, as Nancy Agmon-Levin , MD, head of the Clinical Immunology, Angioedema and Allergy Unit, Lupus and Autoimmune Diseases Clinic, at Sheba Medical Center, Tel Aviv University in Tel Aviv, Israel, reported during one of the clinical abstract sessions at EULAR 2024.

Dr. Agmon-Levin presented data on 67 individuals with SLE who had participated in a multicenter phase 2 study of ianalumab, a fully human immunoglobulin (Ig) G1 monoclonal antibody that results in a “double blocking of the B-cell lineage.”

Ianalumab targets the B-cell–activating factor receptor (BAFFR), but what makes it distinct from other BAFF-targeting drugs is that it has had a fructose molecule removed from its Fc portion, which renders it more likely to trigger antibody-dependent cellular cytotoxicity.

“This is a B-cell depletion therapy,” Agmon-Levin said, but it also blocks BAFFR-mediated survival of B cells, so the subsequent recuperation process of BAFFR-expressing B cells is affected, leading to continued B-cell depletion.

The phase 2 study she presented consisted of an initial 28-week, double-blind period, during which time participants had been randomly allocated to receive either subcutaneous injections of ianalumab 300 mg or a matching placebo every 4 weeks. This was followed by a 24-week, open-label period where all participants were treated with ianalumab, and then an off-treatment, minimal follow-up period that lasted up to 68 weeks, with continued data collection for safety.

The primary outcome measure was a composite of meeting criteria for the SLE Responder Index 4 and a sustained reduction in corticosteroid use at 28 weeks. This was achieved in 15 of the 34 (44.1%) people treated with ianalumab vs only 3 (9.1%) of the 33 people who had been given a placebo.

Dr. Agmon-Levin reported that the effect on this outcome was sustained to the end of the open-label period, at 1 year, in 15 (45.5%) of 33 participants who had continued treatment with ianalumab and achieved in 13 (40.6%) of 32 participants who had switched from placebo to ianalumab treatment.

Moreover, longer durations of treatment were associated with a host of improved outcomes, Dr. Agmon-Levin said: “Treatment was improved along the 52 weeks, and we can see from the LLDAS [Lupus Low Disease Activity State], DORIS [Definition Of Remission In SLE], and SRI-6 and -8 that as you continue the therapy, you improve the outcomes.”

The potential benefits of ianalumab in the treatment of SLE and lupus nephritis will now be further examined in the phase 3 SIRIUS-SLE1 , SIRIUS-SLE2, and SIRIUS-LN trials, which are estimated to provide initial results in 2027 and complete in early 2029 or 2030.
 

Targeting Plasma Cells With Daratumumab

Another drug showing signs that it might be useful as a treatment for SLE is daratumumab, as Tobias Alexander, MD, of Charité — Universitätsmedizin Berlin, reported during one of the late-breaking abstract sessions at EULAR 2024.

“Daratumumab is a human, first-in-class anti-CD38 antibody that efficiently depletes plasma cells,” Dr. Alexander said. CD38 is both a receptor and an enzyme, and while it is found on the surface of most immune cells, it’s particularly expressed by plasma cells, he added.

Daratumumab is not a total newcomer, however, as it’s already approved for the treatment of multiple myeloma under the trade name Darzalex. The rationale for using it in SLE comes from two case reports, Dr. Alexander explained. The first, published in 2020 in The New England Journal of Medicine, involved two patients with severe and life-threatening lupus who were given off-label treatment for a period of 4 weeks and experienced good clinical and serologic responses. The second, published last year in Nature Medicine, involved six patients with refractory lupus nephritis, five of whom had a clinical response at 6 months.

“On this background, we conducted an investigator-initiated trial, which was an open-label, single-center, proof-of-concept study,” Dr. Alexander said. A total of 10 female patients whose ages ranged from 24 to 43 years were included in the phase 2 trial that was dubbed DARALUP. For inclusion, all had to have a Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K) of four or more for clinical manifestations, have been treated with at least two prior disease-modifying drugs to no avail, and be anti–double-stranded DNA (anti-dsDNA) antibody positive. Dr. Alexander reported that the median baseline SLEDAI-2K score was 12 and ranged from 8 to 20, with the number of prior therapies ranging from two to nine.

Daratumumab was given at a dose of 1800 mg via subcutaneous injection every week for 8 weeks. This is the same dose that is used to treat multiple myeloma, Dr. Alexander explained, although the dosing is not stopped. The reason for stopping after 8 weeks in the current trial was to be able to see what happened once the treatment was stopped. The follow-up was for 36 weeks.

Dr. Alexander reported that there was a “very dramatic and significant” effect on the primary endpoint of a reduction in anti-dsDNA antibody levels, decreasing from a median of 166.3 U/mL at baseline to 61.1 U/mL at week 12 (P = .002). Alongside, there was a reduction in the SLEDAI-2K score from 12 to 4 within 12 weeks, which was sustained at the 36-week follow-up assessment. Improvements in skin, joint, kidney, and level of proteinuria were also seen.

Although all patients experienced adverse events, none were serious. Infections and infestations (mostly nasopharyngitis, COVID-19, and gastroenteritis) were the most common, experienced by 80% of the participants; 70% had injection site reactions or fatigue, 60% had gastrointestinal symptoms, 50% had a fall of IgG < 5 g/L, 40% had headache, and 20% had back pain.

“This is a positive trial. I think we could demonstrate that [daratumumab] produced very strong, rapid, and durable clinical improvements,” Dr. Alexander said. “We think that targeting CD38 is relevant; plasma cells had been depleted based on the reduction of anti-dsDNA antibodies,” he added.

From the audience, however, Peter Nash, MBBS, of Griffith University in Brisbane, Australia, questioned whether the results could be attributed to “a steroid effect” because patients had been treated with oral dexamethasone throughout the study.

Dr. Alexander noted that steroid use had been part of the treatment schedule but acknowledged it was a possible confounder.

“I think we can be confident that [daratumumab] had a major effect on plasma cells decreasing…because we see that also the vaccine titers decreased,” Dr. Alexander said. “Time will tell, but even more important is the durability of the responses over time, which you don’t achieve under steroids.”
 

KPG-818’s Novel Mechanism of Action

Elsewhere at EULAR 2024, positive results of another phase 2 study involving a drug with an entirely different mechanism of action, KPG-818, were reported in a poster presentation. KPG-818 modulates CRBN, which results in the degradation of two transcription factors (Aiolos and Ikaros) that are involved in the development, maturation, and proliferation of innate and adaptive immune cells and have been linked to genetic risk in SLE, according to the poster’s authors. It is currently in development for the treatment of SLE, Behçet disease, inflammatory bowel disease, multiple myeloma, and non-Hodgkin lymphoma.

Yao Wang, MD, chief medical officer of KPG-818’s developer Kangpu Biopharmaceuticals, Hefei, China, and associates found that oral doses of 0.15 or 0.6 mg KPG-818 were “generally well-tolerated” and produced immunomodulatory changes that could be beneficial in people with SLE over a 12-week treatment period.

“Only two new agents have been approved for the treatment of SLE in the past five decades in USA and Europe,” Dr. Wang and team wrote, which highlights “a significant unmet need for more effective and safe treatment options.”

They believe that KPG-818 might well fit the bill based on the results of their study, in which 35 of 37 recruited patients completed the treatment. Compared with placebo, they observed reduced numbers of total B cells, Aiolos+ T and B cells, and increased Treg cells.

SLEDAI-2K and Cutaneous Lupus Erythematosus Disease Area and Severity Index activity scores in the 0.15-mg group were improved relative to baseline and placebo.

“The proof-of-concept findings suggest a favorable benefit/risk ratio in SLE for KPG-818,” Dr. Wang and coauthors said, supporting its further development in SLE.
 

Need for Treatments

Dr. Isenberg told this news organization that both daratumumab and KPG-818 would be welcome additions as treatment options if further trials proved their worth.

“The great frustration about lupus is that, compared to patients with rheumatoid arthritis, the choice has been so limited,” Dr. Isenberg said. Aside from rituximab (Rituxan) and belimumab (Benlysta), which are used with certain restrictions, there are no other biologic targeted treatments available in the United Kingdom. Anifrolumab (Saphnelo) has a license in the United States and some European countries but is not yet available for him to use in his practice.

Daratumumab and KPG-818 are “different types of molecules, and if they work that will be great. It would be nice to have the choice,” Dr. Isenberg said. “Whether they will be as effective as I think rituximab is, I don’t know, but these are some very encouraging results.”

Of course, these are all phase 2 trials, and the “big problem” is that such positive results do not always translate when it comes to phase 3, as Dr. D’Cruz told this news organization.

“Until a few years ago, there had been about 25 or 30 industry-led trails, and they’d all failed, except for belimumab and anifrolumab,” Dr. D’Cruz said. These drugs were found to work and be generally safe in phase 1 and 2 trials, but “when they come to phase 3, they all seem to fail, and we don’t know why.”

These are large global studies, D’Cruz added, observing that problems with patient selection, steroid use, and choice of outcome measures were possible factors for why the EXPLORER and LUNAR studies had shown no benefit for rituximab despite the drug being widely used to treat SLE.

Dr. Isenberg, who has coauthored an article on the topic of why drugs seem to fail at the final hurdle, noted: “I think it has a lot to do with the nature of the disease. It’s a complicated disease.” From having “savvy physicians doing the trials for you” to the placebo response, there are “a whole bunch or reasons why these things haven’t worked in lupus.”

Dr. Morand commented: “We’ve got many programs in phase 2 and 3, and because there’s so many, they’re all facing recruitment challenges, and as a consequence of so much activity, every program is going a little slower than hoped for.”

As for other drugs on the horizon, Dr. Morand noted: “We’re very optimistic about things like litifilimab and deucravacitinib; that’s two examples that are in phase 3. Earlier in the program of development, [there are] a huge range of targets being addressed. The future looks bright. But we might have to wait a while.”

Dr. Arnaud has consulted for AstraZeneca, AbbVie, Alpine Immune Sciences, Biogen, Bristol Myers Squibb, Boehringer Ingelheim, Chugai Pharmaceutical, GlaxoSmithKline, Grifols, Janssen, Kezar Life Sciences, LFB, Lilly, Medac, Merck, Novartis, Pfizer, Roche, and UCB. Dr. Isenberg has served as an adviser to Merck Serono, AstraZeneca, Eli Lilly, Servier, and ImmuPharma. Any honoraria received is passed on to a local arthritis charity connected to his hospital. Dr. D’Cruz has served as a consultant and advisory board member for GlaxoSmithKline and CSL Vifor. Dr. Morand has received research support, consultancy fees, or both from multiple pharmaceutical companies paid to his institution including AbbVie, Amgen, AstraZeneca, Biogen, Bristol Myers Squibb, Eli Lilly, EMD Serono, Dragonfly, Genentech, GlaxoSmithKline, Janssen, Novartis, RemeGen, Takeda, UCB, and Zenas. The ianalumab trial presented by Dr. Agmon-Levin was sponsored by Novartis Pharma; however, she reported having no conflicts of interest. The DARALUP study was an investigator-initiated trial supported by Janssen. Dr. Alexander has received consulting fees, study support, honoraria, and travel grants from various pharmaceutical companies including AbbVie, Amgen, AstraZeneca, Bayer, GlaxoSmithKline, Janssen, and Lilly. Dr. Nash has consulted for The Rheumatology Education Group Consultants. The KPG-818 study reported by Dr. Wang was sponsored by Kangpu Biopharmaceuticals.
 

A version of this article first appeared on Medscape.com.

VIENNA — It may have been a while since there have been any major breakthroughs in the treatment of systemic lupus erythematosus (SLE), but there are high hopes that this is a situation that may be about to change, experts agreed at the annual European Congress of Rheumatology.

“It’s an incredibly vivid area of development,” Laurent Arnaud, MD, PhD, professor of rheumatology at the University of Strasbourg in Strasbourg, France, said during one of the first sessions of the meeting. He reported that there were at least 17 phase 2 and 14 phase 3 trials that were expected to start within the next few years, all with investigational agents that target different immune cells or pathways that have been implicated in the pathogenesis of SLE.

Sara Freeman/Medscape Medical News

In a systematic review published last year, Dr. Arnaud and coauthors found that there were 92 investigational biologic or novel targeted agents in various phases of clinical testing. This included B-cell–targeting agents such as ianalumab, plasma cell-targeting agents such as daratumumab, and drugs with novel mechanisms of action such as KPG-818, which targets the CRL4-Cereblon (CRBN) E3 ubiquitin ligase complex. Phase 2 data on all three of these investigational agents were presented during various sessions at EULAR 2024, all with positive results, suggesting that their further development in SLE is worth pursuing.

There are of course “many more candidates in the pipeline,” Dr. Arnaud said. “I’m very happy that I think we are going to see great days for lupus right in front of our eyes.”
 

Targeting B Cells

Drugs that target B cells have been at the forefront of lupus treatment for several years, as David Isenberg, MD, professor of rheumatology at University College London, pointed out during an interview for EULAR TV.

“It’s clearly important to target the cells which are likely to be causing the problem in lupus, and in the main, that tends to be B cells,” he said.

Dr. Isenberg, who is renowned for his work with the B-cell–targeting agent rituximab, added: “But we know that obviously T cells integrate with B cells, so anything which interrupts the link between the T cell and the B cell is likely to be important.”
 

Chimeric Antigen Receptor (CAR) T-Cell Therapy ‘Revolution’

One new way of targeting B cells is with CAR T-cell therapy, which David D’Cruz , MD, PhD, a consultant rheumatologist for Guy’s and St. Thomas’ Hospital NHS Foundation Trust in London, picked as one of the “most striking” topics highlighted at EULAR 2024.

This is “truly personalized medicine,” Dr. D’Cruz said. This is an autologous therapy because a patient’s T cells are removed by leukapheresis, transfected with a CAR T vector directed against a component of the B cell, and then returned to them.

“I do feel that we’re on the cusp of a major revolution,” Dr. D’Cruz told this news organization. Not only in lupus but also in other rheumatic conditions that have proved really difficult to treat, such as systemic sclerosis and myositis, he said.

“Basically, it’s a very powerful B-cell–depleting tool, but it’s much more profound B-cell–depleting tool than, for example, rituximab or belimumab,” explained Dr. D’Cruz. “What you’re doing is reprogramming T cells to attack the B cells.”

Although rituximab and belimumab clear all the B cells in the circulation, there are still some cells left behind in the bone marrow, “and it’s very difficult to get rid of those,” Dr. D’Cruz said. “What CAR T-cell therapy appears to do is wipe out all the CD19-positive B cells everywhere, in the blood and the tissue. So you get a really profound B-cell depletion.”

Eric Morand, MBBS, PhD, head of rheumatology at Monash Health in Melbourne, Australia, told this news organization that there was obviously “a lot of buzz” about CAR T-cell therapy.

Sara Freeman/Medscape Medical News

“We’re waiting to see if the exciting data from Erlangen can be reproduced in other centers with other CAR T products to show that it is a universal effect. We haven’t seen that yet, but I think we will by next year.”

Cost and expertise are two major considerations and potential limiting factors, however, as Dr. D’Cruz and Dr. Isenberg both pointed out in separate interviews with this news organization.

Dr. D’Cruz said: “It’s very expensive, it takes a while, and it doesn’t always work is what I’m hearing. It’s usually successful, but again, a little bit depends on the technique and the people doing the process.”

Dr. Isenberg said: “CAR T-cell therapy is, I think, very exciting because it does look to be quite promising. But as it costs 350,000 euros per patient, I don’t think that it is going to be widely adopted.”

Even if it could be afforded by certain centers in the West, he added, this just would not be feasible in poorer nations. “So, we’ve got to find other effective, cheaper ways to go,” Dr. Isenberg said.

“I think there are some very interesting ideas with monoclonal antibodies which target at least two different targets — one on the B cell, one on the T cell — and that could well be the way to take this forward,” he suggested.
 

Ianalumab ‘Double Blocking’ B Cells

Another way could be to develop more potent B-cell–depleting drugs, as Nancy Agmon-Levin , MD, head of the Clinical Immunology, Angioedema and Allergy Unit, Lupus and Autoimmune Diseases Clinic, at Sheba Medical Center, Tel Aviv University in Tel Aviv, Israel, reported during one of the clinical abstract sessions at EULAR 2024.

Dr. Agmon-Levin presented data on 67 individuals with SLE who had participated in a multicenter phase 2 study of ianalumab, a fully human immunoglobulin (Ig) G1 monoclonal antibody that results in a “double blocking of the B-cell lineage.”

Ianalumab targets the B-cell–activating factor receptor (BAFFR), but what makes it distinct from other BAFF-targeting drugs is that it has had a fructose molecule removed from its Fc portion, which renders it more likely to trigger antibody-dependent cellular cytotoxicity.

“This is a B-cell depletion therapy,” Agmon-Levin said, but it also blocks BAFFR-mediated survival of B cells, so the subsequent recuperation process of BAFFR-expressing B cells is affected, leading to continued B-cell depletion.

The phase 2 study she presented consisted of an initial 28-week, double-blind period, during which time participants had been randomly allocated to receive either subcutaneous injections of ianalumab 300 mg or a matching placebo every 4 weeks. This was followed by a 24-week, open-label period where all participants were treated with ianalumab, and then an off-treatment, minimal follow-up period that lasted up to 68 weeks, with continued data collection for safety.

The primary outcome measure was a composite of meeting criteria for the SLE Responder Index 4 and a sustained reduction in corticosteroid use at 28 weeks. This was achieved in 15 of the 34 (44.1%) people treated with ianalumab vs only 3 (9.1%) of the 33 people who had been given a placebo.

Dr. Agmon-Levin reported that the effect on this outcome was sustained to the end of the open-label period, at 1 year, in 15 (45.5%) of 33 participants who had continued treatment with ianalumab and achieved in 13 (40.6%) of 32 participants who had switched from placebo to ianalumab treatment.

Moreover, longer durations of treatment were associated with a host of improved outcomes, Dr. Agmon-Levin said: “Treatment was improved along the 52 weeks, and we can see from the LLDAS [Lupus Low Disease Activity State], DORIS [Definition Of Remission In SLE], and SRI-6 and -8 that as you continue the therapy, you improve the outcomes.”

The potential benefits of ianalumab in the treatment of SLE and lupus nephritis will now be further examined in the phase 3 SIRIUS-SLE1 , SIRIUS-SLE2, and SIRIUS-LN trials, which are estimated to provide initial results in 2027 and complete in early 2029 or 2030.
 

Targeting Plasma Cells With Daratumumab

Another drug showing signs that it might be useful as a treatment for SLE is daratumumab, as Tobias Alexander, MD, of Charité — Universitätsmedizin Berlin, reported during one of the late-breaking abstract sessions at EULAR 2024.

“Daratumumab is a human, first-in-class anti-CD38 antibody that efficiently depletes plasma cells,” Dr. Alexander said. CD38 is both a receptor and an enzyme, and while it is found on the surface of most immune cells, it’s particularly expressed by plasma cells, he added.

Daratumumab is not a total newcomer, however, as it’s already approved for the treatment of multiple myeloma under the trade name Darzalex. The rationale for using it in SLE comes from two case reports, Dr. Alexander explained. The first, published in 2020 in The New England Journal of Medicine, involved two patients with severe and life-threatening lupus who were given off-label treatment for a period of 4 weeks and experienced good clinical and serologic responses. The second, published last year in Nature Medicine, involved six patients with refractory lupus nephritis, five of whom had a clinical response at 6 months.

“On this background, we conducted an investigator-initiated trial, which was an open-label, single-center, proof-of-concept study,” Dr. Alexander said. A total of 10 female patients whose ages ranged from 24 to 43 years were included in the phase 2 trial that was dubbed DARALUP. For inclusion, all had to have a Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K) of four or more for clinical manifestations, have been treated with at least two prior disease-modifying drugs to no avail, and be anti–double-stranded DNA (anti-dsDNA) antibody positive. Dr. Alexander reported that the median baseline SLEDAI-2K score was 12 and ranged from 8 to 20, with the number of prior therapies ranging from two to nine.

Daratumumab was given at a dose of 1800 mg via subcutaneous injection every week for 8 weeks. This is the same dose that is used to treat multiple myeloma, Dr. Alexander explained, although the dosing is not stopped. The reason for stopping after 8 weeks in the current trial was to be able to see what happened once the treatment was stopped. The follow-up was for 36 weeks.

Dr. Alexander reported that there was a “very dramatic and significant” effect on the primary endpoint of a reduction in anti-dsDNA antibody levels, decreasing from a median of 166.3 U/mL at baseline to 61.1 U/mL at week 12 (P = .002). Alongside, there was a reduction in the SLEDAI-2K score from 12 to 4 within 12 weeks, which was sustained at the 36-week follow-up assessment. Improvements in skin, joint, kidney, and level of proteinuria were also seen.

Although all patients experienced adverse events, none were serious. Infections and infestations (mostly nasopharyngitis, COVID-19, and gastroenteritis) were the most common, experienced by 80% of the participants; 70% had injection site reactions or fatigue, 60% had gastrointestinal symptoms, 50% had a fall of IgG < 5 g/L, 40% had headache, and 20% had back pain.

“This is a positive trial. I think we could demonstrate that [daratumumab] produced very strong, rapid, and durable clinical improvements,” Dr. Alexander said. “We think that targeting CD38 is relevant; plasma cells had been depleted based on the reduction of anti-dsDNA antibodies,” he added.

From the audience, however, Peter Nash, MBBS, of Griffith University in Brisbane, Australia, questioned whether the results could be attributed to “a steroid effect” because patients had been treated with oral dexamethasone throughout the study.

Dr. Alexander noted that steroid use had been part of the treatment schedule but acknowledged it was a possible confounder.

“I think we can be confident that [daratumumab] had a major effect on plasma cells decreasing…because we see that also the vaccine titers decreased,” Dr. Alexander said. “Time will tell, but even more important is the durability of the responses over time, which you don’t achieve under steroids.”
 

KPG-818’s Novel Mechanism of Action

Elsewhere at EULAR 2024, positive results of another phase 2 study involving a drug with an entirely different mechanism of action, KPG-818, were reported in a poster presentation. KPG-818 modulates CRBN, which results in the degradation of two transcription factors (Aiolos and Ikaros) that are involved in the development, maturation, and proliferation of innate and adaptive immune cells and have been linked to genetic risk in SLE, according to the poster’s authors. It is currently in development for the treatment of SLE, Behçet disease, inflammatory bowel disease, multiple myeloma, and non-Hodgkin lymphoma.

Yao Wang, MD, chief medical officer of KPG-818’s developer Kangpu Biopharmaceuticals, Hefei, China, and associates found that oral doses of 0.15 or 0.6 mg KPG-818 were “generally well-tolerated” and produced immunomodulatory changes that could be beneficial in people with SLE over a 12-week treatment period.

“Only two new agents have been approved for the treatment of SLE in the past five decades in USA and Europe,” Dr. Wang and team wrote, which highlights “a significant unmet need for more effective and safe treatment options.”

They believe that KPG-818 might well fit the bill based on the results of their study, in which 35 of 37 recruited patients completed the treatment. Compared with placebo, they observed reduced numbers of total B cells, Aiolos+ T and B cells, and increased Treg cells.

SLEDAI-2K and Cutaneous Lupus Erythematosus Disease Area and Severity Index activity scores in the 0.15-mg group were improved relative to baseline and placebo.

“The proof-of-concept findings suggest a favorable benefit/risk ratio in SLE for KPG-818,” Dr. Wang and coauthors said, supporting its further development in SLE.
 

Need for Treatments

Dr. Isenberg told this news organization that both daratumumab and KPG-818 would be welcome additions as treatment options if further trials proved their worth.

“The great frustration about lupus is that, compared to patients with rheumatoid arthritis, the choice has been so limited,” Dr. Isenberg said. Aside from rituximab (Rituxan) and belimumab (Benlysta), which are used with certain restrictions, there are no other biologic targeted treatments available in the United Kingdom. Anifrolumab (Saphnelo) has a license in the United States and some European countries but is not yet available for him to use in his practice.

Daratumumab and KPG-818 are “different types of molecules, and if they work that will be great. It would be nice to have the choice,” Dr. Isenberg said. “Whether they will be as effective as I think rituximab is, I don’t know, but these are some very encouraging results.”

Of course, these are all phase 2 trials, and the “big problem” is that such positive results do not always translate when it comes to phase 3, as Dr. D’Cruz told this news organization.

“Until a few years ago, there had been about 25 or 30 industry-led trails, and they’d all failed, except for belimumab and anifrolumab,” Dr. D’Cruz said. These drugs were found to work and be generally safe in phase 1 and 2 trials, but “when they come to phase 3, they all seem to fail, and we don’t know why.”

These are large global studies, D’Cruz added, observing that problems with patient selection, steroid use, and choice of outcome measures were possible factors for why the EXPLORER and LUNAR studies had shown no benefit for rituximab despite the drug being widely used to treat SLE.

Dr. Isenberg, who has coauthored an article on the topic of why drugs seem to fail at the final hurdle, noted: “I think it has a lot to do with the nature of the disease. It’s a complicated disease.” From having “savvy physicians doing the trials for you” to the placebo response, there are “a whole bunch or reasons why these things haven’t worked in lupus.”

Dr. Morand commented: “We’ve got many programs in phase 2 and 3, and because there’s so many, they’re all facing recruitment challenges, and as a consequence of so much activity, every program is going a little slower than hoped for.”

As for other drugs on the horizon, Dr. Morand noted: “We’re very optimistic about things like litifilimab and deucravacitinib; that’s two examples that are in phase 3. Earlier in the program of development, [there are] a huge range of targets being addressed. The future looks bright. But we might have to wait a while.”

Dr. Arnaud has consulted for AstraZeneca, AbbVie, Alpine Immune Sciences, Biogen, Bristol Myers Squibb, Boehringer Ingelheim, Chugai Pharmaceutical, GlaxoSmithKline, Grifols, Janssen, Kezar Life Sciences, LFB, Lilly, Medac, Merck, Novartis, Pfizer, Roche, and UCB. Dr. Isenberg has served as an adviser to Merck Serono, AstraZeneca, Eli Lilly, Servier, and ImmuPharma. Any honoraria received is passed on to a local arthritis charity connected to his hospital. Dr. D’Cruz has served as a consultant and advisory board member for GlaxoSmithKline and CSL Vifor. Dr. Morand has received research support, consultancy fees, or both from multiple pharmaceutical companies paid to his institution including AbbVie, Amgen, AstraZeneca, Biogen, Bristol Myers Squibb, Eli Lilly, EMD Serono, Dragonfly, Genentech, GlaxoSmithKline, Janssen, Novartis, RemeGen, Takeda, UCB, and Zenas. The ianalumab trial presented by Dr. Agmon-Levin was sponsored by Novartis Pharma; however, she reported having no conflicts of interest. The DARALUP study was an investigator-initiated trial supported by Janssen. Dr. Alexander has received consulting fees, study support, honoraria, and travel grants from various pharmaceutical companies including AbbVie, Amgen, AstraZeneca, Bayer, GlaxoSmithKline, Janssen, and Lilly. Dr. Nash has consulted for The Rheumatology Education Group Consultants. The KPG-818 study reported by Dr. Wang was sponsored by Kangpu Biopharmaceuticals.
 

A version of this article first appeared on Medscape.com.

VIENNA — It may have been a while since there have been any major breakthroughs in the treatment of systemic lupus erythematosus (SLE), but there are high hopes that this is a situation that may be about to change, experts agreed at the annual European Congress of Rheumatology.

“It’s an incredibly vivid area of development,” Laurent Arnaud, MD, PhD, professor of rheumatology at the University of Strasbourg in Strasbourg, France, said during one of the first sessions of the meeting. He reported that there were at least 17 phase 2 and 14 phase 3 trials that were expected to start within the next few years, all with investigational agents that target different immune cells or pathways that have been implicated in the pathogenesis of SLE.

Sara Freeman/Medscape Medical News

In a systematic review published last year, Dr. Arnaud and coauthors found that there were 92 investigational biologic or novel targeted agents in various phases of clinical testing. This included B-cell–targeting agents such as ianalumab, plasma cell-targeting agents such as daratumumab, and drugs with novel mechanisms of action such as KPG-818, which targets the CRL4-Cereblon (CRBN) E3 ubiquitin ligase complex. Phase 2 data on all three of these investigational agents were presented during various sessions at EULAR 2024, all with positive results, suggesting that their further development in SLE is worth pursuing.

There are of course “many more candidates in the pipeline,” Dr. Arnaud said. “I’m very happy that I think we are going to see great days for lupus right in front of our eyes.”
 

Targeting B Cells

Drugs that target B cells have been at the forefront of lupus treatment for several years, as David Isenberg, MD, professor of rheumatology at University College London, pointed out during an interview for EULAR TV.

“It’s clearly important to target the cells which are likely to be causing the problem in lupus, and in the main, that tends to be B cells,” he said.

Dr. Isenberg, who is renowned for his work with the B-cell–targeting agent rituximab, added: “But we know that obviously T cells integrate with B cells, so anything which interrupts the link between the T cell and the B cell is likely to be important.”
 

Chimeric Antigen Receptor (CAR) T-Cell Therapy ‘Revolution’

One new way of targeting B cells is with CAR T-cell therapy, which David D’Cruz , MD, PhD, a consultant rheumatologist for Guy’s and St. Thomas’ Hospital NHS Foundation Trust in London, picked as one of the “most striking” topics highlighted at EULAR 2024.

This is “truly personalized medicine,” Dr. D’Cruz said. This is an autologous therapy because a patient’s T cells are removed by leukapheresis, transfected with a CAR T vector directed against a component of the B cell, and then returned to them.

“I do feel that we’re on the cusp of a major revolution,” Dr. D’Cruz told this news organization. Not only in lupus but also in other rheumatic conditions that have proved really difficult to treat, such as systemic sclerosis and myositis, he said.

“Basically, it’s a very powerful B-cell–depleting tool, but it’s much more profound B-cell–depleting tool than, for example, rituximab or belimumab,” explained Dr. D’Cruz. “What you’re doing is reprogramming T cells to attack the B cells.”

Although rituximab and belimumab clear all the B cells in the circulation, there are still some cells left behind in the bone marrow, “and it’s very difficult to get rid of those,” Dr. D’Cruz said. “What CAR T-cell therapy appears to do is wipe out all the CD19-positive B cells everywhere, in the blood and the tissue. So you get a really profound B-cell depletion.”

Eric Morand, MBBS, PhD, head of rheumatology at Monash Health in Melbourne, Australia, told this news organization that there was obviously “a lot of buzz” about CAR T-cell therapy.

Sara Freeman/Medscape Medical News

“We’re waiting to see if the exciting data from Erlangen can be reproduced in other centers with other CAR T products to show that it is a universal effect. We haven’t seen that yet, but I think we will by next year.”

Cost and expertise are two major considerations and potential limiting factors, however, as Dr. D’Cruz and Dr. Isenberg both pointed out in separate interviews with this news organization.

Dr. D’Cruz said: “It’s very expensive, it takes a while, and it doesn’t always work is what I’m hearing. It’s usually successful, but again, a little bit depends on the technique and the people doing the process.”

Dr. Isenberg said: “CAR T-cell therapy is, I think, very exciting because it does look to be quite promising. But as it costs 350,000 euros per patient, I don’t think that it is going to be widely adopted.”

Even if it could be afforded by certain centers in the West, he added, this just would not be feasible in poorer nations. “So, we’ve got to find other effective, cheaper ways to go,” Dr. Isenberg said.

“I think there are some very interesting ideas with monoclonal antibodies which target at least two different targets — one on the B cell, one on the T cell — and that could well be the way to take this forward,” he suggested.
 

Ianalumab ‘Double Blocking’ B Cells

Another way could be to develop more potent B-cell–depleting drugs, as Nancy Agmon-Levin , MD, head of the Clinical Immunology, Angioedema and Allergy Unit, Lupus and Autoimmune Diseases Clinic, at Sheba Medical Center, Tel Aviv University in Tel Aviv, Israel, reported during one of the clinical abstract sessions at EULAR 2024.

Dr. Agmon-Levin presented data on 67 individuals with SLE who had participated in a multicenter phase 2 study of ianalumab, a fully human immunoglobulin (Ig) G1 monoclonal antibody that results in a “double blocking of the B-cell lineage.”

Ianalumab targets the B-cell–activating factor receptor (BAFFR), but what makes it distinct from other BAFF-targeting drugs is that it has had a fructose molecule removed from its Fc portion, which renders it more likely to trigger antibody-dependent cellular cytotoxicity.

“This is a B-cell depletion therapy,” Agmon-Levin said, but it also blocks BAFFR-mediated survival of B cells, so the subsequent recuperation process of BAFFR-expressing B cells is affected, leading to continued B-cell depletion.

The phase 2 study she presented consisted of an initial 28-week, double-blind period, during which time participants had been randomly allocated to receive either subcutaneous injections of ianalumab 300 mg or a matching placebo every 4 weeks. This was followed by a 24-week, open-label period where all participants were treated with ianalumab, and then an off-treatment, minimal follow-up period that lasted up to 68 weeks, with continued data collection for safety.

The primary outcome measure was a composite of meeting criteria for the SLE Responder Index 4 and a sustained reduction in corticosteroid use at 28 weeks. This was achieved in 15 of the 34 (44.1%) people treated with ianalumab vs only 3 (9.1%) of the 33 people who had been given a placebo.

Dr. Agmon-Levin reported that the effect on this outcome was sustained to the end of the open-label period, at 1 year, in 15 (45.5%) of 33 participants who had continued treatment with ianalumab and achieved in 13 (40.6%) of 32 participants who had switched from placebo to ianalumab treatment.

Moreover, longer durations of treatment were associated with a host of improved outcomes, Dr. Agmon-Levin said: “Treatment was improved along the 52 weeks, and we can see from the LLDAS [Lupus Low Disease Activity State], DORIS [Definition Of Remission In SLE], and SRI-6 and -8 that as you continue the therapy, you improve the outcomes.”

The potential benefits of ianalumab in the treatment of SLE and lupus nephritis will now be further examined in the phase 3 SIRIUS-SLE1 , SIRIUS-SLE2, and SIRIUS-LN trials, which are estimated to provide initial results in 2027 and complete in early 2029 or 2030.
 

Targeting Plasma Cells With Daratumumab

Another drug showing signs that it might be useful as a treatment for SLE is daratumumab, as Tobias Alexander, MD, of Charité — Universitätsmedizin Berlin, reported during one of the late-breaking abstract sessions at EULAR 2024.

“Daratumumab is a human, first-in-class anti-CD38 antibody that efficiently depletes plasma cells,” Dr. Alexander said. CD38 is both a receptor and an enzyme, and while it is found on the surface of most immune cells, it’s particularly expressed by plasma cells, he added.

Daratumumab is not a total newcomer, however, as it’s already approved for the treatment of multiple myeloma under the trade name Darzalex. The rationale for using it in SLE comes from two case reports, Dr. Alexander explained. The first, published in 2020 in The New England Journal of Medicine, involved two patients with severe and life-threatening lupus who were given off-label treatment for a period of 4 weeks and experienced good clinical and serologic responses. The second, published last year in Nature Medicine, involved six patients with refractory lupus nephritis, five of whom had a clinical response at 6 months.

“On this background, we conducted an investigator-initiated trial, which was an open-label, single-center, proof-of-concept study,” Dr. Alexander said. A total of 10 female patients whose ages ranged from 24 to 43 years were included in the phase 2 trial that was dubbed DARALUP. For inclusion, all had to have a Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K) of four or more for clinical manifestations, have been treated with at least two prior disease-modifying drugs to no avail, and be anti–double-stranded DNA (anti-dsDNA) antibody positive. Dr. Alexander reported that the median baseline SLEDAI-2K score was 12 and ranged from 8 to 20, with the number of prior therapies ranging from two to nine.

Daratumumab was given at a dose of 1800 mg via subcutaneous injection every week for 8 weeks. This is the same dose that is used to treat multiple myeloma, Dr. Alexander explained, although the dosing is not stopped. The reason for stopping after 8 weeks in the current trial was to be able to see what happened once the treatment was stopped. The follow-up was for 36 weeks.

Dr. Alexander reported that there was a “very dramatic and significant” effect on the primary endpoint of a reduction in anti-dsDNA antibody levels, decreasing from a median of 166.3 U/mL at baseline to 61.1 U/mL at week 12 (P = .002). Alongside, there was a reduction in the SLEDAI-2K score from 12 to 4 within 12 weeks, which was sustained at the 36-week follow-up assessment. Improvements in skin, joint, kidney, and level of proteinuria were also seen.

Although all patients experienced adverse events, none were serious. Infections and infestations (mostly nasopharyngitis, COVID-19, and gastroenteritis) were the most common, experienced by 80% of the participants; 70% had injection site reactions or fatigue, 60% had gastrointestinal symptoms, 50% had a fall of IgG < 5 g/L, 40% had headache, and 20% had back pain.

“This is a positive trial. I think we could demonstrate that [daratumumab] produced very strong, rapid, and durable clinical improvements,” Dr. Alexander said. “We think that targeting CD38 is relevant; plasma cells had been depleted based on the reduction of anti-dsDNA antibodies,” he added.

From the audience, however, Peter Nash, MBBS, of Griffith University in Brisbane, Australia, questioned whether the results could be attributed to “a steroid effect” because patients had been treated with oral dexamethasone throughout the study.

Dr. Alexander noted that steroid use had been part of the treatment schedule but acknowledged it was a possible confounder.

“I think we can be confident that [daratumumab] had a major effect on plasma cells decreasing…because we see that also the vaccine titers decreased,” Dr. Alexander said. “Time will tell, but even more important is the durability of the responses over time, which you don’t achieve under steroids.”
 

KPG-818’s Novel Mechanism of Action

Elsewhere at EULAR 2024, positive results of another phase 2 study involving a drug with an entirely different mechanism of action, KPG-818, were reported in a poster presentation. KPG-818 modulates CRBN, which results in the degradation of two transcription factors (Aiolos and Ikaros) that are involved in the development, maturation, and proliferation of innate and adaptive immune cells and have been linked to genetic risk in SLE, according to the poster’s authors. It is currently in development for the treatment of SLE, Behçet disease, inflammatory bowel disease, multiple myeloma, and non-Hodgkin lymphoma.

Yao Wang, MD, chief medical officer of KPG-818’s developer Kangpu Biopharmaceuticals, Hefei, China, and associates found that oral doses of 0.15 or 0.6 mg KPG-818 were “generally well-tolerated” and produced immunomodulatory changes that could be beneficial in people with SLE over a 12-week treatment period.

“Only two new agents have been approved for the treatment of SLE in the past five decades in USA and Europe,” Dr. Wang and team wrote, which highlights “a significant unmet need for more effective and safe treatment options.”

They believe that KPG-818 might well fit the bill based on the results of their study, in which 35 of 37 recruited patients completed the treatment. Compared with placebo, they observed reduced numbers of total B cells, Aiolos+ T and B cells, and increased Treg cells.

SLEDAI-2K and Cutaneous Lupus Erythematosus Disease Area and Severity Index activity scores in the 0.15-mg group were improved relative to baseline and placebo.

“The proof-of-concept findings suggest a favorable benefit/risk ratio in SLE for KPG-818,” Dr. Wang and coauthors said, supporting its further development in SLE.
 

Need for Treatments

Dr. Isenberg told this news organization that both daratumumab and KPG-818 would be welcome additions as treatment options if further trials proved their worth.

“The great frustration about lupus is that, compared to patients with rheumatoid arthritis, the choice has been so limited,” Dr. Isenberg said. Aside from rituximab (Rituxan) and belimumab (Benlysta), which are used with certain restrictions, there are no other biologic targeted treatments available in the United Kingdom. Anifrolumab (Saphnelo) has a license in the United States and some European countries but is not yet available for him to use in his practice.

Daratumumab and KPG-818 are “different types of molecules, and if they work that will be great. It would be nice to have the choice,” Dr. Isenberg said. “Whether they will be as effective as I think rituximab is, I don’t know, but these are some very encouraging results.”

Of course, these are all phase 2 trials, and the “big problem” is that such positive results do not always translate when it comes to phase 3, as Dr. D’Cruz told this news organization.

“Until a few years ago, there had been about 25 or 30 industry-led trails, and they’d all failed, except for belimumab and anifrolumab,” Dr. D’Cruz said. These drugs were found to work and be generally safe in phase 1 and 2 trials, but “when they come to phase 3, they all seem to fail, and we don’t know why.”

These are large global studies, D’Cruz added, observing that problems with patient selection, steroid use, and choice of outcome measures were possible factors for why the EXPLORER and LUNAR studies had shown no benefit for rituximab despite the drug being widely used to treat SLE.

Dr. Isenberg, who has coauthored an article on the topic of why drugs seem to fail at the final hurdle, noted: “I think it has a lot to do with the nature of the disease. It’s a complicated disease.” From having “savvy physicians doing the trials for you” to the placebo response, there are “a whole bunch or reasons why these things haven’t worked in lupus.”

Dr. Morand commented: “We’ve got many programs in phase 2 and 3, and because there’s so many, they’re all facing recruitment challenges, and as a consequence of so much activity, every program is going a little slower than hoped for.”

As for other drugs on the horizon, Dr. Morand noted: “We’re very optimistic about things like litifilimab and deucravacitinib; that’s two examples that are in phase 3. Earlier in the program of development, [there are] a huge range of targets being addressed. The future looks bright. But we might have to wait a while.”

Dr. Arnaud has consulted for AstraZeneca, AbbVie, Alpine Immune Sciences, Biogen, Bristol Myers Squibb, Boehringer Ingelheim, Chugai Pharmaceutical, GlaxoSmithKline, Grifols, Janssen, Kezar Life Sciences, LFB, Lilly, Medac, Merck, Novartis, Pfizer, Roche, and UCB. Dr. Isenberg has served as an adviser to Merck Serono, AstraZeneca, Eli Lilly, Servier, and ImmuPharma. Any honoraria received is passed on to a local arthritis charity connected to his hospital. Dr. D’Cruz has served as a consultant and advisory board member for GlaxoSmithKline and CSL Vifor. Dr. Morand has received research support, consultancy fees, or both from multiple pharmaceutical companies paid to his institution including AbbVie, Amgen, AstraZeneca, Biogen, Bristol Myers Squibb, Eli Lilly, EMD Serono, Dragonfly, Genentech, GlaxoSmithKline, Janssen, Novartis, RemeGen, Takeda, UCB, and Zenas. The ianalumab trial presented by Dr. Agmon-Levin was sponsored by Novartis Pharma; however, she reported having no conflicts of interest. The DARALUP study was an investigator-initiated trial supported by Janssen. Dr. Alexander has received consulting fees, study support, honoraria, and travel grants from various pharmaceutical companies including AbbVie, Amgen, AstraZeneca, Bayer, GlaxoSmithKline, Janssen, and Lilly. Dr. Nash has consulted for The Rheumatology Education Group Consultants. The KPG-818 study reported by Dr. Wang was sponsored by Kangpu Biopharmaceuticals.
 

A version of this article first appeared on Medscape.com.

Now, 75 years after the first presentations were made on the “sensational” effects of cortisone in the treatment of rheumatoid arthritis (RA), glucocorticoids (GCs) are still highly relevant and widely used in the management of RA and other immune-mediated inflammatory diseases.

“It makes me smile because this is such an old drug, and we need it still so much. It still hasn’t been replaced,” Josef S. Smolen, MD, observed at annual European Congress of Rheumatology.

At low doses, GCs are highly effective as anti-inflammatory and anti-destructive agents in RA and many other diseases, said Dr. Smolen, a rheumatologist and immunologist and professor emeritus at the Medical University of Vienna, Austria.

But even after all this time, the mechanisms that lead to efficacy vs toxicity have yet to be clarified. “Such separation may provide further insights into future treatment options,” said Dr. Smolen.

Sara Freeman/MDedge News

Societies Agree: Discontinue as Fast as Possible

GCs have been associated with a long list of adverse events, most notably Cushing syndrome, hypertension, cardiovascular disease, osteoporosis, myopathy, peptic ulcer, adrenal insufficiency (AI), infections, mood disorders, ophthalmologic disorders such as cataracts, skin disorders, menstrual septic necrosis, and pancreatitis.

Dose matters, Dr. Smolen said, citing studies that found that cumulative GC doses of 1000 or 1100 mg increase risks. One study by German researchers found that doses above 10 mg/d significantly raised the hazard ratio for death.

Because high disease activity is also associated with an equally high mortality risk, “we have to balance this out: Active disease vs glucocorticoid use, especially in countries that have less access to modern therapies than we have in the more affluent Western regions,” Dr. Smolen said.

Rheumatology societies generally agree that clinicians should try to minimize GC use or eventually discontinue the therapy.

The American College of Rheumatology recommends not using GCs as part of the first-line treatment of RA. “And if you want to use [them], you should do that for less than 3 months, taper and discontinue as fast as possible, and use the lowest dose possible,” Dr. Adami said.

EULAR’s recommendation is more nuanced in that it allows for a lower dose but gives physicians more choice in how they want to handle GCs, Dr. Adami said. The task force added that all patients should try to taper down or discontinue as fast as possible, he said.

For GCs in the management of systemic lupus erythematosus, a EULAR task force recommended that the type and severity of organ involvement should determine dose, with a long-term goal of maintaining the dose < 5 mg/d or possibly withdrawing it.

EULAR also recommends GC bridging when initiating or changing conventional synthetic (cs) DMARDs. This effectively dismisses the use of GCs when using biologic DMARDs or targeted synthetic DMARDs. As a bridging therapy, EULAR recommends either a single parenteral dose of GC or a predefined tapering or discontinuation scheme within 3 months, when starting an oral GC.
 

Low-Dose Approach Gains Ground

While saying he’d be the first physician to eliminate GCs whenever possible, Dr. Buttgereit made the case before the EULAR Congress that GCs in low doses could still play a role in treatment.

Many physicians believe that very low doses between 2 and 4 mg/d are a realistic therapy option for RA, he said, adding that a mean daily usage < 5 mg could be used over a longer period with relatively low risk.

Several studies he coauthored tested the 5-mg approach. The GLORIA trial compared 5 mg/d prednisolone and placebo in 451 patients aged 65 years and older with active RA over the course of 2 years. The researchers found that patients on prednisolone had a mean Disease Activity Score in 28 joints (DAS28) that was 0.37 points lower and mean joint damage score that was 1.7 points lower than those of patients on placebo, suggesting that the GC had long-term benefits in these patients with RA.

The tradeoff was a 24% increase in the risk of having at least one adverse event of special interest, but most of these events were non-severe infections, Dr. Buttgereit said.

Another study, the SEMIRA trial, assigned 128 patients to a continued regimen of prednisone 5 mg/d for 24 weeks. Another group of 131 patients received a tapered-prednisone regimen. All patients received tocilizumab 162 mg with or without csDMARDs, maintained at stable doses.

Patients in the first cohort achieved superior disease activity control than those in the tapered regimen group. “The side effects showed that in the tapering prednisone group, there were more treatment-emergent adverse effects in this double-blind trial as compared to the continued prednisone group,” Dr. Buttgereit said.

One limitation of the SEMIRA trial was that it studied the effect of tocilizumab as a GC-sparing agent, and it didn’t consider using a tumor necrosis factor or Janus kinase (JAK) inhibitor, which might have a more potent effect on pain and GC dose reduction, Dr. Adami said. “Why do we need to use glucocorticoids if we know they might be detrimental, if we know there might be some other option in our armamentarium?”

Other studies have shown that low-dose GC protocols can be used with standard treatment, according to Sebastian E. Sattui, MD, assistant professor of medicine and director of the Vasculitis Center at the University of Pittsburgh School of Medicine.

“Examples of this are the LoVAS and PEXIVAS studies for antineutrophil cytoplasmic antibody-associated [ANCA] vasculitis. This has been highlighted in existing treatment recommendations for ANCA vasculitis and systemic lupus erythematosus nephritis,” Dr. Sattui said.

Debating the Toxicity Threshold

Are low GC dosages significantly associated with adverse events like mortality, cardiovascular, or diabetes risk? It depends on who you ask.

Much of the toxicity data on GCs come from inadequately powered or controlled studies and often refer to doses that currently are considered too high, Dr. Buttgereit said. His presentation highlighted a study from Hong Kong, a time-varying analysis of GC dose and incident risk for major adverse cardiovascular events (MACE) in more than 12,000 patients with RA. Researchers found that GC regimens ≥ 5 mg/d significantly increased the risk for MACE. Comparatively, doses below this threshold did not confer excessive risk, he said.

Low-dose GCs are lesser toxic than high-dose GCs, noted Joan Merrill, MD, a professor with the Arthritis and Clinical Immunology Research Program at The University of Oklahoma Health Sciences Center, Oklahoma City. “There may be less weight gain, less chance of acne, and less risk for all the slower, more organ-threatening side effects.”

Bianca Nogrady/MDedge News

Tapering Options Across Diseases

Rheumatologists in the field continue to navigate GC-tapering options and treatment combinations that reduce the cumulative use of GCs over time, finding their own solutions based on the conditions they treat.

In his EULAR presentation, Dr. Buttgereit suggested that current therapeutic approaches for RA may be too narrow when they don’t consider the possibility of including very low doses of GCs.

For RA, “why shouldn’t we not do a combination of something like methotrexate plus a JAK inhibitor or a biological,” plus a very low dose of GCs < 5 mg/d, he asked.

However, Dr. Adami said he generally avoids GCs if RA disease activity is not severe (based on DAS28) and if the patient has a visual analog scale pain score < 7. “Nonetheless, even in patients with more severe disease, I would avoid GCs for more than 3 months. Usually, 1 month of steroids, tapered rapidly and discontinued.”

All patients should receive an appropriate treat-to-target strategy with csDMARDs and biologics if needed, he added.

A patient coming to clinic with difficult-to-treat RA who chronically uses GCs deserves special attention. The priority is bone protection with an anti-osteoporosis medication. “I found that JAK inhibitors, in some cases, help with the discontinuation of steroids, especially in those with residual pain. Therefore, I would think of switching medication,” Dr. Adami said.

For polymyalgia rheumatica, most clinicians will likely try to taper GCs around 52 weeks, similar to ACR/EULAR guidelines, according to Robert F. Spiera, MD, director of the Scleroderma and Vasculitis Program at Hospital for Special Surgery, New York City.

Hospital for Special Surgery

What to Consider for AI Symptoms

Clinicians also need to address AI in patients who are coming off GCs, Dr. Sattui said. He advised that symptoms suggestive of AI, including malaise, fatigue, nausea, and muscle and/or joint pain, should guide testing.

Even in the absence of symptoms, clinicians should consider assessing patients who have been on high doses for prolonged periods or obese or older adults who might be at a high risk for AI. “Signs to consider include weight loss, hypotension, or orthostatism,” he said.

Differentiating between AI symptoms and symptoms from the underlying disease can be a challenge. This requires a physical exam and workup, including morning serum cortisol. Collaboration with endocrinology colleagues and other treating providers is important, as well as patient education of symptoms and monitoring for possible adjustments in treating AI and other acute diseases, he said.

Dr. Smolen received research grants from AbbVie, AstraZeneca, Galapagos, and Eli Lilly. Dr. Adami received speaker fees and/or was a consultant for Galapagos, Theramex, Amgen, Eli Lilly, UCB, Fresenius Kabi, Bristol Myers Squibb, Abiogen, and Pfizer. Dr. Buttgereit’s disclosures included AbbVie, AstraZeneca, Grünenthal, Horizon Therapeutics, Mundipharma, Pfizer, and Roche. Dr. Merrill had no relevant disclosures. Dr. Spiera has been a consultant for Roche-Genentech, GlaxoSmithKline, Sanofi, ChemoCentryx, Novartis, Galderma, Cytori, AstraZeneca, Amgen, and AbbVie and received research grant support from GlaxoSmithKline, Roche-Genentech, AstraZeneca, Bristol Myers Squibb, Kadmon, Boehringer Ingelheim, Cytori, ChemoCentryx, Corbus, Novartis, Amgen, and AbbVie. Dr. Sattui reported receiving research support from AstraZeneca and GlaxoSmithKline (clinical trials), receiving consulting fees from Sanofi (funds toward research support), serving on advisory boards for Sanofi and Amgen (funds toward research support), and receiving speaker fees from Fresenius Kabi (funds toward research support).
 

A version of this article appeared on Medscape.com.

Now, 75 years after the first presentations were made on the “sensational” effects of cortisone in the treatment of rheumatoid arthritis (RA), glucocorticoids (GCs) are still highly relevant and widely used in the management of RA and other immune-mediated inflammatory diseases.

“It makes me smile because this is such an old drug, and we need it still so much. It still hasn’t been replaced,” Josef S. Smolen, MD, observed at annual European Congress of Rheumatology.

At low doses, GCs are highly effective as anti-inflammatory and anti-destructive agents in RA and many other diseases, said Dr. Smolen, a rheumatologist and immunologist and professor emeritus at the Medical University of Vienna, Austria.

But even after all this time, the mechanisms that lead to efficacy vs toxicity have yet to be clarified. “Such separation may provide further insights into future treatment options,” said Dr. Smolen.

Sara Freeman/MDedge News

Societies Agree: Discontinue as Fast as Possible

GCs have been associated with a long list of adverse events, most notably Cushing syndrome, hypertension, cardiovascular disease, osteoporosis, myopathy, peptic ulcer, adrenal insufficiency (AI), infections, mood disorders, ophthalmologic disorders such as cataracts, skin disorders, menstrual septic necrosis, and pancreatitis.

Dose matters, Dr. Smolen said, citing studies that found that cumulative GC doses of 1000 or 1100 mg increase risks. One study by German researchers found that doses above 10 mg/d significantly raised the hazard ratio for death.

Because high disease activity is also associated with an equally high mortality risk, “we have to balance this out: Active disease vs glucocorticoid use, especially in countries that have less access to modern therapies than we have in the more affluent Western regions,” Dr. Smolen said.

Rheumatology societies generally agree that clinicians should try to minimize GC use or eventually discontinue the therapy.

The American College of Rheumatology recommends not using GCs as part of the first-line treatment of RA. “And if you want to use [them], you should do that for less than 3 months, taper and discontinue as fast as possible, and use the lowest dose possible,” Dr. Adami said.

EULAR’s recommendation is more nuanced in that it allows for a lower dose but gives physicians more choice in how they want to handle GCs, Dr. Adami said. The task force added that all patients should try to taper down or discontinue as fast as possible, he said.

For GCs in the management of systemic lupus erythematosus, a EULAR task force recommended that the type and severity of organ involvement should determine dose, with a long-term goal of maintaining the dose < 5 mg/d or possibly withdrawing it.

EULAR also recommends GC bridging when initiating or changing conventional synthetic (cs) DMARDs. This effectively dismisses the use of GCs when using biologic DMARDs or targeted synthetic DMARDs. As a bridging therapy, EULAR recommends either a single parenteral dose of GC or a predefined tapering or discontinuation scheme within 3 months, when starting an oral GC.
 

Low-Dose Approach Gains Ground

While saying he’d be the first physician to eliminate GCs whenever possible, Dr. Buttgereit made the case before the EULAR Congress that GCs in low doses could still play a role in treatment.

Many physicians believe that very low doses between 2 and 4 mg/d are a realistic therapy option for RA, he said, adding that a mean daily usage < 5 mg could be used over a longer period with relatively low risk.

Several studies he coauthored tested the 5-mg approach. The GLORIA trial compared 5 mg/d prednisolone and placebo in 451 patients aged 65 years and older with active RA over the course of 2 years. The researchers found that patients on prednisolone had a mean Disease Activity Score in 28 joints (DAS28) that was 0.37 points lower and mean joint damage score that was 1.7 points lower than those of patients on placebo, suggesting that the GC had long-term benefits in these patients with RA.

The tradeoff was a 24% increase in the risk of having at least one adverse event of special interest, but most of these events were non-severe infections, Dr. Buttgereit said.

Another study, the SEMIRA trial, assigned 128 patients to a continued regimen of prednisone 5 mg/d for 24 weeks. Another group of 131 patients received a tapered-prednisone regimen. All patients received tocilizumab 162 mg with or without csDMARDs, maintained at stable doses.

Patients in the first cohort achieved superior disease activity control than those in the tapered regimen group. “The side effects showed that in the tapering prednisone group, there were more treatment-emergent adverse effects in this double-blind trial as compared to the continued prednisone group,” Dr. Buttgereit said.

One limitation of the SEMIRA trial was that it studied the effect of tocilizumab as a GC-sparing agent, and it didn’t consider using a tumor necrosis factor or Janus kinase (JAK) inhibitor, which might have a more potent effect on pain and GC dose reduction, Dr. Adami said. “Why do we need to use glucocorticoids if we know they might be detrimental, if we know there might be some other option in our armamentarium?”

Other studies have shown that low-dose GC protocols can be used with standard treatment, according to Sebastian E. Sattui, MD, assistant professor of medicine and director of the Vasculitis Center at the University of Pittsburgh School of Medicine.

“Examples of this are the LoVAS and PEXIVAS studies for antineutrophil cytoplasmic antibody-associated [ANCA] vasculitis. This has been highlighted in existing treatment recommendations for ANCA vasculitis and systemic lupus erythematosus nephritis,” Dr. Sattui said.

Debating the Toxicity Threshold

Are low GC dosages significantly associated with adverse events like mortality, cardiovascular, or diabetes risk? It depends on who you ask.

Much of the toxicity data on GCs come from inadequately powered or controlled studies and often refer to doses that currently are considered too high, Dr. Buttgereit said. His presentation highlighted a study from Hong Kong, a time-varying analysis of GC dose and incident risk for major adverse cardiovascular events (MACE) in more than 12,000 patients with RA. Researchers found that GC regimens ≥ 5 mg/d significantly increased the risk for MACE. Comparatively, doses below this threshold did not confer excessive risk, he said.

Low-dose GCs are lesser toxic than high-dose GCs, noted Joan Merrill, MD, a professor with the Arthritis and Clinical Immunology Research Program at The University of Oklahoma Health Sciences Center, Oklahoma City. “There may be less weight gain, less chance of acne, and less risk for all the slower, more organ-threatening side effects.”

Bianca Nogrady/MDedge News

Tapering Options Across Diseases

Rheumatologists in the field continue to navigate GC-tapering options and treatment combinations that reduce the cumulative use of GCs over time, finding their own solutions based on the conditions they treat.

In his EULAR presentation, Dr. Buttgereit suggested that current therapeutic approaches for RA may be too narrow when they don’t consider the possibility of including very low doses of GCs.

For RA, “why shouldn’t we not do a combination of something like methotrexate plus a JAK inhibitor or a biological,” plus a very low dose of GCs < 5 mg/d, he asked.

However, Dr. Adami said he generally avoids GCs if RA disease activity is not severe (based on DAS28) and if the patient has a visual analog scale pain score < 7. “Nonetheless, even in patients with more severe disease, I would avoid GCs for more than 3 months. Usually, 1 month of steroids, tapered rapidly and discontinued.”

All patients should receive an appropriate treat-to-target strategy with csDMARDs and biologics if needed, he added.

A patient coming to clinic with difficult-to-treat RA who chronically uses GCs deserves special attention. The priority is bone protection with an anti-osteoporosis medication. “I found that JAK inhibitors, in some cases, help with the discontinuation of steroids, especially in those with residual pain. Therefore, I would think of switching medication,” Dr. Adami said.

For polymyalgia rheumatica, most clinicians will likely try to taper GCs around 52 weeks, similar to ACR/EULAR guidelines, according to Robert F. Spiera, MD, director of the Scleroderma and Vasculitis Program at Hospital for Special Surgery, New York City.

Hospital for Special Surgery

What to Consider for AI Symptoms

Clinicians also need to address AI in patients who are coming off GCs, Dr. Sattui said. He advised that symptoms suggestive of AI, including malaise, fatigue, nausea, and muscle and/or joint pain, should guide testing.

Even in the absence of symptoms, clinicians should consider assessing patients who have been on high doses for prolonged periods or obese or older adults who might be at a high risk for AI. “Signs to consider include weight loss, hypotension, or orthostatism,” he said.

Differentiating between AI symptoms and symptoms from the underlying disease can be a challenge. This requires a physical exam and workup, including morning serum cortisol. Collaboration with endocrinology colleagues and other treating providers is important, as well as patient education of symptoms and monitoring for possible adjustments in treating AI and other acute diseases, he said.

Dr. Smolen received research grants from AbbVie, AstraZeneca, Galapagos, and Eli Lilly. Dr. Adami received speaker fees and/or was a consultant for Galapagos, Theramex, Amgen, Eli Lilly, UCB, Fresenius Kabi, Bristol Myers Squibb, Abiogen, and Pfizer. Dr. Buttgereit’s disclosures included AbbVie, AstraZeneca, Grünenthal, Horizon Therapeutics, Mundipharma, Pfizer, and Roche. Dr. Merrill had no relevant disclosures. Dr. Spiera has been a consultant for Roche-Genentech, GlaxoSmithKline, Sanofi, ChemoCentryx, Novartis, Galderma, Cytori, AstraZeneca, Amgen, and AbbVie and received research grant support from GlaxoSmithKline, Roche-Genentech, AstraZeneca, Bristol Myers Squibb, Kadmon, Boehringer Ingelheim, Cytori, ChemoCentryx, Corbus, Novartis, Amgen, and AbbVie. Dr. Sattui reported receiving research support from AstraZeneca and GlaxoSmithKline (clinical trials), receiving consulting fees from Sanofi (funds toward research support), serving on advisory boards for Sanofi and Amgen (funds toward research support), and receiving speaker fees from Fresenius Kabi (funds toward research support).
 

A version of this article appeared on Medscape.com.

Now, 75 years after the first presentations were made on the “sensational” effects of cortisone in the treatment of rheumatoid arthritis (RA), glucocorticoids (GCs) are still highly relevant and widely used in the management of RA and other immune-mediated inflammatory diseases.

“It makes me smile because this is such an old drug, and we need it still so much. It still hasn’t been replaced,” Josef S. Smolen, MD, observed at annual European Congress of Rheumatology.

At low doses, GCs are highly effective as anti-inflammatory and anti-destructive agents in RA and many other diseases, said Dr. Smolen, a rheumatologist and immunologist and professor emeritus at the Medical University of Vienna, Austria.

But even after all this time, the mechanisms that lead to efficacy vs toxicity have yet to be clarified. “Such separation may provide further insights into future treatment options,” said Dr. Smolen.

Sara Freeman/MDedge News

Societies Agree: Discontinue as Fast as Possible

GCs have been associated with a long list of adverse events, most notably Cushing syndrome, hypertension, cardiovascular disease, osteoporosis, myopathy, peptic ulcer, adrenal insufficiency (AI), infections, mood disorders, ophthalmologic disorders such as cataracts, skin disorders, menstrual septic necrosis, and pancreatitis.

Dose matters, Dr. Smolen said, citing studies that found that cumulative GC doses of 1000 or 1100 mg increase risks. One study by German researchers found that doses above 10 mg/d significantly raised the hazard ratio for death.

Because high disease activity is also associated with an equally high mortality risk, “we have to balance this out: Active disease vs glucocorticoid use, especially in countries that have less access to modern therapies than we have in the more affluent Western regions,” Dr. Smolen said.

Rheumatology societies generally agree that clinicians should try to minimize GC use or eventually discontinue the therapy.

The American College of Rheumatology recommends not using GCs as part of the first-line treatment of RA. “And if you want to use [them], you should do that for less than 3 months, taper and discontinue as fast as possible, and use the lowest dose possible,” Dr. Adami said.

EULAR’s recommendation is more nuanced in that it allows for a lower dose but gives physicians more choice in how they want to handle GCs, Dr. Adami said. The task force added that all patients should try to taper down or discontinue as fast as possible, he said.

For GCs in the management of systemic lupus erythematosus, a EULAR task force recommended that the type and severity of organ involvement should determine dose, with a long-term goal of maintaining the dose < 5 mg/d or possibly withdrawing it.

EULAR also recommends GC bridging when initiating or changing conventional synthetic (cs) DMARDs. This effectively dismisses the use of GCs when using biologic DMARDs or targeted synthetic DMARDs. As a bridging therapy, EULAR recommends either a single parenteral dose of GC or a predefined tapering or discontinuation scheme within 3 months, when starting an oral GC.
 

Low-Dose Approach Gains Ground

While saying he’d be the first physician to eliminate GCs whenever possible, Dr. Buttgereit made the case before the EULAR Congress that GCs in low doses could still play a role in treatment.

Many physicians believe that very low doses between 2 and 4 mg/d are a realistic therapy option for RA, he said, adding that a mean daily usage < 5 mg could be used over a longer period with relatively low risk.

Several studies he coauthored tested the 5-mg approach. The GLORIA trial compared 5 mg/d prednisolone and placebo in 451 patients aged 65 years and older with active RA over the course of 2 years. The researchers found that patients on prednisolone had a mean Disease Activity Score in 28 joints (DAS28) that was 0.37 points lower and mean joint damage score that was 1.7 points lower than those of patients on placebo, suggesting that the GC had long-term benefits in these patients with RA.

The tradeoff was a 24% increase in the risk of having at least one adverse event of special interest, but most of these events were non-severe infections, Dr. Buttgereit said.

Another study, the SEMIRA trial, assigned 128 patients to a continued regimen of prednisone 5 mg/d for 24 weeks. Another group of 131 patients received a tapered-prednisone regimen. All patients received tocilizumab 162 mg with or without csDMARDs, maintained at stable doses.

Patients in the first cohort achieved superior disease activity control than those in the tapered regimen group. “The side effects showed that in the tapering prednisone group, there were more treatment-emergent adverse effects in this double-blind trial as compared to the continued prednisone group,” Dr. Buttgereit said.

One limitation of the SEMIRA trial was that it studied the effect of tocilizumab as a GC-sparing agent, and it didn’t consider using a tumor necrosis factor or Janus kinase (JAK) inhibitor, which might have a more potent effect on pain and GC dose reduction, Dr. Adami said. “Why do we need to use glucocorticoids if we know they might be detrimental, if we know there might be some other option in our armamentarium?”

Other studies have shown that low-dose GC protocols can be used with standard treatment, according to Sebastian E. Sattui, MD, assistant professor of medicine and director of the Vasculitis Center at the University of Pittsburgh School of Medicine.

“Examples of this are the LoVAS and PEXIVAS studies for antineutrophil cytoplasmic antibody-associated [ANCA] vasculitis. This has been highlighted in existing treatment recommendations for ANCA vasculitis and systemic lupus erythematosus nephritis,” Dr. Sattui said.

Debating the Toxicity Threshold

Are low GC dosages significantly associated with adverse events like mortality, cardiovascular, or diabetes risk? It depends on who you ask.

Much of the toxicity data on GCs come from inadequately powered or controlled studies and often refer to doses that currently are considered too high, Dr. Buttgereit said. His presentation highlighted a study from Hong Kong, a time-varying analysis of GC dose and incident risk for major adverse cardiovascular events (MACE) in more than 12,000 patients with RA. Researchers found that GC regimens ≥ 5 mg/d significantly increased the risk for MACE. Comparatively, doses below this threshold did not confer excessive risk, he said.

Low-dose GCs are lesser toxic than high-dose GCs, noted Joan Merrill, MD, a professor with the Arthritis and Clinical Immunology Research Program at The University of Oklahoma Health Sciences Center, Oklahoma City. “There may be less weight gain, less chance of acne, and less risk for all the slower, more organ-threatening side effects.”

Bianca Nogrady/MDedge News

Tapering Options Across Diseases

Rheumatologists in the field continue to navigate GC-tapering options and treatment combinations that reduce the cumulative use of GCs over time, finding their own solutions based on the conditions they treat.

In his EULAR presentation, Dr. Buttgereit suggested that current therapeutic approaches for RA may be too narrow when they don’t consider the possibility of including very low doses of GCs.

For RA, “why shouldn’t we not do a combination of something like methotrexate plus a JAK inhibitor or a biological,” plus a very low dose of GCs < 5 mg/d, he asked.

However, Dr. Adami said he generally avoids GCs if RA disease activity is not severe (based on DAS28) and if the patient has a visual analog scale pain score < 7. “Nonetheless, even in patients with more severe disease, I would avoid GCs for more than 3 months. Usually, 1 month of steroids, tapered rapidly and discontinued.”

All patients should receive an appropriate treat-to-target strategy with csDMARDs and biologics if needed, he added.

A patient coming to clinic with difficult-to-treat RA who chronically uses GCs deserves special attention. The priority is bone protection with an anti-osteoporosis medication. “I found that JAK inhibitors, in some cases, help with the discontinuation of steroids, especially in those with residual pain. Therefore, I would think of switching medication,” Dr. Adami said.

For polymyalgia rheumatica, most clinicians will likely try to taper GCs around 52 weeks, similar to ACR/EULAR guidelines, according to Robert F. Spiera, MD, director of the Scleroderma and Vasculitis Program at Hospital for Special Surgery, New York City.

Hospital for Special Surgery

What to Consider for AI Symptoms

Clinicians also need to address AI in patients who are coming off GCs, Dr. Sattui said. He advised that symptoms suggestive of AI, including malaise, fatigue, nausea, and muscle and/or joint pain, should guide testing.

Even in the absence of symptoms, clinicians should consider assessing patients who have been on high doses for prolonged periods or obese or older adults who might be at a high risk for AI. “Signs to consider include weight loss, hypotension, or orthostatism,” he said.

Differentiating between AI symptoms and symptoms from the underlying disease can be a challenge. This requires a physical exam and workup, including morning serum cortisol. Collaboration with endocrinology colleagues and other treating providers is important, as well as patient education of symptoms and monitoring for possible adjustments in treating AI and other acute diseases, he said.

Dr. Smolen received research grants from AbbVie, AstraZeneca, Galapagos, and Eli Lilly. Dr. Adami received speaker fees and/or was a consultant for Galapagos, Theramex, Amgen, Eli Lilly, UCB, Fresenius Kabi, Bristol Myers Squibb, Abiogen, and Pfizer. Dr. Buttgereit’s disclosures included AbbVie, AstraZeneca, Grünenthal, Horizon Therapeutics, Mundipharma, Pfizer, and Roche. Dr. Merrill had no relevant disclosures. Dr. Spiera has been a consultant for Roche-Genentech, GlaxoSmithKline, Sanofi, ChemoCentryx, Novartis, Galderma, Cytori, AstraZeneca, Amgen, and AbbVie and received research grant support from GlaxoSmithKline, Roche-Genentech, AstraZeneca, Bristol Myers Squibb, Kadmon, Boehringer Ingelheim, Cytori, ChemoCentryx, Corbus, Novartis, Amgen, and AbbVie. Dr. Sattui reported receiving research support from AstraZeneca and GlaxoSmithKline (clinical trials), receiving consulting fees from Sanofi (funds toward research support), serving on advisory boards for Sanofi and Amgen (funds toward research support), and receiving speaker fees from Fresenius Kabi (funds toward research support).
 

A version of this article appeared on Medscape.com.

New treatment strategies in clinical trials show promise in reducing the tapering time of glucocorticoids (GCs) or possibly even replacing the use of GCs. Selective GC receptor agonists and modulators and GC plus hydroxysteroid dehydrogenase inhibitor combination therapy are some of the approaches under consideration.

“There is growing observational data that confirms the GC-sparing effect seen in some of these clinical trials in real-world data,” said Sebastian E. Sattui, MD, assistant professor of medicine and director of the Vasculitis Center at the University of Pittsburgh Medical Center, Pittsburgh.

GC minimization is an important goal, “and the data emerging from these trials should be reassuring for rheumatology providers,” Dr. Sattui said.

HSD-1 Inhibitors Under Study

11ß-Hydroxysteroid dehydrogenase type 1 (11ß-HSD1) is a tissue-specific intracellular modulator of GC action that’s been trialed for a number of rheumatic conditions. “HSD-1 deficiency or inhibition has been consistently associated with reduced GC side effects in mouse and human,” wrote the authors of a study testing the coadministration of HSD-1 inhibitor SPI-62 (clofutriben) with prednisolone in patients with polymyalgia rheumatica (PMR) to measure its impact on efficacy and toxicity.

Lead study author David Katz, PhD, chief scientific officer at Sparrow Pharmaceuticals, presented results at the at the annual European Congress of Rheumatology.

GCs are often the first-line therapy with PMR. However, it’s very difficult for patients to stop taking GCs once they start taking them. The study included patients with PMR who were taking 10 mg/d prednisolone and didn’t require a dose increase. For the study, they continued prednisolone without dose reduction for 4 weeks, receiving either SPI-62 6 mg/d or a matching placebo for 2 weeks.

During SPI-62 treatment, researchers in sequential cohorts maintained daily prednisolone doses at 10 mg, adjusted to 15 mg or adjusted to 20 mg.

A 10-mg dose of prednisolone combined with 6 mg of SPI-62 demonstrated less efficacy compared with placebo but improved upon prednisolone toxicities such as bone formation and resorption biomarkers, lipidemia, and insulin resistance. Doubling the dose to 20 mg prednisolone combined with SPI-62 achieved similar efficacy and maintained improvement of prednisolone toxicity markers.

“In patients with PMR, when we double the dose of prednisolone during coadministration with a potent HSD-1 inhibitor, we are able to have similar stability of symptoms, physical function, and systemic inflammation. At the same time, we are able to show improvements on biomarkers of bone turnover and insulin resistance,” Dr. Katz informed the EULAR 2024 audience.

An ongoing phase 2 clinical trial is testing SPI-62 in patients with endogenous Cushing syndrome. “It’s a longer-term trial, so we’re able to see at least an individual patient’s more clinical outcomes such as reversal of Cushing’s-associated myopathy and the ability of patients to discontinue all of their antidiabetic medications and yet still have good glycemic control,” he said.

Another research team from the United Kingdom explored whether AZD4017, an inhibitor of human 11ß-HSD1, could mitigate GC effects. The researchers randomly assigned 32 healthy male volunteers to AZD4017 or placebo, along with prednisolone. They reported a worsening of hepatic insulin sensitivity in the placebo group but not in the AZD4017 group, and protective effects of AZD4017 on markers of lipid metabolism and bone turnover, as well as lowered nighttime blood pressure. The results signified that coadministration of AZD4017 with prednisolone in men could be a way to reduce GC side effects.

In a Japanese phase 1/2 study, 11ß-HSD1 inhibitor S-707106 proved useful as an insulin sensitizer and antisarcopenic and anti-obesity medication in 16 patients with Cushing syndrome and autonomous cortisol secretion.
 

Novel Antitumor Necrosis Factor (TNF) Antibody Plus GC Receptor Modulator Conjugate

A novel antibody-drug conjugate comprising the anti-TNF monoclonal antibody adalimumab (ABBV-3373) linked to a GC receptor modulator shows promise as a GC alternative.

A notable 2022 study authored by Frank Buttgereit, MD, and other researchers assessed its safety and efficacy in a randomized, double-blind, active-controlled, proof-of-concept trial.

ABBV-3373 “was designed to potentially allow precise targeting of activated immune cells while significantly dampening inflammation and minimizing the systemic side effects associated with glucocorticoids,” according to AbbVie, its manufacturer.

A total of 48 adults with moderate to severe rheumatoid arthritis receiving background methotrexate were randomized to receive either ABBV-3373 (n = 31) or adalimumab (n = 17). The novel drug at 12 weeks showed a −2.65 reduction in the Disease Activity Score in 28 joints using C-reactive protein, compared with −2.13 for adalimumab. Researchers also predicted ABBV-3373 to be more effective than adalimumab based on in-trial and historical adalimumab data.

“We have great expectations for this molecule,” said Giovanni Adami, MD, PhD, a rheumatologist at the University of Verona, Verona, Italy, who has coauthored several studies on the use of GCs. Plans are underway for a phase 3 study with ABBV-3373.
 

C5a and Interleukin (IL)-6 Receptor Inhibitors as GC-Sparing Drugs

Investigators in a 2021 paper explored whether the C5a receptor inhibitor avacopan could effectively treat patients with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis without the need for daily GCs, following treatment with either cyclophosphamide or rituximab. They randomized 331 patients to receive avacopan or prednisone given on a tapering schedule for 20 weeks (60 mg/d tapered to discontinuation by week 21). “Avacopan was noninferior but not superior to prednisone taper with respect to remission at week 26 and was superior to prednisone taper with respect to sustained remission at week 52,” the investigators summarized.

A longer trial should test avacopan’s safety and durability in patients with ANCA-associated vasculitis, they recommended.

Sarilumab, a human monoclonal antibody that binds IL-6 receptor alpha and blocks the IL-6 pathway, yielded good results in the phase 3 SAPHYR trial as an alternative for patients with PMR who relapse while tapering prednisone therapy.

Researchers in the SAPHYR trial randomly assigned 118 patients 1:1 to receive a twice-monthly subcutaneous injection of sarilumab over 52 weeks plus a 14-week prednisone taper or placebo plus a 52-week prednisone taper. Patients in each group received a tapered GC dose initially at 15 mg/d for 2 weeks in a blinded fashion to control for disease at baseline.

Sarilumab effectively sustained remission in patients, significantly reducing the GC dose compared with placebo.

Disease flare after clinical remission took place in 57% of patients in the placebo group, vs 24% in the sarilumab group. “The placebo-treated patients had a fairly traditional 52-week GC taper. The patients treated with sarilumab had a very rapid GC taper,” said lead study author Robert Spiera, MD, director of the Scleroderma, Vasculitis and Myositis Center at the Hospital for Special Surgery, New York City.

In his own practice, Dr. Spiera often treats his patients with new-onset PMR with a fairly rapid GC taper, akin to what was used in SAPHYR, recognizing that a portion of these patients can be successfully treated with a relatively brief course of GCs, although the majority will need to have “rescue” therapy for flares with that approach.

Hospital for Special Surgery

A version of this article appeared on Medscape.com.

New treatment strategies in clinical trials show promise in reducing the tapering time of glucocorticoids (GCs) or possibly even replacing the use of GCs. Selective GC receptor agonists and modulators and GC plus hydroxysteroid dehydrogenase inhibitor combination therapy are some of the approaches under consideration.

“There is growing observational data that confirms the GC-sparing effect seen in some of these clinical trials in real-world data,” said Sebastian E. Sattui, MD, assistant professor of medicine and director of the Vasculitis Center at the University of Pittsburgh Medical Center, Pittsburgh.

GC minimization is an important goal, “and the data emerging from these trials should be reassuring for rheumatology providers,” Dr. Sattui said.

HSD-1 Inhibitors Under Study

11ß-Hydroxysteroid dehydrogenase type 1 (11ß-HSD1) is a tissue-specific intracellular modulator of GC action that’s been trialed for a number of rheumatic conditions. “HSD-1 deficiency or inhibition has been consistently associated with reduced GC side effects in mouse and human,” wrote the authors of a study testing the coadministration of HSD-1 inhibitor SPI-62 (clofutriben) with prednisolone in patients with polymyalgia rheumatica (PMR) to measure its impact on efficacy and toxicity.

Lead study author David Katz, PhD, chief scientific officer at Sparrow Pharmaceuticals, presented results at the at the annual European Congress of Rheumatology.

GCs are often the first-line therapy with PMR. However, it’s very difficult for patients to stop taking GCs once they start taking them. The study included patients with PMR who were taking 10 mg/d prednisolone and didn’t require a dose increase. For the study, they continued prednisolone without dose reduction for 4 weeks, receiving either SPI-62 6 mg/d or a matching placebo for 2 weeks.

During SPI-62 treatment, researchers in sequential cohorts maintained daily prednisolone doses at 10 mg, adjusted to 15 mg or adjusted to 20 mg.

A 10-mg dose of prednisolone combined with 6 mg of SPI-62 demonstrated less efficacy compared with placebo but improved upon prednisolone toxicities such as bone formation and resorption biomarkers, lipidemia, and insulin resistance. Doubling the dose to 20 mg prednisolone combined with SPI-62 achieved similar efficacy and maintained improvement of prednisolone toxicity markers.

“In patients with PMR, when we double the dose of prednisolone during coadministration with a potent HSD-1 inhibitor, we are able to have similar stability of symptoms, physical function, and systemic inflammation. At the same time, we are able to show improvements on biomarkers of bone turnover and insulin resistance,” Dr. Katz informed the EULAR 2024 audience.

An ongoing phase 2 clinical trial is testing SPI-62 in patients with endogenous Cushing syndrome. “It’s a longer-term trial, so we’re able to see at least an individual patient’s more clinical outcomes such as reversal of Cushing’s-associated myopathy and the ability of patients to discontinue all of their antidiabetic medications and yet still have good glycemic control,” he said.

Another research team from the United Kingdom explored whether AZD4017, an inhibitor of human 11ß-HSD1, could mitigate GC effects. The researchers randomly assigned 32 healthy male volunteers to AZD4017 or placebo, along with prednisolone. They reported a worsening of hepatic insulin sensitivity in the placebo group but not in the AZD4017 group, and protective effects of AZD4017 on markers of lipid metabolism and bone turnover, as well as lowered nighttime blood pressure. The results signified that coadministration of AZD4017 with prednisolone in men could be a way to reduce GC side effects.

In a Japanese phase 1/2 study, 11ß-HSD1 inhibitor S-707106 proved useful as an insulin sensitizer and antisarcopenic and anti-obesity medication in 16 patients with Cushing syndrome and autonomous cortisol secretion.
 

Novel Antitumor Necrosis Factor (TNF) Antibody Plus GC Receptor Modulator Conjugate

A novel antibody-drug conjugate comprising the anti-TNF monoclonal antibody adalimumab (ABBV-3373) linked to a GC receptor modulator shows promise as a GC alternative.

A notable 2022 study authored by Frank Buttgereit, MD, and other researchers assessed its safety and efficacy in a randomized, double-blind, active-controlled, proof-of-concept trial.

ABBV-3373 “was designed to potentially allow precise targeting of activated immune cells while significantly dampening inflammation and minimizing the systemic side effects associated with glucocorticoids,” according to AbbVie, its manufacturer.

A total of 48 adults with moderate to severe rheumatoid arthritis receiving background methotrexate were randomized to receive either ABBV-3373 (n = 31) or adalimumab (n = 17). The novel drug at 12 weeks showed a −2.65 reduction in the Disease Activity Score in 28 joints using C-reactive protein, compared with −2.13 for adalimumab. Researchers also predicted ABBV-3373 to be more effective than adalimumab based on in-trial and historical adalimumab data.

“We have great expectations for this molecule,” said Giovanni Adami, MD, PhD, a rheumatologist at the University of Verona, Verona, Italy, who has coauthored several studies on the use of GCs. Plans are underway for a phase 3 study with ABBV-3373.
 

C5a and Interleukin (IL)-6 Receptor Inhibitors as GC-Sparing Drugs

Investigators in a 2021 paper explored whether the C5a receptor inhibitor avacopan could effectively treat patients with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis without the need for daily GCs, following treatment with either cyclophosphamide or rituximab. They randomized 331 patients to receive avacopan or prednisone given on a tapering schedule for 20 weeks (60 mg/d tapered to discontinuation by week 21). “Avacopan was noninferior but not superior to prednisone taper with respect to remission at week 26 and was superior to prednisone taper with respect to sustained remission at week 52,” the investigators summarized.

A longer trial should test avacopan’s safety and durability in patients with ANCA-associated vasculitis, they recommended.

Sarilumab, a human monoclonal antibody that binds IL-6 receptor alpha and blocks the IL-6 pathway, yielded good results in the phase 3 SAPHYR trial as an alternative for patients with PMR who relapse while tapering prednisone therapy.

Researchers in the SAPHYR trial randomly assigned 118 patients 1:1 to receive a twice-monthly subcutaneous injection of sarilumab over 52 weeks plus a 14-week prednisone taper or placebo plus a 52-week prednisone taper. Patients in each group received a tapered GC dose initially at 15 mg/d for 2 weeks in a blinded fashion to control for disease at baseline.

Sarilumab effectively sustained remission in patients, significantly reducing the GC dose compared with placebo.

Disease flare after clinical remission took place in 57% of patients in the placebo group, vs 24% in the sarilumab group. “The placebo-treated patients had a fairly traditional 52-week GC taper. The patients treated with sarilumab had a very rapid GC taper,” said lead study author Robert Spiera, MD, director of the Scleroderma, Vasculitis and Myositis Center at the Hospital for Special Surgery, New York City.

In his own practice, Dr. Spiera often treats his patients with new-onset PMR with a fairly rapid GC taper, akin to what was used in SAPHYR, recognizing that a portion of these patients can be successfully treated with a relatively brief course of GCs, although the majority will need to have “rescue” therapy for flares with that approach.

Hospital for Special Surgery

A version of this article appeared on Medscape.com.

New treatment strategies in clinical trials show promise in reducing the tapering time of glucocorticoids (GCs) or possibly even replacing the use of GCs. Selective GC receptor agonists and modulators and GC plus hydroxysteroid dehydrogenase inhibitor combination therapy are some of the approaches under consideration.

“There is growing observational data that confirms the GC-sparing effect seen in some of these clinical trials in real-world data,” said Sebastian E. Sattui, MD, assistant professor of medicine and director of the Vasculitis Center at the University of Pittsburgh Medical Center, Pittsburgh.

GC minimization is an important goal, “and the data emerging from these trials should be reassuring for rheumatology providers,” Dr. Sattui said.

HSD-1 Inhibitors Under Study

11ß-Hydroxysteroid dehydrogenase type 1 (11ß-HSD1) is a tissue-specific intracellular modulator of GC action that’s been trialed for a number of rheumatic conditions. “HSD-1 deficiency or inhibition has been consistently associated with reduced GC side effects in mouse and human,” wrote the authors of a study testing the coadministration of HSD-1 inhibitor SPI-62 (clofutriben) with prednisolone in patients with polymyalgia rheumatica (PMR) to measure its impact on efficacy and toxicity.

Lead study author David Katz, PhD, chief scientific officer at Sparrow Pharmaceuticals, presented results at the at the annual European Congress of Rheumatology.

GCs are often the first-line therapy with PMR. However, it’s very difficult for patients to stop taking GCs once they start taking them. The study included patients with PMR who were taking 10 mg/d prednisolone and didn’t require a dose increase. For the study, they continued prednisolone without dose reduction for 4 weeks, receiving either SPI-62 6 mg/d or a matching placebo for 2 weeks.

During SPI-62 treatment, researchers in sequential cohorts maintained daily prednisolone doses at 10 mg, adjusted to 15 mg or adjusted to 20 mg.

A 10-mg dose of prednisolone combined with 6 mg of SPI-62 demonstrated less efficacy compared with placebo but improved upon prednisolone toxicities such as bone formation and resorption biomarkers, lipidemia, and insulin resistance. Doubling the dose to 20 mg prednisolone combined with SPI-62 achieved similar efficacy and maintained improvement of prednisolone toxicity markers.

“In patients with PMR, when we double the dose of prednisolone during coadministration with a potent HSD-1 inhibitor, we are able to have similar stability of symptoms, physical function, and systemic inflammation. At the same time, we are able to show improvements on biomarkers of bone turnover and insulin resistance,” Dr. Katz informed the EULAR 2024 audience.

An ongoing phase 2 clinical trial is testing SPI-62 in patients with endogenous Cushing syndrome. “It’s a longer-term trial, so we’re able to see at least an individual patient’s more clinical outcomes such as reversal of Cushing’s-associated myopathy and the ability of patients to discontinue all of their antidiabetic medications and yet still have good glycemic control,” he said.

Another research team from the United Kingdom explored whether AZD4017, an inhibitor of human 11ß-HSD1, could mitigate GC effects. The researchers randomly assigned 32 healthy male volunteers to AZD4017 or placebo, along with prednisolone. They reported a worsening of hepatic insulin sensitivity in the placebo group but not in the AZD4017 group, and protective effects of AZD4017 on markers of lipid metabolism and bone turnover, as well as lowered nighttime blood pressure. The results signified that coadministration of AZD4017 with prednisolone in men could be a way to reduce GC side effects.

In a Japanese phase 1/2 study, 11ß-HSD1 inhibitor S-707106 proved useful as an insulin sensitizer and antisarcopenic and anti-obesity medication in 16 patients with Cushing syndrome and autonomous cortisol secretion.
 

Novel Antitumor Necrosis Factor (TNF) Antibody Plus GC Receptor Modulator Conjugate

A novel antibody-drug conjugate comprising the anti-TNF monoclonal antibody adalimumab (ABBV-3373) linked to a GC receptor modulator shows promise as a GC alternative.

A notable 2022 study authored by Frank Buttgereit, MD, and other researchers assessed its safety and efficacy in a randomized, double-blind, active-controlled, proof-of-concept trial.

ABBV-3373 “was designed to potentially allow precise targeting of activated immune cells while significantly dampening inflammation and minimizing the systemic side effects associated with glucocorticoids,” according to AbbVie, its manufacturer.

A total of 48 adults with moderate to severe rheumatoid arthritis receiving background methotrexate were randomized to receive either ABBV-3373 (n = 31) or adalimumab (n = 17). The novel drug at 12 weeks showed a −2.65 reduction in the Disease Activity Score in 28 joints using C-reactive protein, compared with −2.13 for adalimumab. Researchers also predicted ABBV-3373 to be more effective than adalimumab based on in-trial and historical adalimumab data.

“We have great expectations for this molecule,” said Giovanni Adami, MD, PhD, a rheumatologist at the University of Verona, Verona, Italy, who has coauthored several studies on the use of GCs. Plans are underway for a phase 3 study with ABBV-3373.
 

C5a and Interleukin (IL)-6 Receptor Inhibitors as GC-Sparing Drugs

Investigators in a 2021 paper explored whether the C5a receptor inhibitor avacopan could effectively treat patients with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis without the need for daily GCs, following treatment with either cyclophosphamide or rituximab. They randomized 331 patients to receive avacopan or prednisone given on a tapering schedule for 20 weeks (60 mg/d tapered to discontinuation by week 21). “Avacopan was noninferior but not superior to prednisone taper with respect to remission at week 26 and was superior to prednisone taper with respect to sustained remission at week 52,” the investigators summarized.

A longer trial should test avacopan’s safety and durability in patients with ANCA-associated vasculitis, they recommended.

Sarilumab, a human monoclonal antibody that binds IL-6 receptor alpha and blocks the IL-6 pathway, yielded good results in the phase 3 SAPHYR trial as an alternative for patients with PMR who relapse while tapering prednisone therapy.

Researchers in the SAPHYR trial randomly assigned 118 patients 1:1 to receive a twice-monthly subcutaneous injection of sarilumab over 52 weeks plus a 14-week prednisone taper or placebo plus a 52-week prednisone taper. Patients in each group received a tapered GC dose initially at 15 mg/d for 2 weeks in a blinded fashion to control for disease at baseline.

Sarilumab effectively sustained remission in patients, significantly reducing the GC dose compared with placebo.

Disease flare after clinical remission took place in 57% of patients in the placebo group, vs 24% in the sarilumab group. “The placebo-treated patients had a fairly traditional 52-week GC taper. The patients treated with sarilumab had a very rapid GC taper,” said lead study author Robert Spiera, MD, director of the Scleroderma, Vasculitis and Myositis Center at the Hospital for Special Surgery, New York City.

In his own practice, Dr. Spiera often treats his patients with new-onset PMR with a fairly rapid GC taper, akin to what was used in SAPHYR, recognizing that a portion of these patients can be successfully treated with a relatively brief course of GCs, although the majority will need to have “rescue” therapy for flares with that approach.

Hospital for Special Surgery

A version of this article appeared on Medscape.com.

VIENNA — Safe and effective options for lowering serum uric acid (sUA) in patients with gout who are refractory to conventional therapies appear to be near, judging from phase 2 and 3 trials that produced positive results at the annual European Congress of Rheumatology.

Reports from the meeting included two phase 2 studies with novel urate anion transporter 1 (URAT1) inhibitors for patients with refractory gout, in addition to extension data from the phase 3 trial program for SEL-212. In all cases, efficacy appeared to be on the same order of currently available drugs with potentially better tolerability, an important unmet need for patients with gout refractory to traditional therapies.
 

12-Month Outcomes With SEL-212

The extension data with SEL-212 follow the 6-month results presented from the DISSOLVE I and II trials at EULAR 2023. Now at 12 months, the benefits have proven to be generally sustained with no new safety signals, according to Herbert S.B. Baraf, MD, The Center for Rheumatology and Bone Research, Wheaton, Maryland.

Arthritis Foundation

SEL-212 is a drug platform involving two components delivered by intravenous infusion once monthly in sequence. The first, SEL-110, consists of tolerogenic nanoparticles containing sirolimus. The second, SEL-037, is the pegylated uricase pegadricase.

On the 1-month dosing schedule, most patients who had responded at 6 months were still responding at 12 months, and both of the two study doses of SEL-212 in the DISSOLVE trials were well tolerated over the extension, Dr. Baraf reported.

On the basis of the data so far, “this will be an effective and well tolerated therapy for refractory gout over a period of at least 12 months,” Dr. Baraf said.

The DISSOLVE I and II trials were identically designed. Patients with refractory gout, defined as failure to normalize sUA or control symptoms with a xanthine oxidase inhibitor, were randomly assigned to receive 0.15 mg SEL-212, 1.0 mg SEL-212, or placebo.

There was a stopping rule for patients who reached a sUA level < 2 mg/dL 1 hour after the infusion.

The primary endpoint was sUA level < 6 mg/dL for at least 80% of the sixth month of the 6-month trial. About 50% of patients on either dose of SEL-212 met this endpoint (vs 4% of those receiving placebo; P < .0001). There was a numerical advantage for the higher dose in both studies.

Patients who completed the 6-month trial were eligible for a 6-month extension, during which they remained on their assigned therapy, including placebo. This phase was also blinded. Patients who met the stopping rule in either the main study or extension did not take the study drug but remained in the study for final analysis.

Of the 265 patients who participated in the main phase of the study, 143 (54%) completed the 6-month extension. Most discontinuations were the result of the stopping rule. Reasons for other patients discontinuing the study included withdrawal of consent in about 10% of each treatment arm and adverse events in 13.8%, 6.8%, and 2.2% of the high-dose, low-dose, and placebo groups, respectively.

At 12 months, when the data from the two trials were pooled, the proportion of patients on therapy and responding remained at about 50% in the high-dose group and 43% in the low-dose group on an intention-to-treat analysis. Relative to the 8% response rate for placebo, the advantage for either dose was highly significant (P < .0001).

In the subgroup of patients with tophi at baseline, representing about half the study group, responses were low at 12 months, whether on high- (41%) or low-dose (43%) SEL-212. The rate of response among placebo patients with baseline tophi was 9%.
 

Safety of SEL-212

The safety over the 6-month extension did not differ substantially from that observed during the first 6 months, according to Dr. Baraf. This was reiterated in more detail by Alan Kivitz, MD, Altoona Center for Clinical Research, Duncansville, Pennsylvania. He delivered a separate safety presentation focused on DISSOLVE I.

Specifically, there were no serious adverse events thought to be related to treatment. Besides gout flares, which affected approximately 27% of patients regardless of active treatment or placebo assignment, the most common adverse effect was hypertriglyceridemia, which was observed in 5.4% of patients on active treatment vs 0% of those receiving placebo. Independent of the treatment arm, less than 5% of patients developed stomatitis or cellulitis during the 6-month extension period.

In the 6-month extension phase, there were no infusion reactions observed within 1 hour after SEL-212 administration and just two overall that occurred with low-dose SEL-212, according to Kivitz.

New Selective URAT1 Inhibitors

The other potential advance in the treatment of refractory gout is coming from newer selective URAT1 inhibitors. According to the lead investigators of two phase 2 trials evaluating a novel URAT1 inhibitor, the urate transporter protein has long been considered the most promising target for gout treatment. As this protein regulates the absorption of uric acid from the renal tubule, it has a direct uric acid–lowering effect. However, the adverse events of current agents, such as probenecid, benzbromarone, and sulfinpyrazone, have created a need for drugs with a better benefit-to-risk ratio.

In one of two multicenter phase 2 studies on refractory gout, the experimental agent ruzinurad was tested as an adjunct to the xanthine oxidase inhibitor febuxostat. In the other, the objective was to evaluate whether the experimental agent AR882 or AR882 plus allopurinol is better than allopurinol alone for reducing tophi at 12 months.
 

Ruzinurad Plus Febuxostat

In the ruzinurad trial, 151 patients with symptomatic gout and elevated sUA (> 6 mg/dL) for at least 6 weeks on stable doses of febuxostat were randomized to receive 5 mg ruzinurad, 10 mg ruzinurad, or placebo. All remained on febuxostat. In the active treatment arms, the starting ruzinurad dose was 1 mg before titrating up to the assigned target.

For the primary endpoint of sUA < 6 mg/dL at 12 weeks, the rates were 56.9%, 53.1%, and 13.7% in the high-dose, low-dose, and placebo groups, respectively (P < .0001 for both ruzinurad arms), reported Huihua Ding, MD, a clinician and researcher at Shanghai Jiao Tong University, Shanghai, China.

“Consistently, subgroup analyses based on baseline eGFR [estimated glomerular filtration rate], sUA, and tophus demonstrated superior effective of ruzinurad plus febuxostat over placebo plus febuxostat,” reported Dr. Ding, who noted that previous clinical studies suggested the potential for synergism between ruzinurad and febuxostat.

The proportion of patients achieving the more rigorous target of < 0.5 mg/dL was also higher with the higher and lower doses of ruzinurad vs placebo (43.1% and 38.8% vs 9.8%, respectively).

The proportion of patients with treatment-emergent side effects did not differ between the three groups. The most common were gout flares, which were observed in 39.2%, 49.0%, and 45.1% in the high-dose, low-dose, and placebo groups, respectively. Most adverse events were mild or moderate, and none led to treatment discontinuation.

The favorable benefit-to-risk profile of ruzinurad was attributed by Dr. Ding to its high relative selectivity and potent inhibition of URAT1, an advantage that might be relevant to avoiding side effects at higher doses.

AR882 in Patients With Tophi

In the trial with AR882, 42 patients with refractory gout and at least one subcutaneous tophus were randomized to receive 75 mg AR882, 50 mg AR882 plus allopurinol, or allopurinol alone. All drugs were taken once daily. Doses of allopurinol of up to 300 mg were permitted.

The changes in the target tophus area and crystal volume at month 6 were compared, and patients who completed this phase were invited into a 6-month extension. In the 6-month extension, 75 mg AR882 was additionally provided to those who had been in the single-agent allopurinol arm. The other arms were unchanged.

Tophi measurements were performed with calipers at regular intervals. Change from baseline in sUA levels was also an efficacy measure, according to Robert Keenan, MD, chief medical officer of Arthrosi Therapeutics, which is developing AR882.

From average baseline sUA levels of > 9 mg/dL, all three treatments reduced sUA levels by an average of at least 4.5 mg by month 3. At month 6, complete resolution of at least one target tophus was observed in 29% of the group randomized to receive 75 mg AR882 alone, 8% of those randomized to receive 50 mg AR882 plus allopurinol, and 8% of those on allopurinol alone.

At month 12, the average sUA levels were 4.3 mg/dL for 75 mg AR882, 3.7 mg/dL for 50 mg AR882 plus allopurinol, and 2.9 mg/dL for the 75 mg AR882 plus allopurinol extension-switch arm.

At the 12-month mark, the proportions of patients with complete resolution of any tophus were 50.0% for 75 mg AR882, 12.5% for 50 mg AR882 plus allopurinol, and 36.4% for the 75 mg AR882 plus allopurinol extension-switch arm, according to Dr. Keenan.

Compared with allopurinol alone at 6 months, 75 mg AR882 led to a reduction in total urate crystal volume, and this reduction was sustained at 12 months, he added.

Alone or in combination with allopurinol, AR882 was well tolerated. Gout flares were the most common adverse events, but they declined with continued AR882 treatment, according to Dr. Keenan. Diarrhea, headache, and upper respiratory infections were reported but were of mild or moderate severity.

Again, the take-home message from this study, like the other phase 2 study of a novel URAT1 inhibitor, is that these newer drugs might offer a better benefit-to-risk ratio, particularly in those with refractory disease.

“AR882 may offer improved efficacy and better safety compared to existing therapies in the treatment of patients with gout, including those with both clinically visible and subclinical crystal deposition,” Dr. Keenan said.

Dr. Baraf reported financial relationships with Horizon Therapeutics, Fresenius Kabi, Grünenthal, Olatec, Selecta Biosciences, and Sobi, which provided funding for the trials he discussed. Dr. Kivitz also reported a financial relationship with Sobi, which funded the DISSOLVE trials, along with AbbVie, Amgen, Eli Lilly, Flexion, GlaxoSmithKline, and Sanofi Regeneron. Dr. Ding reported no potential conflicts. The study she discussed was funded by Jiangsu Hengrui Pharmaceuticals. Dr. Keenan is an employee of Arthrosi Therapeutics, which provided funding for the trial he presented.

August 1, 2024 — Editor's note: This article has been updated to reflect the correct number of infusion reactions reported in the 6-month extension phase of the DISSOLVE I trial.

A version of this article appeared on Medscape.com.

VIENNA — Safe and effective options for lowering serum uric acid (sUA) in patients with gout who are refractory to conventional therapies appear to be near, judging from phase 2 and 3 trials that produced positive results at the annual European Congress of Rheumatology.

Reports from the meeting included two phase 2 studies with novel urate anion transporter 1 (URAT1) inhibitors for patients with refractory gout, in addition to extension data from the phase 3 trial program for SEL-212. In all cases, efficacy appeared to be on the same order of currently available drugs with potentially better tolerability, an important unmet need for patients with gout refractory to traditional therapies.
 

12-Month Outcomes With SEL-212

The extension data with SEL-212 follow the 6-month results presented from the DISSOLVE I and II trials at EULAR 2023. Now at 12 months, the benefits have proven to be generally sustained with no new safety signals, according to Herbert S.B. Baraf, MD, The Center for Rheumatology and Bone Research, Wheaton, Maryland.

Arthritis Foundation

SEL-212 is a drug platform involving two components delivered by intravenous infusion once monthly in sequence. The first, SEL-110, consists of tolerogenic nanoparticles containing sirolimus. The second, SEL-037, is the pegylated uricase pegadricase.

On the 1-month dosing schedule, most patients who had responded at 6 months were still responding at 12 months, and both of the two study doses of SEL-212 in the DISSOLVE trials were well tolerated over the extension, Dr. Baraf reported.

On the basis of the data so far, “this will be an effective and well tolerated therapy for refractory gout over a period of at least 12 months,” Dr. Baraf said.

The DISSOLVE I and II trials were identically designed. Patients with refractory gout, defined as failure to normalize sUA or control symptoms with a xanthine oxidase inhibitor, were randomly assigned to receive 0.15 mg SEL-212, 1.0 mg SEL-212, or placebo.

There was a stopping rule for patients who reached a sUA level < 2 mg/dL 1 hour after the infusion.

The primary endpoint was sUA level < 6 mg/dL for at least 80% of the sixth month of the 6-month trial. About 50% of patients on either dose of SEL-212 met this endpoint (vs 4% of those receiving placebo; P < .0001). There was a numerical advantage for the higher dose in both studies.

Patients who completed the 6-month trial were eligible for a 6-month extension, during which they remained on their assigned therapy, including placebo. This phase was also blinded. Patients who met the stopping rule in either the main study or extension did not take the study drug but remained in the study for final analysis.

Of the 265 patients who participated in the main phase of the study, 143 (54%) completed the 6-month extension. Most discontinuations were the result of the stopping rule. Reasons for other patients discontinuing the study included withdrawal of consent in about 10% of each treatment arm and adverse events in 13.8%, 6.8%, and 2.2% of the high-dose, low-dose, and placebo groups, respectively.

At 12 months, when the data from the two trials were pooled, the proportion of patients on therapy and responding remained at about 50% in the high-dose group and 43% in the low-dose group on an intention-to-treat analysis. Relative to the 8% response rate for placebo, the advantage for either dose was highly significant (P < .0001).

In the subgroup of patients with tophi at baseline, representing about half the study group, responses were low at 12 months, whether on high- (41%) or low-dose (43%) SEL-212. The rate of response among placebo patients with baseline tophi was 9%.
 

Safety of SEL-212

The safety over the 6-month extension did not differ substantially from that observed during the first 6 months, according to Dr. Baraf. This was reiterated in more detail by Alan Kivitz, MD, Altoona Center for Clinical Research, Duncansville, Pennsylvania. He delivered a separate safety presentation focused on DISSOLVE I.

Specifically, there were no serious adverse events thought to be related to treatment. Besides gout flares, which affected approximately 27% of patients regardless of active treatment or placebo assignment, the most common adverse effect was hypertriglyceridemia, which was observed in 5.4% of patients on active treatment vs 0% of those receiving placebo. Independent of the treatment arm, less than 5% of patients developed stomatitis or cellulitis during the 6-month extension period.

In the 6-month extension phase, there were no infusion reactions observed within 1 hour after SEL-212 administration and just two overall that occurred with low-dose SEL-212, according to Kivitz.

New Selective URAT1 Inhibitors

The other potential advance in the treatment of refractory gout is coming from newer selective URAT1 inhibitors. According to the lead investigators of two phase 2 trials evaluating a novel URAT1 inhibitor, the urate transporter protein has long been considered the most promising target for gout treatment. As this protein regulates the absorption of uric acid from the renal tubule, it has a direct uric acid–lowering effect. However, the adverse events of current agents, such as probenecid, benzbromarone, and sulfinpyrazone, have created a need for drugs with a better benefit-to-risk ratio.

In one of two multicenter phase 2 studies on refractory gout, the experimental agent ruzinurad was tested as an adjunct to the xanthine oxidase inhibitor febuxostat. In the other, the objective was to evaluate whether the experimental agent AR882 or AR882 plus allopurinol is better than allopurinol alone for reducing tophi at 12 months.
 

Ruzinurad Plus Febuxostat

In the ruzinurad trial, 151 patients with symptomatic gout and elevated sUA (> 6 mg/dL) for at least 6 weeks on stable doses of febuxostat were randomized to receive 5 mg ruzinurad, 10 mg ruzinurad, or placebo. All remained on febuxostat. In the active treatment arms, the starting ruzinurad dose was 1 mg before titrating up to the assigned target.

For the primary endpoint of sUA < 6 mg/dL at 12 weeks, the rates were 56.9%, 53.1%, and 13.7% in the high-dose, low-dose, and placebo groups, respectively (P < .0001 for both ruzinurad arms), reported Huihua Ding, MD, a clinician and researcher at Shanghai Jiao Tong University, Shanghai, China.

“Consistently, subgroup analyses based on baseline eGFR [estimated glomerular filtration rate], sUA, and tophus demonstrated superior effective of ruzinurad plus febuxostat over placebo plus febuxostat,” reported Dr. Ding, who noted that previous clinical studies suggested the potential for synergism between ruzinurad and febuxostat.

The proportion of patients achieving the more rigorous target of < 0.5 mg/dL was also higher with the higher and lower doses of ruzinurad vs placebo (43.1% and 38.8% vs 9.8%, respectively).

The proportion of patients with treatment-emergent side effects did not differ between the three groups. The most common were gout flares, which were observed in 39.2%, 49.0%, and 45.1% in the high-dose, low-dose, and placebo groups, respectively. Most adverse events were mild or moderate, and none led to treatment discontinuation.

The favorable benefit-to-risk profile of ruzinurad was attributed by Dr. Ding to its high relative selectivity and potent inhibition of URAT1, an advantage that might be relevant to avoiding side effects at higher doses.

AR882 in Patients With Tophi

In the trial with AR882, 42 patients with refractory gout and at least one subcutaneous tophus were randomized to receive 75 mg AR882, 50 mg AR882 plus allopurinol, or allopurinol alone. All drugs were taken once daily. Doses of allopurinol of up to 300 mg were permitted.

The changes in the target tophus area and crystal volume at month 6 were compared, and patients who completed this phase were invited into a 6-month extension. In the 6-month extension, 75 mg AR882 was additionally provided to those who had been in the single-agent allopurinol arm. The other arms were unchanged.

Tophi measurements were performed with calipers at regular intervals. Change from baseline in sUA levels was also an efficacy measure, according to Robert Keenan, MD, chief medical officer of Arthrosi Therapeutics, which is developing AR882.

From average baseline sUA levels of > 9 mg/dL, all three treatments reduced sUA levels by an average of at least 4.5 mg by month 3. At month 6, complete resolution of at least one target tophus was observed in 29% of the group randomized to receive 75 mg AR882 alone, 8% of those randomized to receive 50 mg AR882 plus allopurinol, and 8% of those on allopurinol alone.

At month 12, the average sUA levels were 4.3 mg/dL for 75 mg AR882, 3.7 mg/dL for 50 mg AR882 plus allopurinol, and 2.9 mg/dL for the 75 mg AR882 plus allopurinol extension-switch arm.

At the 12-month mark, the proportions of patients with complete resolution of any tophus were 50.0% for 75 mg AR882, 12.5% for 50 mg AR882 plus allopurinol, and 36.4% for the 75 mg AR882 plus allopurinol extension-switch arm, according to Dr. Keenan.

Compared with allopurinol alone at 6 months, 75 mg AR882 led to a reduction in total urate crystal volume, and this reduction was sustained at 12 months, he added.

Alone or in combination with allopurinol, AR882 was well tolerated. Gout flares were the most common adverse events, but they declined with continued AR882 treatment, according to Dr. Keenan. Diarrhea, headache, and upper respiratory infections were reported but were of mild or moderate severity.

Again, the take-home message from this study, like the other phase 2 study of a novel URAT1 inhibitor, is that these newer drugs might offer a better benefit-to-risk ratio, particularly in those with refractory disease.

“AR882 may offer improved efficacy and better safety compared to existing therapies in the treatment of patients with gout, including those with both clinically visible and subclinical crystal deposition,” Dr. Keenan said.

Dr. Baraf reported financial relationships with Horizon Therapeutics, Fresenius Kabi, Grünenthal, Olatec, Selecta Biosciences, and Sobi, which provided funding for the trials he discussed. Dr. Kivitz also reported a financial relationship with Sobi, which funded the DISSOLVE trials, along with AbbVie, Amgen, Eli Lilly, Flexion, GlaxoSmithKline, and Sanofi Regeneron. Dr. Ding reported no potential conflicts. The study she discussed was funded by Jiangsu Hengrui Pharmaceuticals. Dr. Keenan is an employee of Arthrosi Therapeutics, which provided funding for the trial he presented.

August 1, 2024 — Editor's note: This article has been updated to reflect the correct number of infusion reactions reported in the 6-month extension phase of the DISSOLVE I trial.

A version of this article appeared on Medscape.com.

VIENNA — Safe and effective options for lowering serum uric acid (sUA) in patients with gout who are refractory to conventional therapies appear to be near, judging from phase 2 and 3 trials that produced positive results at the annual European Congress of Rheumatology.

Reports from the meeting included two phase 2 studies with novel urate anion transporter 1 (URAT1) inhibitors for patients with refractory gout, in addition to extension data from the phase 3 trial program for SEL-212. In all cases, efficacy appeared to be on the same order of currently available drugs with potentially better tolerability, an important unmet need for patients with gout refractory to traditional therapies.
 

12-Month Outcomes With SEL-212

The extension data with SEL-212 follow the 6-month results presented from the DISSOLVE I and II trials at EULAR 2023. Now at 12 months, the benefits have proven to be generally sustained with no new safety signals, according to Herbert S.B. Baraf, MD, The Center for Rheumatology and Bone Research, Wheaton, Maryland.

Arthritis Foundation

SEL-212 is a drug platform involving two components delivered by intravenous infusion once monthly in sequence. The first, SEL-110, consists of tolerogenic nanoparticles containing sirolimus. The second, SEL-037, is the pegylated uricase pegadricase.

On the 1-month dosing schedule, most patients who had responded at 6 months were still responding at 12 months, and both of the two study doses of SEL-212 in the DISSOLVE trials were well tolerated over the extension, Dr. Baraf reported.

On the basis of the data so far, “this will be an effective and well tolerated therapy for refractory gout over a period of at least 12 months,” Dr. Baraf said.

The DISSOLVE I and II trials were identically designed. Patients with refractory gout, defined as failure to normalize sUA or control symptoms with a xanthine oxidase inhibitor, were randomly assigned to receive 0.15 mg SEL-212, 1.0 mg SEL-212, or placebo.

There was a stopping rule for patients who reached a sUA level < 2 mg/dL 1 hour after the infusion.

The primary endpoint was sUA level < 6 mg/dL for at least 80% of the sixth month of the 6-month trial. About 50% of patients on either dose of SEL-212 met this endpoint (vs 4% of those receiving placebo; P < .0001). There was a numerical advantage for the higher dose in both studies.

Patients who completed the 6-month trial were eligible for a 6-month extension, during which they remained on their assigned therapy, including placebo. This phase was also blinded. Patients who met the stopping rule in either the main study or extension did not take the study drug but remained in the study for final analysis.

Of the 265 patients who participated in the main phase of the study, 143 (54%) completed the 6-month extension. Most discontinuations were the result of the stopping rule. Reasons for other patients discontinuing the study included withdrawal of consent in about 10% of each treatment arm and adverse events in 13.8%, 6.8%, and 2.2% of the high-dose, low-dose, and placebo groups, respectively.

At 12 months, when the data from the two trials were pooled, the proportion of patients on therapy and responding remained at about 50% in the high-dose group and 43% in the low-dose group on an intention-to-treat analysis. Relative to the 8% response rate for placebo, the advantage for either dose was highly significant (P < .0001).

In the subgroup of patients with tophi at baseline, representing about half the study group, responses were low at 12 months, whether on high- (41%) or low-dose (43%) SEL-212. The rate of response among placebo patients with baseline tophi was 9%.
 

Safety of SEL-212

The safety over the 6-month extension did not differ substantially from that observed during the first 6 months, according to Dr. Baraf. This was reiterated in more detail by Alan Kivitz, MD, Altoona Center for Clinical Research, Duncansville, Pennsylvania. He delivered a separate safety presentation focused on DISSOLVE I.

Specifically, there were no serious adverse events thought to be related to treatment. Besides gout flares, which affected approximately 27% of patients regardless of active treatment or placebo assignment, the most common adverse effect was hypertriglyceridemia, which was observed in 5.4% of patients on active treatment vs 0% of those receiving placebo. Independent of the treatment arm, less than 5% of patients developed stomatitis or cellulitis during the 6-month extension period.

In the 6-month extension phase, there were no infusion reactions observed within 1 hour after SEL-212 administration and just two overall that occurred with low-dose SEL-212, according to Kivitz.

New Selective URAT1 Inhibitors

The other potential advance in the treatment of refractory gout is coming from newer selective URAT1 inhibitors. According to the lead investigators of two phase 2 trials evaluating a novel URAT1 inhibitor, the urate transporter protein has long been considered the most promising target for gout treatment. As this protein regulates the absorption of uric acid from the renal tubule, it has a direct uric acid–lowering effect. However, the adverse events of current agents, such as probenecid, benzbromarone, and sulfinpyrazone, have created a need for drugs with a better benefit-to-risk ratio.

In one of two multicenter phase 2 studies on refractory gout, the experimental agent ruzinurad was tested as an adjunct to the xanthine oxidase inhibitor febuxostat. In the other, the objective was to evaluate whether the experimental agent AR882 or AR882 plus allopurinol is better than allopurinol alone for reducing tophi at 12 months.
 

Ruzinurad Plus Febuxostat

In the ruzinurad trial, 151 patients with symptomatic gout and elevated sUA (> 6 mg/dL) for at least 6 weeks on stable doses of febuxostat were randomized to receive 5 mg ruzinurad, 10 mg ruzinurad, or placebo. All remained on febuxostat. In the active treatment arms, the starting ruzinurad dose was 1 mg before titrating up to the assigned target.

For the primary endpoint of sUA < 6 mg/dL at 12 weeks, the rates were 56.9%, 53.1%, and 13.7% in the high-dose, low-dose, and placebo groups, respectively (P < .0001 for both ruzinurad arms), reported Huihua Ding, MD, a clinician and researcher at Shanghai Jiao Tong University, Shanghai, China.

“Consistently, subgroup analyses based on baseline eGFR [estimated glomerular filtration rate], sUA, and tophus demonstrated superior effective of ruzinurad plus febuxostat over placebo plus febuxostat,” reported Dr. Ding, who noted that previous clinical studies suggested the potential for synergism between ruzinurad and febuxostat.

The proportion of patients achieving the more rigorous target of < 0.5 mg/dL was also higher with the higher and lower doses of ruzinurad vs placebo (43.1% and 38.8% vs 9.8%, respectively).

The proportion of patients with treatment-emergent side effects did not differ between the three groups. The most common were gout flares, which were observed in 39.2%, 49.0%, and 45.1% in the high-dose, low-dose, and placebo groups, respectively. Most adverse events were mild or moderate, and none led to treatment discontinuation.

The favorable benefit-to-risk profile of ruzinurad was attributed by Dr. Ding to its high relative selectivity and potent inhibition of URAT1, an advantage that might be relevant to avoiding side effects at higher doses.

AR882 in Patients With Tophi

In the trial with AR882, 42 patients with refractory gout and at least one subcutaneous tophus were randomized to receive 75 mg AR882, 50 mg AR882 plus allopurinol, or allopurinol alone. All drugs were taken once daily. Doses of allopurinol of up to 300 mg were permitted.

The changes in the target tophus area and crystal volume at month 6 were compared, and patients who completed this phase were invited into a 6-month extension. In the 6-month extension, 75 mg AR882 was additionally provided to those who had been in the single-agent allopurinol arm. The other arms were unchanged.

Tophi measurements were performed with calipers at regular intervals. Change from baseline in sUA levels was also an efficacy measure, according to Robert Keenan, MD, chief medical officer of Arthrosi Therapeutics, which is developing AR882.

From average baseline sUA levels of > 9 mg/dL, all three treatments reduced sUA levels by an average of at least 4.5 mg by month 3. At month 6, complete resolution of at least one target tophus was observed in 29% of the group randomized to receive 75 mg AR882 alone, 8% of those randomized to receive 50 mg AR882 plus allopurinol, and 8% of those on allopurinol alone.

At month 12, the average sUA levels were 4.3 mg/dL for 75 mg AR882, 3.7 mg/dL for 50 mg AR882 plus allopurinol, and 2.9 mg/dL for the 75 mg AR882 plus allopurinol extension-switch arm.

At the 12-month mark, the proportions of patients with complete resolution of any tophus were 50.0% for 75 mg AR882, 12.5% for 50 mg AR882 plus allopurinol, and 36.4% for the 75 mg AR882 plus allopurinol extension-switch arm, according to Dr. Keenan.

Compared with allopurinol alone at 6 months, 75 mg AR882 led to a reduction in total urate crystal volume, and this reduction was sustained at 12 months, he added.

Alone or in combination with allopurinol, AR882 was well tolerated. Gout flares were the most common adverse events, but they declined with continued AR882 treatment, according to Dr. Keenan. Diarrhea, headache, and upper respiratory infections were reported but were of mild or moderate severity.

Again, the take-home message from this study, like the other phase 2 study of a novel URAT1 inhibitor, is that these newer drugs might offer a better benefit-to-risk ratio, particularly in those with refractory disease.

“AR882 may offer improved efficacy and better safety compared to existing therapies in the treatment of patients with gout, including those with both clinically visible and subclinical crystal deposition,” Dr. Keenan said.

Dr. Baraf reported financial relationships with Horizon Therapeutics, Fresenius Kabi, Grünenthal, Olatec, Selecta Biosciences, and Sobi, which provided funding for the trials he discussed. Dr. Kivitz also reported a financial relationship with Sobi, which funded the DISSOLVE trials, along with AbbVie, Amgen, Eli Lilly, Flexion, GlaxoSmithKline, and Sanofi Regeneron. Dr. Ding reported no potential conflicts. The study she discussed was funded by Jiangsu Hengrui Pharmaceuticals. Dr. Keenan is an employee of Arthrosi Therapeutics, which provided funding for the trial he presented.

August 1, 2024 — Editor's note: This article has been updated to reflect the correct number of infusion reactions reported in the 6-month extension phase of the DISSOLVE I trial.

A version of this article appeared on Medscape.com.

VIENNA — From a dozen or so studies and sessions devoted to the role of chimeric antigen receptor (CAR) T cells in rheumatic diseases at the annual European Congress of Rheumatology, the message was uniformly positive, supporting growing evidence that drugs in this class are heading toward a paradigm shift in refractory rheumatic diseases.

Of the reports, an update from a 15-patient case series with at least 1 year of follow-up provides “the first long-term evidence of safety and efficacy in multiple rheumatic diseases,” according to Georg Schett, MD, PhD, director of rheumatology and immunology, University of Erlangen-Nürnberg, Erlangen, Germany.

Ted Bosworth/Medscape Medical News

The report of high rates of activity and low relative risk of serious adverse events from the same series was published earlier this year in The New England Journal of Medicine when the median follow-up was 15 months. Almost all of the patients have now completed at least 1 year of follow-up and about a third have completed more than 2 years.
 

SLE Is Frequently Targeted in CAR T-Cell Studies

The three rheumatic diseases represented in this series of patients, all of whom had failed multiple previous immune suppressive treatments, were systemic lupus erythematosus (SLE), idiopathic inflammatory myositis (IIM), and systemic sclerosis (SSc). After the autologous T cells were harvested, they were expanded and transfected with the CD19 CAR. The proprietary investigational product, called MB-CART19.1 (Miltenyi Biotec), was administered in a single dose of one million cells per kg bodyweight.

The response rates have been, and continue to be, impressive. For the eight patients with SLE, all achieved the definition of remission in SLE criteria after one dose of treatment. Complete resolution of all major symptom types was achieved after 6 months of follow-up. So far, no patient has relapsed.

For the three patients with IIM, all reached the American College of Rheumatology–EULAR criteria for a major response. All creatine kinase levels had normalized by 3 months. In this group, there was one relapse, which occurred after 18 months of follow-up.

All four patients with SSc achieved a major response on the European Scleroderma Trials and Research (EUSTAR) group activity index. The median reduction from baseline in the EUSTAR score was 4.2 points, and this has been maintained in follow-up to date.
 

Remissions Have Persisted Off All Therapies

These remissions were achieved and maintained after a single dose of CAR T-cell therapy despite discontinuation of all immunosuppressive therapies. With the exception of the single relapse, all remissions have persisted through follow-up to date.

These responses were achieved with manageable side effects, according to Dr. Schett. The most serious adverse event was a grade 4 neutropenia that developed 4 months after receiving CAR T cells. It resolved with granulocyte colony-stimulating factor treatment. Cytokine release syndrome (CRS) has occurred in 10 patients, but it was grade 1 in eight patients and grade 2 in the others. There has been no neurotoxicity.

Almost all patients have experienced an infection during follow-up, but there has been no discernible pattern in relationship to the timing or types of infections. The most common have involved the upper respiratory tract and have been of mild severity, with cases disseminated similarly over early vs late follow-up. There was one case of pneumonia involving antibiotic treatment and a hospital stay, but it resolved.

Dr. Schett acknowledged that safety is a bigger concern in autoimmune diseases, which are often serious but rarely fatal, than in the hematologic malignancies for which CAR T cells were initially tested, but the low rates of serious adverse events in his and other early studies have supported the premise that the risks are not the same.

Asked specifically if CAR T cells can be considered a game changer in autoimmune rheumatic diseases, Dr. Schett was cautious. One reason is the CAR T cells are a complex therapy relative to biologic disease-modifying antirheumatic drugs. He thinks, therefore, that much more data are needed to confirm safety and efficacy. In addition, they are expensive, so it is not yet clear how they will be integrated with other options.

Yet, he thinks the evidence so far suggests a profound effect on the fundamental drivers of autoimmune disease. Their specific mechanism of benefit is still being evaluated, but he considers the clinical responses consistent with a “reset” hypothesis.

After a response, “we are seeing drug-free remissions in some patients as long as they have been followed,” Dr. Schett said. Based on the fact that disease control is being observed off all other therapies, “this only makes sense to me if there is some sort of immunologic reset.”
 

CAR T-Cell Studies in Autoimmune Diseases Are Proliferating

At last count, there were about 40 studies being performed with CAR T cells in various autoimmune diseases, most of which were rheumatologic disorders, according to Dr. Schett. He noted that funding is coming from multinational drug companies, small biotech startups, and investigator-initiated studies at academic centers.

At EULAR, beyond case studies and anecdotal reports, all of the clinical studies were still at the level of phase 1 or 1/2. Consistent with the data presented by Dr. Schett, the drugs have been nearly uniformly effective, with major responses persisting in patients off other therapies. Adverse events have been manageable.

Examples include a phase 1/2 multinational study with the investigational CAR T-cell therapy YTB323 (Novartis), which demonstrated acceptable safety and a strong signal of benefit in six patients with SLE. In this report, CRS was also common, but no case of CRS was more severe than grade 2. There was no neurotoxicity. Infections did occur but were of relatively mild grades and resolved with treatment.

For efficacy in the ongoing follow-up, SLE symptoms as measured with the SLE Disease Activity Index began to abate at about 14 days after the single-infusion treatment. Improvement on the Physician Global Assessment was also observed between 14 and 28 days. C3 and C4 complement levels started to rise at about 28 days. While the responses have correlated with the observed changes in biomarkers of immune function, they have endured through a median follow-up that now exceeds 6 months.
 

Complete B-Cell Depletion Is Followed by Full Recovery

“Pharmacokinetic and pharmacodynamic studies revealed peak expansion of CAR T cells approximately 13-21 days post infusion, which was accompanied by deep B-cell depletion followed by subsequent B-cell recovery,” reported Josefina Cortés-Hernández, MD, PhD, a senior lecturer at Vall d’Hebron Research Institute, Barcelona, Spain.

Dr. Schett had reported the same pattern of expansion followed by a rapid elimination of detectable CAR T cells despite the sustained clinical benefit.

Dr. Cortés-Hernández said that the signal of efficacy in the context of acceptable safety supports an expansion of clinical studies with this CAR T-cell product in SLE and perhaps other autoimmune disorders.

In another early-stage study, patients with SLE who had failed multiple prior lines of therapy have been enrolled in an ongoing study with a compound CAR (cCAR) T cell. This experimental proprietary product (iCAR Bio Therapeutics, Zhongshan, China) targets both the B-cell maturation antigen and CD19, according to Greg Deener, the chief executive officer of iCell Gene Therapeutics, New York City.

Ted Bosworth/Medscape Medical News

cCAR T-Cell Construct Targets Immune Reset

With this construct, the goal is to deplete long-lived plasma cells as well as B cells in order to achieve a more complete humoral reset. While preliminary data from the phase 1 trial were published earlier this year in Annals of the Rheumatic Diseases, Mr. Deener focused his presentation at EULAR 2024 on 12 patients with SLE and lupus nephritis, a severe form of SLE that threatens glomerular structures and can lead to end-stage liver disease.

B cells in the peripheral blood could not be detected within 10 days of the cCAR infusion, and the immunoglobulins IgM and IgA were undetectable by day 42.

However, after B-cell recovery by day 150, “flow cytometry and B-cell receptor sequencing confirmed full humoral reset was achieved,” Mr. Deener said.

The remission has been durable in 11 of the 12 patients after a mean follow-up of 458 days, Mr. Deener reported. He noted that an improvement in renal function has been observed in the majority of patients.

Like others, he reported that treatment has been relatively well tolerated. In this series of patients, there have been no cases of CRS more severe than grade 1.

Overall, the cCAR data in lupus nephritis support the hypothesis that CAR T cells are reprogramming the immune system, according to Mr. Deener.

Combined with a reasonable safety profile, the consistency of benefit from CAR T cells in autoimmune rheumatic diseases is good news, but all of the investigators who spoke at EULAR agreed that there are still many unanswered questions. Not least, it is unclear whether patients can be effectively and safely retreated when and if relapses occur. Even though Dr. Schett did report a response with retreatment following a relapse, he said that there is no conclusion to draw from a single patient.

Yet, the high rates of remissions in patients with disease refractory to other therapeutic options is highly encouraging, particularly with the manageable side effects now reported by multiple investigators using different CAR T-cell products.

“Roughly 100 patients with rheumatic diseases have been treated with CAR T-cells, and we have not seen a high-grade CRS or neurotoxicity,” he said.

Long-term efficacy is less clear. With the first clinical studies in autoimmune diseases initiated in 2021, few patients have been followed for more than 2 years. Even with the high rates of response that will certainly fuel efforts to rapidly bring these treatments forward, long-term data are now the missing piece.
 

Other Case Series Presented at EULAR

Several other abstracts reported on patients with SSc who were treated with CD19-targeting CAR T cells:

Three patients for whom autologous hematopoietic stem cell transplantation was contraindicated or unsuccessful were successfully and safely treated.

Six patients with diffuse and progressive disease achieved stable disease activity without additional immunosuppression for up to 1 year after treatment.

Dr. Schett reported no potential conflicts of interest, and the study he presented was not funded by industry. Dr. Cortés-Hernández reported a financial relationship with Novartis, which funded the study of the CAR T-cell therapy YTB323, as well as with GlaxoSmithKline, which was not involved in the study she presented.  Mr. Deener is an employee of iCell Gene Therapeutics, which provided funding for the trial he presented.

August 7, 2024 — Editor's note: This article was updated with additional disclosure information for Dr. Josefina Cortés-Hernández.

A version of this article appeared on Medscape.com.

VIENNA — From a dozen or so studies and sessions devoted to the role of chimeric antigen receptor (CAR) T cells in rheumatic diseases at the annual European Congress of Rheumatology, the message was uniformly positive, supporting growing evidence that drugs in this class are heading toward a paradigm shift in refractory rheumatic diseases.

Of the reports, an update from a 15-patient case series with at least 1 year of follow-up provides “the first long-term evidence of safety and efficacy in multiple rheumatic diseases,” according to Georg Schett, MD, PhD, director of rheumatology and immunology, University of Erlangen-Nürnberg, Erlangen, Germany.

Ted Bosworth/Medscape Medical News

The report of high rates of activity and low relative risk of serious adverse events from the same series was published earlier this year in The New England Journal of Medicine when the median follow-up was 15 months. Almost all of the patients have now completed at least 1 year of follow-up and about a third have completed more than 2 years.
 

SLE Is Frequently Targeted in CAR T-Cell Studies

The three rheumatic diseases represented in this series of patients, all of whom had failed multiple previous immune suppressive treatments, were systemic lupus erythematosus (SLE), idiopathic inflammatory myositis (IIM), and systemic sclerosis (SSc). After the autologous T cells were harvested, they were expanded and transfected with the CD19 CAR. The proprietary investigational product, called MB-CART19.1 (Miltenyi Biotec), was administered in a single dose of one million cells per kg bodyweight.

The response rates have been, and continue to be, impressive. For the eight patients with SLE, all achieved the definition of remission in SLE criteria after one dose of treatment. Complete resolution of all major symptom types was achieved after 6 months of follow-up. So far, no patient has relapsed.

For the three patients with IIM, all reached the American College of Rheumatology–EULAR criteria for a major response. All creatine kinase levels had normalized by 3 months. In this group, there was one relapse, which occurred after 18 months of follow-up.

All four patients with SSc achieved a major response on the European Scleroderma Trials and Research (EUSTAR) group activity index. The median reduction from baseline in the EUSTAR score was 4.2 points, and this has been maintained in follow-up to date.
 

Remissions Have Persisted Off All Therapies

These remissions were achieved and maintained after a single dose of CAR T-cell therapy despite discontinuation of all immunosuppressive therapies. With the exception of the single relapse, all remissions have persisted through follow-up to date.

These responses were achieved with manageable side effects, according to Dr. Schett. The most serious adverse event was a grade 4 neutropenia that developed 4 months after receiving CAR T cells. It resolved with granulocyte colony-stimulating factor treatment. Cytokine release syndrome (CRS) has occurred in 10 patients, but it was grade 1 in eight patients and grade 2 in the others. There has been no neurotoxicity.

Almost all patients have experienced an infection during follow-up, but there has been no discernible pattern in relationship to the timing or types of infections. The most common have involved the upper respiratory tract and have been of mild severity, with cases disseminated similarly over early vs late follow-up. There was one case of pneumonia involving antibiotic treatment and a hospital stay, but it resolved.

Dr. Schett acknowledged that safety is a bigger concern in autoimmune diseases, which are often serious but rarely fatal, than in the hematologic malignancies for which CAR T cells were initially tested, but the low rates of serious adverse events in his and other early studies have supported the premise that the risks are not the same.

Asked specifically if CAR T cells can be considered a game changer in autoimmune rheumatic diseases, Dr. Schett was cautious. One reason is the CAR T cells are a complex therapy relative to biologic disease-modifying antirheumatic drugs. He thinks, therefore, that much more data are needed to confirm safety and efficacy. In addition, they are expensive, so it is not yet clear how they will be integrated with other options.

Yet, he thinks the evidence so far suggests a profound effect on the fundamental drivers of autoimmune disease. Their specific mechanism of benefit is still being evaluated, but he considers the clinical responses consistent with a “reset” hypothesis.

After a response, “we are seeing drug-free remissions in some patients as long as they have been followed,” Dr. Schett said. Based on the fact that disease control is being observed off all other therapies, “this only makes sense to me if there is some sort of immunologic reset.”
 

CAR T-Cell Studies in Autoimmune Diseases Are Proliferating

At last count, there were about 40 studies being performed with CAR T cells in various autoimmune diseases, most of which were rheumatologic disorders, according to Dr. Schett. He noted that funding is coming from multinational drug companies, small biotech startups, and investigator-initiated studies at academic centers.

At EULAR, beyond case studies and anecdotal reports, all of the clinical studies were still at the level of phase 1 or 1/2. Consistent with the data presented by Dr. Schett, the drugs have been nearly uniformly effective, with major responses persisting in patients off other therapies. Adverse events have been manageable.

Examples include a phase 1/2 multinational study with the investigational CAR T-cell therapy YTB323 (Novartis), which demonstrated acceptable safety and a strong signal of benefit in six patients with SLE. In this report, CRS was also common, but no case of CRS was more severe than grade 2. There was no neurotoxicity. Infections did occur but were of relatively mild grades and resolved with treatment.

For efficacy in the ongoing follow-up, SLE symptoms as measured with the SLE Disease Activity Index began to abate at about 14 days after the single-infusion treatment. Improvement on the Physician Global Assessment was also observed between 14 and 28 days. C3 and C4 complement levels started to rise at about 28 days. While the responses have correlated with the observed changes in biomarkers of immune function, they have endured through a median follow-up that now exceeds 6 months.
 

Complete B-Cell Depletion Is Followed by Full Recovery

“Pharmacokinetic and pharmacodynamic studies revealed peak expansion of CAR T cells approximately 13-21 days post infusion, which was accompanied by deep B-cell depletion followed by subsequent B-cell recovery,” reported Josefina Cortés-Hernández, MD, PhD, a senior lecturer at Vall d’Hebron Research Institute, Barcelona, Spain.

Dr. Schett had reported the same pattern of expansion followed by a rapid elimination of detectable CAR T cells despite the sustained clinical benefit.

Dr. Cortés-Hernández said that the signal of efficacy in the context of acceptable safety supports an expansion of clinical studies with this CAR T-cell product in SLE and perhaps other autoimmune disorders.

In another early-stage study, patients with SLE who had failed multiple prior lines of therapy have been enrolled in an ongoing study with a compound CAR (cCAR) T cell. This experimental proprietary product (iCAR Bio Therapeutics, Zhongshan, China) targets both the B-cell maturation antigen and CD19, according to Greg Deener, the chief executive officer of iCell Gene Therapeutics, New York City.

Ted Bosworth/Medscape Medical News

cCAR T-Cell Construct Targets Immune Reset

With this construct, the goal is to deplete long-lived plasma cells as well as B cells in order to achieve a more complete humoral reset. While preliminary data from the phase 1 trial were published earlier this year in Annals of the Rheumatic Diseases, Mr. Deener focused his presentation at EULAR 2024 on 12 patients with SLE and lupus nephritis, a severe form of SLE that threatens glomerular structures and can lead to end-stage liver disease.

B cells in the peripheral blood could not be detected within 10 days of the cCAR infusion, and the immunoglobulins IgM and IgA were undetectable by day 42.

However, after B-cell recovery by day 150, “flow cytometry and B-cell receptor sequencing confirmed full humoral reset was achieved,” Mr. Deener said.

The remission has been durable in 11 of the 12 patients after a mean follow-up of 458 days, Mr. Deener reported. He noted that an improvement in renal function has been observed in the majority of patients.

Like others, he reported that treatment has been relatively well tolerated. In this series of patients, there have been no cases of CRS more severe than grade 1.

Overall, the cCAR data in lupus nephritis support the hypothesis that CAR T cells are reprogramming the immune system, according to Mr. Deener.

Combined with a reasonable safety profile, the consistency of benefit from CAR T cells in autoimmune rheumatic diseases is good news, but all of the investigators who spoke at EULAR agreed that there are still many unanswered questions. Not least, it is unclear whether patients can be effectively and safely retreated when and if relapses occur. Even though Dr. Schett did report a response with retreatment following a relapse, he said that there is no conclusion to draw from a single patient.

Yet, the high rates of remissions in patients with disease refractory to other therapeutic options is highly encouraging, particularly with the manageable side effects now reported by multiple investigators using different CAR T-cell products.

“Roughly 100 patients with rheumatic diseases have been treated with CAR T-cells, and we have not seen a high-grade CRS or neurotoxicity,” he said.

Long-term efficacy is less clear. With the first clinical studies in autoimmune diseases initiated in 2021, few patients have been followed for more than 2 years. Even with the high rates of response that will certainly fuel efforts to rapidly bring these treatments forward, long-term data are now the missing piece.
 

Other Case Series Presented at EULAR

Several other abstracts reported on patients with SSc who were treated with CD19-targeting CAR T cells:

Three patients for whom autologous hematopoietic stem cell transplantation was contraindicated or unsuccessful were successfully and safely treated.

Six patients with diffuse and progressive disease achieved stable disease activity without additional immunosuppression for up to 1 year after treatment.

Dr. Schett reported no potential conflicts of interest, and the study he presented was not funded by industry. Dr. Cortés-Hernández reported a financial relationship with Novartis, which funded the study of the CAR T-cell therapy YTB323, as well as with GlaxoSmithKline, which was not involved in the study she presented.  Mr. Deener is an employee of iCell Gene Therapeutics, which provided funding for the trial he presented.

August 7, 2024 — Editor's note: This article was updated with additional disclosure information for Dr. Josefina Cortés-Hernández.

A version of this article appeared on Medscape.com.

VIENNA — From a dozen or so studies and sessions devoted to the role of chimeric antigen receptor (CAR) T cells in rheumatic diseases at the annual European Congress of Rheumatology, the message was uniformly positive, supporting growing evidence that drugs in this class are heading toward a paradigm shift in refractory rheumatic diseases.

Of the reports, an update from a 15-patient case series with at least 1 year of follow-up provides “the first long-term evidence of safety and efficacy in multiple rheumatic diseases,” according to Georg Schett, MD, PhD, director of rheumatology and immunology, University of Erlangen-Nürnberg, Erlangen, Germany.

Ted Bosworth/Medscape Medical News

The report of high rates of activity and low relative risk of serious adverse events from the same series was published earlier this year in The New England Journal of Medicine when the median follow-up was 15 months. Almost all of the patients have now completed at least 1 year of follow-up and about a third have completed more than 2 years.
 

SLE Is Frequently Targeted in CAR T-Cell Studies

The three rheumatic diseases represented in this series of patients, all of whom had failed multiple previous immune suppressive treatments, were systemic lupus erythematosus (SLE), idiopathic inflammatory myositis (IIM), and systemic sclerosis (SSc). After the autologous T cells were harvested, they were expanded and transfected with the CD19 CAR. The proprietary investigational product, called MB-CART19.1 (Miltenyi Biotec), was administered in a single dose of one million cells per kg bodyweight.

The response rates have been, and continue to be, impressive. For the eight patients with SLE, all achieved the definition of remission in SLE criteria after one dose of treatment. Complete resolution of all major symptom types was achieved after 6 months of follow-up. So far, no patient has relapsed.

For the three patients with IIM, all reached the American College of Rheumatology–EULAR criteria for a major response. All creatine kinase levels had normalized by 3 months. In this group, there was one relapse, which occurred after 18 months of follow-up.

All four patients with SSc achieved a major response on the European Scleroderma Trials and Research (EUSTAR) group activity index. The median reduction from baseline in the EUSTAR score was 4.2 points, and this has been maintained in follow-up to date.
 

Remissions Have Persisted Off All Therapies

These remissions were achieved and maintained after a single dose of CAR T-cell therapy despite discontinuation of all immunosuppressive therapies. With the exception of the single relapse, all remissions have persisted through follow-up to date.

These responses were achieved with manageable side effects, according to Dr. Schett. The most serious adverse event was a grade 4 neutropenia that developed 4 months after receiving CAR T cells. It resolved with granulocyte colony-stimulating factor treatment. Cytokine release syndrome (CRS) has occurred in 10 patients, but it was grade 1 in eight patients and grade 2 in the others. There has been no neurotoxicity.

Almost all patients have experienced an infection during follow-up, but there has been no discernible pattern in relationship to the timing or types of infections. The most common have involved the upper respiratory tract and have been of mild severity, with cases disseminated similarly over early vs late follow-up. There was one case of pneumonia involving antibiotic treatment and a hospital stay, but it resolved.

Dr. Schett acknowledged that safety is a bigger concern in autoimmune diseases, which are often serious but rarely fatal, than in the hematologic malignancies for which CAR T cells were initially tested, but the low rates of serious adverse events in his and other early studies have supported the premise that the risks are not the same.

Asked specifically if CAR T cells can be considered a game changer in autoimmune rheumatic diseases, Dr. Schett was cautious. One reason is the CAR T cells are a complex therapy relative to biologic disease-modifying antirheumatic drugs. He thinks, therefore, that much more data are needed to confirm safety and efficacy. In addition, they are expensive, so it is not yet clear how they will be integrated with other options.

Yet, he thinks the evidence so far suggests a profound effect on the fundamental drivers of autoimmune disease. Their specific mechanism of benefit is still being evaluated, but he considers the clinical responses consistent with a “reset” hypothesis.

After a response, “we are seeing drug-free remissions in some patients as long as they have been followed,” Dr. Schett said. Based on the fact that disease control is being observed off all other therapies, “this only makes sense to me if there is some sort of immunologic reset.”
 

CAR T-Cell Studies in Autoimmune Diseases Are Proliferating

At last count, there were about 40 studies being performed with CAR T cells in various autoimmune diseases, most of which were rheumatologic disorders, according to Dr. Schett. He noted that funding is coming from multinational drug companies, small biotech startups, and investigator-initiated studies at academic centers.

At EULAR, beyond case studies and anecdotal reports, all of the clinical studies were still at the level of phase 1 or 1/2. Consistent with the data presented by Dr. Schett, the drugs have been nearly uniformly effective, with major responses persisting in patients off other therapies. Adverse events have been manageable.

Examples include a phase 1/2 multinational study with the investigational CAR T-cell therapy YTB323 (Novartis), which demonstrated acceptable safety and a strong signal of benefit in six patients with SLE. In this report, CRS was also common, but no case of CRS was more severe than grade 2. There was no neurotoxicity. Infections did occur but were of relatively mild grades and resolved with treatment.

For efficacy in the ongoing follow-up, SLE symptoms as measured with the SLE Disease Activity Index began to abate at about 14 days after the single-infusion treatment. Improvement on the Physician Global Assessment was also observed between 14 and 28 days. C3 and C4 complement levels started to rise at about 28 days. While the responses have correlated with the observed changes in biomarkers of immune function, they have endured through a median follow-up that now exceeds 6 months.
 

Complete B-Cell Depletion Is Followed by Full Recovery

“Pharmacokinetic and pharmacodynamic studies revealed peak expansion of CAR T cells approximately 13-21 days post infusion, which was accompanied by deep B-cell depletion followed by subsequent B-cell recovery,” reported Josefina Cortés-Hernández, MD, PhD, a senior lecturer at Vall d’Hebron Research Institute, Barcelona, Spain.

Dr. Schett had reported the same pattern of expansion followed by a rapid elimination of detectable CAR T cells despite the sustained clinical benefit.

Dr. Cortés-Hernández said that the signal of efficacy in the context of acceptable safety supports an expansion of clinical studies with this CAR T-cell product in SLE and perhaps other autoimmune disorders.

In another early-stage study, patients with SLE who had failed multiple prior lines of therapy have been enrolled in an ongoing study with a compound CAR (cCAR) T cell. This experimental proprietary product (iCAR Bio Therapeutics, Zhongshan, China) targets both the B-cell maturation antigen and CD19, according to Greg Deener, the chief executive officer of iCell Gene Therapeutics, New York City.

Ted Bosworth/Medscape Medical News

cCAR T-Cell Construct Targets Immune Reset

With this construct, the goal is to deplete long-lived plasma cells as well as B cells in order to achieve a more complete humoral reset. While preliminary data from the phase 1 trial were published earlier this year in Annals of the Rheumatic Diseases, Mr. Deener focused his presentation at EULAR 2024 on 12 patients with SLE and lupus nephritis, a severe form of SLE that threatens glomerular structures and can lead to end-stage liver disease.

B cells in the peripheral blood could not be detected within 10 days of the cCAR infusion, and the immunoglobulins IgM and IgA were undetectable by day 42.

However, after B-cell recovery by day 150, “flow cytometry and B-cell receptor sequencing confirmed full humoral reset was achieved,” Mr. Deener said.

The remission has been durable in 11 of the 12 patients after a mean follow-up of 458 days, Mr. Deener reported. He noted that an improvement in renal function has been observed in the majority of patients.

Like others, he reported that treatment has been relatively well tolerated. In this series of patients, there have been no cases of CRS more severe than grade 1.

Overall, the cCAR data in lupus nephritis support the hypothesis that CAR T cells are reprogramming the immune system, according to Mr. Deener.

Combined with a reasonable safety profile, the consistency of benefit from CAR T cells in autoimmune rheumatic diseases is good news, but all of the investigators who spoke at EULAR agreed that there are still many unanswered questions. Not least, it is unclear whether patients can be effectively and safely retreated when and if relapses occur. Even though Dr. Schett did report a response with retreatment following a relapse, he said that there is no conclusion to draw from a single patient.

Yet, the high rates of remissions in patients with disease refractory to other therapeutic options is highly encouraging, particularly with the manageable side effects now reported by multiple investigators using different CAR T-cell products.

“Roughly 100 patients with rheumatic diseases have been treated with CAR T-cells, and we have not seen a high-grade CRS or neurotoxicity,” he said.

Long-term efficacy is less clear. With the first clinical studies in autoimmune diseases initiated in 2021, few patients have been followed for more than 2 years. Even with the high rates of response that will certainly fuel efforts to rapidly bring these treatments forward, long-term data are now the missing piece.
 

Other Case Series Presented at EULAR

Several other abstracts reported on patients with SSc who were treated with CD19-targeting CAR T cells:

Three patients for whom autologous hematopoietic stem cell transplantation was contraindicated or unsuccessful were successfully and safely treated.

Six patients with diffuse and progressive disease achieved stable disease activity without additional immunosuppression for up to 1 year after treatment.

Dr. Schett reported no potential conflicts of interest, and the study he presented was not funded by industry. Dr. Cortés-Hernández reported a financial relationship with Novartis, which funded the study of the CAR T-cell therapy YTB323, as well as with GlaxoSmithKline, which was not involved in the study she presented.  Mr. Deener is an employee of iCell Gene Therapeutics, which provided funding for the trial he presented.

August 7, 2024 — Editor's note: This article was updated with additional disclosure information for Dr. Josefina Cortés-Hernández.

A version of this article appeared on Medscape.com.

VIENNA — While there is no doubt that some people with psoriatic arthritis (PsA) have axial symptoms, data presented at the annual European Congress of Rheumatology do not appear to add much to what is already known about axial PsA or to further the cause of differentiating it from axial spondyloarthritis (axSpA).

In both the AXIS study and Reuma.pt, around one in three patients with PsA were found to have axial involvement. Notably, the percentage of people with axial PsA was found to vary according to how imaging information was interpreted in the AXIS study. Both studies were discussed during the Axial Involvement in PsA and SpA session at EULAR 2024.
 

The One-Million-Dollar Question

“So, the one-million-dollar question: What is it, really?” Philippe Carron, MD, PhD, Ghent University Hospital, Ghent, Belgium, said in the presentation that started the session. Despite PsA being described more than 60 years ago, “we still have no internationally accepted definition or a consensus on how we should define these patients and how we should screen them,” he said.

“There are some believers that it is just a form of axial SpA with concomitant psoriasis, but also some people that think that the axial PsA is a typical disease, with typical characteristics which are different from axial disease,” Dr. Carron said.

The lack of consensus makes it difficult to estimate just how many people have axial PsA. Reported prevalences range from 5% to 70%, “all caused by which criteria that you’re using to define axial involvement,” Dr. Carron added.

There are, however, two things that can be agreed upon, according to Dr. Carron. First, the prevalence of axial involvement in people with early PsA is “much, much lower” than that of more established disease. Second, exclusive axial involvement is seen in “just a minority of PsA patients.” Most people with axial disease also have peripheral disease, he added.

Imaging findings in axial PsA “are quite similar to those seen in axial SpA,” although Dr. Carron also said that there were some distinct differences. Radiographic sacroiliitis occurs in around 25%-50% of people with axial PsA, and atypical syndesmophytes are more often found in people with axial PsA than in those with axSpA.
 

Shared Characteristics

But are axial PsA and axSpA separate diseases or part of the same disease continuum? That’s a question that is still very much open for debate, said Sofia Ramiro, MD, PhD, a senior researcher at Leiden University Medical Center, Leiden, the Netherlands, and rheumatology consultant at Zuyderland Medical Center in Heerlen, the Netherlands.

While many studies have looked to answer this question, there is a big methodological problem — the studies largely cannot be compared as they have used different definitions of axSpA.

Take a patient with inflammatory back pain, psoriasis, and oligoarthritis, Dr. Ramiro said. If the patient goes to one rheumatologist, they may get a diagnosis of axSpA, but if they go to a different rheumatologist, they may get a diagnosis of axial PsA.

“This is influenced by training, expertise, by beliefs, and by belonging to ASAS [Assessment of Spondyloarthritis International Society] or to GRAPPA [Group for Research and Assessment of Psoriasis and Psoriatic Arthritis],” Dr. Ramiro suggested. It’s “a diagnostic bias” that is very difficult to overcome and makes direct comparisons between patient populations recruited into clinical studies “extremely challenging.”

To confuse matters more, axial PsA and axSpA share common characteristics: Inflammatory back pain, HLA-B27 positivity, elevated levels of C-reactive protein (CRP) or a higher erythrocyte sedimentation rate, and structural lesions in the sacroiliac joints and spine.
 

AXIS Study ‘Gives Answers’

More research into factors associated with axial PsA need to be performed to try to help define the condition and enable classification and ultimately treatment guidelines. This is where the AXIS study comes in.

The AXIS study is a joint project of ASAS and GRAPPA that was started in January 2019 with the aim of defining a homogeneous subgroup of patients who could be studied.

“The objectives of the AXIS study are to determine the frequency of axial involvement in patients with PsA; to identify the frequency of active inflammatory and structural changes on imaging; and to identify factors associated with the presence of axial involvement in PsA,” Murat Torgutalp, MD, of Charité – Universitätsmedizin Berlin, Berlin, Germany, said at EULAR 2024.

The study population consisted of 409 consecutively recruited patients diagnosed with PsA according to CASPAR (Classification for Psoriatic Arthritis) criteria; all have had PsA for up to 10 years and were untreated with biologic or targeted synthetic disease modifying drugs at the time of inclusion.

Dr. Torgutalp, who is the study’s primary research coordinator, reported that a diagnosis of PsA was made in 37% of the population when local investigators considered available clinical, laboratory, and imaging data. However, patients’ imaging data were also centrally assessed, and when the local investigators were party to the expert imaging interpretations, the percentage of people diagnosed with PsA dropped to 27%.

“When we looked at the clinical characteristics, the presence of the back pain, particularly inflammatory back pain, HLA-B27 positivity, elevated CRP, and presence of active, inflammatory and structural changes in the sacroiliac joints and spine were associated with the final conclusion on the presence of axial involvement,” Dr. Torgutalp said.

Despite the title of his presentation being “The Axis Study Gives Answers,” Dr. Torgutalp presented lots of data without giving much insight into how they might be used. He concluded that “overall, there was a trend toward overestimation of the presence of imaging changes indicative of axial involvement across all imaging modalities” by the local investigators.

Dennis McGonagle, MB, MCH, BAO, PhD, of the University of Leeds, Leeds, England,said in an interview that the AXIS study “is a noble, international effort across multiple countries to try and better understand axial PsA.”

Dr. McGonagle, who was not involved in the study, added: “A lot of data are being generated, and a lot of analysis needs to be done to drill down to get a clear message that could influence practice.”
 

Axial PsA in the Portuguese Population

Separately, Catarina Abreu, a rheumatology intern at Hospital Garcia de Orta, Almada, Portugal, presented some real-world data on axial PsA from Reuma.pt.

Of 2304 patients, 854 (37.1%) reportedly had axial PsA, which had been defined as physician-reported spondylitis or the presence of imaging findings suggestive of axial involvement. This included radiographic- or MRI-detected sacroiliitis or syndesmophytes seen on axial x-rays.

The majority (78.2%) of those with an axial PsA diagnosis had concomitant peripheral involvement, with 8.1% having exclusive axial disease.

About 70% of the axial PsA diagnoses had been made using clinical or laboratory findings alone, and 30% of diagnoses was based on imaging results. Of the latter, Ms. Abreu noted that patients who had imaging data available were more likely to be HLA-B27 positive and less likely to have dactylitis, with respective odds ratios (ORs) of 3.10 and 2.42.

Individuals with axial PsA were more likely to have enthesitis (OR, 1.92), although no data were available on whether this was axial or peripheral enthesitis. Tobacco exposure was also linked to an increased chance of having axial PsA (OR, 1.66).

Ms. Abreu noted that the “scarce number of available imaging exams” and other missing data in Reuma.pt may have led to an underdiagnosis of axial PsA.

“The difference that we found between axial and peripheral [PsA] are similar to the differences found in other studies that compared axial psoriatic arthritis with axial spondyloarthritis,” Ms. Abreu said.

“So, we leave with the question that was already left before here: If these are different diseases or just different phenotypes of the same disease, and what implications will this have in the future?” Ms. Abreu concluded.

Dr. Carron received educational grants, speaker fees, or honoraria for other consultancy work from AbbVie, UCB, Pfizer, Eli Lilly, Novartis, Janssen, and Galapagos/Alfasigma. Dr. Ramiro is an ASAS executive committee member and received research grants or consulting/speaker fees from AbbVie, Eli Lilly, Galapagos, Janssen, Merck Sharp and Dohme, Novartis, Pfizer, Sanofi, and UCB. AXIS is supported by unrestricted research grants from AbbVie, Galapagos, Janssen, Eli Lilly, Novartis, Pfizer, and UCB. Dr. Torgutalp is the primary research coordinator for the study; he reported no financial conflicts of interest. The Reuma.pt registry was developed with the financial support of the pharmaceutical industry and is currently supported by AbbVie, Amgen, AstraZeneca, Boehringer Ingelheim, Eli Lilly, Merck Sharp and Dohme, Novartis, Pfizer, and Sobi. Ms. Abreu reported no financial conflicts of interest.

A version of this article appeared on Medscape.com.

VIENNA — While there is no doubt that some people with psoriatic arthritis (PsA) have axial symptoms, data presented at the annual European Congress of Rheumatology do not appear to add much to what is already known about axial PsA or to further the cause of differentiating it from axial spondyloarthritis (axSpA).

In both the AXIS study and Reuma.pt, around one in three patients with PsA were found to have axial involvement. Notably, the percentage of people with axial PsA was found to vary according to how imaging information was interpreted in the AXIS study. Both studies were discussed during the Axial Involvement in PsA and SpA session at EULAR 2024.
 

The One-Million-Dollar Question

“So, the one-million-dollar question: What is it, really?” Philippe Carron, MD, PhD, Ghent University Hospital, Ghent, Belgium, said in the presentation that started the session. Despite PsA being described more than 60 years ago, “we still have no internationally accepted definition or a consensus on how we should define these patients and how we should screen them,” he said.

“There are some believers that it is just a form of axial SpA with concomitant psoriasis, but also some people that think that the axial PsA is a typical disease, with typical characteristics which are different from axial disease,” Dr. Carron said.

The lack of consensus makes it difficult to estimate just how many people have axial PsA. Reported prevalences range from 5% to 70%, “all caused by which criteria that you’re using to define axial involvement,” Dr. Carron added.

There are, however, two things that can be agreed upon, according to Dr. Carron. First, the prevalence of axial involvement in people with early PsA is “much, much lower” than that of more established disease. Second, exclusive axial involvement is seen in “just a minority of PsA patients.” Most people with axial disease also have peripheral disease, he added.

Imaging findings in axial PsA “are quite similar to those seen in axial SpA,” although Dr. Carron also said that there were some distinct differences. Radiographic sacroiliitis occurs in around 25%-50% of people with axial PsA, and atypical syndesmophytes are more often found in people with axial PsA than in those with axSpA.
 

Shared Characteristics

But are axial PsA and axSpA separate diseases or part of the same disease continuum? That’s a question that is still very much open for debate, said Sofia Ramiro, MD, PhD, a senior researcher at Leiden University Medical Center, Leiden, the Netherlands, and rheumatology consultant at Zuyderland Medical Center in Heerlen, the Netherlands.

While many studies have looked to answer this question, there is a big methodological problem — the studies largely cannot be compared as they have used different definitions of axSpA.

Take a patient with inflammatory back pain, psoriasis, and oligoarthritis, Dr. Ramiro said. If the patient goes to one rheumatologist, they may get a diagnosis of axSpA, but if they go to a different rheumatologist, they may get a diagnosis of axial PsA.

“This is influenced by training, expertise, by beliefs, and by belonging to ASAS [Assessment of Spondyloarthritis International Society] or to GRAPPA [Group for Research and Assessment of Psoriasis and Psoriatic Arthritis],” Dr. Ramiro suggested. It’s “a diagnostic bias” that is very difficult to overcome and makes direct comparisons between patient populations recruited into clinical studies “extremely challenging.”

To confuse matters more, axial PsA and axSpA share common characteristics: Inflammatory back pain, HLA-B27 positivity, elevated levels of C-reactive protein (CRP) or a higher erythrocyte sedimentation rate, and structural lesions in the sacroiliac joints and spine.
 

AXIS Study ‘Gives Answers’

More research into factors associated with axial PsA need to be performed to try to help define the condition and enable classification and ultimately treatment guidelines. This is where the AXIS study comes in.

The AXIS study is a joint project of ASAS and GRAPPA that was started in January 2019 with the aim of defining a homogeneous subgroup of patients who could be studied.

“The objectives of the AXIS study are to determine the frequency of axial involvement in patients with PsA; to identify the frequency of active inflammatory and structural changes on imaging; and to identify factors associated with the presence of axial involvement in PsA,” Murat Torgutalp, MD, of Charité – Universitätsmedizin Berlin, Berlin, Germany, said at EULAR 2024.

The study population consisted of 409 consecutively recruited patients diagnosed with PsA according to CASPAR (Classification for Psoriatic Arthritis) criteria; all have had PsA for up to 10 years and were untreated with biologic or targeted synthetic disease modifying drugs at the time of inclusion.

Dr. Torgutalp, who is the study’s primary research coordinator, reported that a diagnosis of PsA was made in 37% of the population when local investigators considered available clinical, laboratory, and imaging data. However, patients’ imaging data were also centrally assessed, and when the local investigators were party to the expert imaging interpretations, the percentage of people diagnosed with PsA dropped to 27%.

“When we looked at the clinical characteristics, the presence of the back pain, particularly inflammatory back pain, HLA-B27 positivity, elevated CRP, and presence of active, inflammatory and structural changes in the sacroiliac joints and spine were associated with the final conclusion on the presence of axial involvement,” Dr. Torgutalp said.

Despite the title of his presentation being “The Axis Study Gives Answers,” Dr. Torgutalp presented lots of data without giving much insight into how they might be used. He concluded that “overall, there was a trend toward overestimation of the presence of imaging changes indicative of axial involvement across all imaging modalities” by the local investigators.

Dennis McGonagle, MB, MCH, BAO, PhD, of the University of Leeds, Leeds, England,said in an interview that the AXIS study “is a noble, international effort across multiple countries to try and better understand axial PsA.”

Dr. McGonagle, who was not involved in the study, added: “A lot of data are being generated, and a lot of analysis needs to be done to drill down to get a clear message that could influence practice.”
 

Axial PsA in the Portuguese Population

Separately, Catarina Abreu, a rheumatology intern at Hospital Garcia de Orta, Almada, Portugal, presented some real-world data on axial PsA from Reuma.pt.

Of 2304 patients, 854 (37.1%) reportedly had axial PsA, which had been defined as physician-reported spondylitis or the presence of imaging findings suggestive of axial involvement. This included radiographic- or MRI-detected sacroiliitis or syndesmophytes seen on axial x-rays.

The majority (78.2%) of those with an axial PsA diagnosis had concomitant peripheral involvement, with 8.1% having exclusive axial disease.

About 70% of the axial PsA diagnoses had been made using clinical or laboratory findings alone, and 30% of diagnoses was based on imaging results. Of the latter, Ms. Abreu noted that patients who had imaging data available were more likely to be HLA-B27 positive and less likely to have dactylitis, with respective odds ratios (ORs) of 3.10 and 2.42.

Individuals with axial PsA were more likely to have enthesitis (OR, 1.92), although no data were available on whether this was axial or peripheral enthesitis. Tobacco exposure was also linked to an increased chance of having axial PsA (OR, 1.66).

Ms. Abreu noted that the “scarce number of available imaging exams” and other missing data in Reuma.pt may have led to an underdiagnosis of axial PsA.

“The difference that we found between axial and peripheral [PsA] are similar to the differences found in other studies that compared axial psoriatic arthritis with axial spondyloarthritis,” Ms. Abreu said.

“So, we leave with the question that was already left before here: If these are different diseases or just different phenotypes of the same disease, and what implications will this have in the future?” Ms. Abreu concluded.

Dr. Carron received educational grants, speaker fees, or honoraria for other consultancy work from AbbVie, UCB, Pfizer, Eli Lilly, Novartis, Janssen, and Galapagos/Alfasigma. Dr. Ramiro is an ASAS executive committee member and received research grants or consulting/speaker fees from AbbVie, Eli Lilly, Galapagos, Janssen, Merck Sharp and Dohme, Novartis, Pfizer, Sanofi, and UCB. AXIS is supported by unrestricted research grants from AbbVie, Galapagos, Janssen, Eli Lilly, Novartis, Pfizer, and UCB. Dr. Torgutalp is the primary research coordinator for the study; he reported no financial conflicts of interest. The Reuma.pt registry was developed with the financial support of the pharmaceutical industry and is currently supported by AbbVie, Amgen, AstraZeneca, Boehringer Ingelheim, Eli Lilly, Merck Sharp and Dohme, Novartis, Pfizer, and Sobi. Ms. Abreu reported no financial conflicts of interest.

A version of this article appeared on Medscape.com.

VIENNA — While there is no doubt that some people with psoriatic arthritis (PsA) have axial symptoms, data presented at the annual European Congress of Rheumatology do not appear to add much to what is already known about axial PsA or to further the cause of differentiating it from axial spondyloarthritis (axSpA).

In both the AXIS study and Reuma.pt, around one in three patients with PsA were found to have axial involvement. Notably, the percentage of people with axial PsA was found to vary according to how imaging information was interpreted in the AXIS study. Both studies were discussed during the Axial Involvement in PsA and SpA session at EULAR 2024.
 

The One-Million-Dollar Question

“So, the one-million-dollar question: What is it, really?” Philippe Carron, MD, PhD, Ghent University Hospital, Ghent, Belgium, said in the presentation that started the session. Despite PsA being described more than 60 years ago, “we still have no internationally accepted definition or a consensus on how we should define these patients and how we should screen them,” he said.

“There are some believers that it is just a form of axial SpA with concomitant psoriasis, but also some people that think that the axial PsA is a typical disease, with typical characteristics which are different from axial disease,” Dr. Carron said.

The lack of consensus makes it difficult to estimate just how many people have axial PsA. Reported prevalences range from 5% to 70%, “all caused by which criteria that you’re using to define axial involvement,” Dr. Carron added.

There are, however, two things that can be agreed upon, according to Dr. Carron. First, the prevalence of axial involvement in people with early PsA is “much, much lower” than that of more established disease. Second, exclusive axial involvement is seen in “just a minority of PsA patients.” Most people with axial disease also have peripheral disease, he added.

Imaging findings in axial PsA “are quite similar to those seen in axial SpA,” although Dr. Carron also said that there were some distinct differences. Radiographic sacroiliitis occurs in around 25%-50% of people with axial PsA, and atypical syndesmophytes are more often found in people with axial PsA than in those with axSpA.
 

Shared Characteristics

But are axial PsA and axSpA separate diseases or part of the same disease continuum? That’s a question that is still very much open for debate, said Sofia Ramiro, MD, PhD, a senior researcher at Leiden University Medical Center, Leiden, the Netherlands, and rheumatology consultant at Zuyderland Medical Center in Heerlen, the Netherlands.

While many studies have looked to answer this question, there is a big methodological problem — the studies largely cannot be compared as they have used different definitions of axSpA.

Take a patient with inflammatory back pain, psoriasis, and oligoarthritis, Dr. Ramiro said. If the patient goes to one rheumatologist, they may get a diagnosis of axSpA, but if they go to a different rheumatologist, they may get a diagnosis of axial PsA.

“This is influenced by training, expertise, by beliefs, and by belonging to ASAS [Assessment of Spondyloarthritis International Society] or to GRAPPA [Group for Research and Assessment of Psoriasis and Psoriatic Arthritis],” Dr. Ramiro suggested. It’s “a diagnostic bias” that is very difficult to overcome and makes direct comparisons between patient populations recruited into clinical studies “extremely challenging.”

To confuse matters more, axial PsA and axSpA share common characteristics: Inflammatory back pain, HLA-B27 positivity, elevated levels of C-reactive protein (CRP) or a higher erythrocyte sedimentation rate, and structural lesions in the sacroiliac joints and spine.
 

AXIS Study ‘Gives Answers’

More research into factors associated with axial PsA need to be performed to try to help define the condition and enable classification and ultimately treatment guidelines. This is where the AXIS study comes in.

The AXIS study is a joint project of ASAS and GRAPPA that was started in January 2019 with the aim of defining a homogeneous subgroup of patients who could be studied.

“The objectives of the AXIS study are to determine the frequency of axial involvement in patients with PsA; to identify the frequency of active inflammatory and structural changes on imaging; and to identify factors associated with the presence of axial involvement in PsA,” Murat Torgutalp, MD, of Charité – Universitätsmedizin Berlin, Berlin, Germany, said at EULAR 2024.

The study population consisted of 409 consecutively recruited patients diagnosed with PsA according to CASPAR (Classification for Psoriatic Arthritis) criteria; all have had PsA for up to 10 years and were untreated with biologic or targeted synthetic disease modifying drugs at the time of inclusion.

Dr. Torgutalp, who is the study’s primary research coordinator, reported that a diagnosis of PsA was made in 37% of the population when local investigators considered available clinical, laboratory, and imaging data. However, patients’ imaging data were also centrally assessed, and when the local investigators were party to the expert imaging interpretations, the percentage of people diagnosed with PsA dropped to 27%.

“When we looked at the clinical characteristics, the presence of the back pain, particularly inflammatory back pain, HLA-B27 positivity, elevated CRP, and presence of active, inflammatory and structural changes in the sacroiliac joints and spine were associated with the final conclusion on the presence of axial involvement,” Dr. Torgutalp said.

Despite the title of his presentation being “The Axis Study Gives Answers,” Dr. Torgutalp presented lots of data without giving much insight into how they might be used. He concluded that “overall, there was a trend toward overestimation of the presence of imaging changes indicative of axial involvement across all imaging modalities” by the local investigators.

Dennis McGonagle, MB, MCH, BAO, PhD, of the University of Leeds, Leeds, England,said in an interview that the AXIS study “is a noble, international effort across multiple countries to try and better understand axial PsA.”

Dr. McGonagle, who was not involved in the study, added: “A lot of data are being generated, and a lot of analysis needs to be done to drill down to get a clear message that could influence practice.”
 

Axial PsA in the Portuguese Population

Separately, Catarina Abreu, a rheumatology intern at Hospital Garcia de Orta, Almada, Portugal, presented some real-world data on axial PsA from Reuma.pt.

Of 2304 patients, 854 (37.1%) reportedly had axial PsA, which had been defined as physician-reported spondylitis or the presence of imaging findings suggestive of axial involvement. This included radiographic- or MRI-detected sacroiliitis or syndesmophytes seen on axial x-rays.

The majority (78.2%) of those with an axial PsA diagnosis had concomitant peripheral involvement, with 8.1% having exclusive axial disease.

About 70% of the axial PsA diagnoses had been made using clinical or laboratory findings alone, and 30% of diagnoses was based on imaging results. Of the latter, Ms. Abreu noted that patients who had imaging data available were more likely to be HLA-B27 positive and less likely to have dactylitis, with respective odds ratios (ORs) of 3.10 and 2.42.

Individuals with axial PsA were more likely to have enthesitis (OR, 1.92), although no data were available on whether this was axial or peripheral enthesitis. Tobacco exposure was also linked to an increased chance of having axial PsA (OR, 1.66).

Ms. Abreu noted that the “scarce number of available imaging exams” and other missing data in Reuma.pt may have led to an underdiagnosis of axial PsA.

“The difference that we found between axial and peripheral [PsA] are similar to the differences found in other studies that compared axial psoriatic arthritis with axial spondyloarthritis,” Ms. Abreu said.

“So, we leave with the question that was already left before here: If these are different diseases or just different phenotypes of the same disease, and what implications will this have in the future?” Ms. Abreu concluded.

Dr. Carron received educational grants, speaker fees, or honoraria for other consultancy work from AbbVie, UCB, Pfizer, Eli Lilly, Novartis, Janssen, and Galapagos/Alfasigma. Dr. Ramiro is an ASAS executive committee member and received research grants or consulting/speaker fees from AbbVie, Eli Lilly, Galapagos, Janssen, Merck Sharp and Dohme, Novartis, Pfizer, Sanofi, and UCB. AXIS is supported by unrestricted research grants from AbbVie, Galapagos, Janssen, Eli Lilly, Novartis, Pfizer, and UCB. Dr. Torgutalp is the primary research coordinator for the study; he reported no financial conflicts of interest. The Reuma.pt registry was developed with the financial support of the pharmaceutical industry and is currently supported by AbbVie, Amgen, AstraZeneca, Boehringer Ingelheim, Eli Lilly, Merck Sharp and Dohme, Novartis, Pfizer, and Sobi. Ms. Abreu reported no financial conflicts of interest.

A version of this article appeared on Medscape.com.

TOPLINE:

The tyrosine kinase 2 (TYK2) inhibitor TAK-279 demonstrated superiority to placebo in patients with active psoriatic arthritis (PsA), according to phase 2 trial results.

METHODOLOGY:

• Eligible patients were over 18 years old, had PsA for over 6 months, met the classification criteria for PsA, and had at least three swollen and tender joints despite prior nonsteroidal anti-inflammatory drug, disease-modifying antirheumatic drug, or biologic treatment.
• A total of 290 patients were randomized 1:1:1:1 to receive placebo, oral TAK-279 5 mg, 15 mg, or 30 mg once daily.
• The primary endpoint was a 20% improvement in the American College of Rheumatology response criteria (ACR20) at 12 weeks.

TAKEAWAY:

• More than half of patients assigned to TAK-279 15 mg (53.3%) and TAK-279 30 mg (54.2%) achieved ACR20 at 12 weeks, compared with 29.2% of those assigned to placebo.
• Psoriasis Area and Severity Index 75 response rates were also higher in patients assigned to TAK-279 30 mg (45.7%) or 15 mg (28.3%) than those in placebo (15.4%).
• Treatment-emergent adverse events (TEAEs) of any kind were numerically higher in the 30-mg group, though serious TEAEs were similar across all treatment arms.
• The most frequent adverse events were nasal pharyngitis, upper respiratory tract infections, headache, and rash, with rash being most common in the TAK-279 30-mg group.

IN PRACTICE:

“There are few targeted oral therapies for active PSA available currently,” said lead author Alan Kivitz, MD, Altoona Center for Clinical Research, Duncansville, Pennsylvania, “and [TAK-279], which was well tolerated and demonstrated superior efficacy versus placebo, may be a promising targeted oral therapy for patients with PsA.”
 

SOURCE:

Dr. Kivitz presented the study findings at the European Alliance of Associations for Rheumatology (EULAR) 2024 Annual Meeting, held in Vienna.

LIMITATIONS:

The study was a phase 2 trial, and larger studies in active PsA are needed (and currently being planned).
 

DISCLOSURES:

The phase 2 trial was funded by Nimbus and Takeda. Dr. Kivitz has received payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing, or educational events from AbbVie, Amgen, Eli Lilly, GlaxoSmithKline, Pfizer, and UCB. He has stock or stock options in Pfizer, Amgen, GlaxoSmithKline, Gilead, Novartis, and Pfizer and has received consultant fees from Fresenius Kabi, Genzyme, Gilead, Grunenthal, GlaxoSmithKline, Horizon, Janssen, Pfizer, Selecta, SynAct Pharma, and Takeda. He has been part of a board or advisory board for ChemoCentryx, Horizon, Janssen, Novartis, Princeton Biopartners, and UCB. Other authors also disclosed many relationships with pharmaceutical companies.

A version of this article first appeared on Medscape.com.

TOPLINE:

The tyrosine kinase 2 (TYK2) inhibitor TAK-279 demonstrated superiority to placebo in patients with active psoriatic arthritis (PsA), according to phase 2 trial results.

METHODOLOGY:

• Eligible patients were over 18 years old, had PsA for over 6 months, met the classification criteria for PsA, and had at least three swollen and tender joints despite prior nonsteroidal anti-inflammatory drug, disease-modifying antirheumatic drug, or biologic treatment.
• A total of 290 patients were randomized 1:1:1:1 to receive placebo, oral TAK-279 5 mg, 15 mg, or 30 mg once daily.
• The primary endpoint was a 20% improvement in the American College of Rheumatology response criteria (ACR20) at 12 weeks.

TAKEAWAY:

• More than half of patients assigned to TAK-279 15 mg (53.3%) and TAK-279 30 mg (54.2%) achieved ACR20 at 12 weeks, compared with 29.2% of those assigned to placebo.
• Psoriasis Area and Severity Index 75 response rates were also higher in patients assigned to TAK-279 30 mg (45.7%) or 15 mg (28.3%) than those in placebo (15.4%).
• Treatment-emergent adverse events (TEAEs) of any kind were numerically higher in the 30-mg group, though serious TEAEs were similar across all treatment arms.
• The most frequent adverse events were nasal pharyngitis, upper respiratory tract infections, headache, and rash, with rash being most common in the TAK-279 30-mg group.

IN PRACTICE:

“There are few targeted oral therapies for active PSA available currently,” said lead author Alan Kivitz, MD, Altoona Center for Clinical Research, Duncansville, Pennsylvania, “and [TAK-279], which was well tolerated and demonstrated superior efficacy versus placebo, may be a promising targeted oral therapy for patients with PsA.”
 

SOURCE:

Dr. Kivitz presented the study findings at the European Alliance of Associations for Rheumatology (EULAR) 2024 Annual Meeting, held in Vienna.

LIMITATIONS:

The study was a phase 2 trial, and larger studies in active PsA are needed (and currently being planned).
 

DISCLOSURES:

The phase 2 trial was funded by Nimbus and Takeda. Dr. Kivitz has received payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing, or educational events from AbbVie, Amgen, Eli Lilly, GlaxoSmithKline, Pfizer, and UCB. He has stock or stock options in Pfizer, Amgen, GlaxoSmithKline, Gilead, Novartis, and Pfizer and has received consultant fees from Fresenius Kabi, Genzyme, Gilead, Grunenthal, GlaxoSmithKline, Horizon, Janssen, Pfizer, Selecta, SynAct Pharma, and Takeda. He has been part of a board or advisory board for ChemoCentryx, Horizon, Janssen, Novartis, Princeton Biopartners, and UCB. Other authors also disclosed many relationships with pharmaceutical companies.

A version of this article first appeared on Medscape.com.

TOPLINE:

The tyrosine kinase 2 (TYK2) inhibitor TAK-279 demonstrated superiority to placebo in patients with active psoriatic arthritis (PsA), according to phase 2 trial results.

METHODOLOGY:

• Eligible patients were over 18 years old, had PsA for over 6 months, met the classification criteria for PsA, and had at least three swollen and tender joints despite prior nonsteroidal anti-inflammatory drug, disease-modifying antirheumatic drug, or biologic treatment.
• A total of 290 patients were randomized 1:1:1:1 to receive placebo, oral TAK-279 5 mg, 15 mg, or 30 mg once daily.
• The primary endpoint was a 20% improvement in the American College of Rheumatology response criteria (ACR20) at 12 weeks.

TAKEAWAY:

• More than half of patients assigned to TAK-279 15 mg (53.3%) and TAK-279 30 mg (54.2%) achieved ACR20 at 12 weeks, compared with 29.2% of those assigned to placebo.
• Psoriasis Area and Severity Index 75 response rates were also higher in patients assigned to TAK-279 30 mg (45.7%) or 15 mg (28.3%) than those in placebo (15.4%).
• Treatment-emergent adverse events (TEAEs) of any kind were numerically higher in the 30-mg group, though serious TEAEs were similar across all treatment arms.
• The most frequent adverse events were nasal pharyngitis, upper respiratory tract infections, headache, and rash, with rash being most common in the TAK-279 30-mg group.

IN PRACTICE:

“There are few targeted oral therapies for active PSA available currently,” said lead author Alan Kivitz, MD, Altoona Center for Clinical Research, Duncansville, Pennsylvania, “and [TAK-279], which was well tolerated and demonstrated superior efficacy versus placebo, may be a promising targeted oral therapy for patients with PsA.”
 

SOURCE:

Dr. Kivitz presented the study findings at the European Alliance of Associations for Rheumatology (EULAR) 2024 Annual Meeting, held in Vienna.

LIMITATIONS:

The study was a phase 2 trial, and larger studies in active PsA are needed (and currently being planned).
 

DISCLOSURES:

The phase 2 trial was funded by Nimbus and Takeda. Dr. Kivitz has received payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing, or educational events from AbbVie, Amgen, Eli Lilly, GlaxoSmithKline, Pfizer, and UCB. He has stock or stock options in Pfizer, Amgen, GlaxoSmithKline, Gilead, Novartis, and Pfizer and has received consultant fees from Fresenius Kabi, Genzyme, Gilead, Grunenthal, GlaxoSmithKline, Horizon, Janssen, Pfizer, Selecta, SynAct Pharma, and Takeda. He has been part of a board or advisory board for ChemoCentryx, Horizon, Janssen, Novartis, Princeton Biopartners, and UCB. Other authors also disclosed many relationships with pharmaceutical companies.

A version of this article first appeared on Medscape.com.

TOPLINE:

Treatment of patients with active psoriatic arthritis with sonelokimab — an interleukin (IL)-17A- and IL-17F-inhibiting nanobody — led to a higher percentage of patients with 50% or greater improvement in American College of Rheumatology response criteria (ACR50) compared with the placebo in a phase 2 trial.

METHODOLOGY:

• Sonelokimab is a 40-kDa nanobody that binds to IL-17A, IL-17F, and albumin.
• Eligible patients were at least 18 years old with active PsA (at least three swollen and three tender joints) and had a psoriasis diagnosis.
• A total of 207 patients were randomized 1:1:1:1 to every 4 weeks receive placebo, sonelokimab 60 mg with no induction (NI) period, sonelokimab 60 mg with induction, and sonelokimab 120 mg with induction.
• Induction was once every 2 weeks up to week 8 of the trial.
• The primary endpoint was meeting ACR20 response criteria at 12 weeks.

TAKEAWAY:

• About 46% of patients in the sonelokimab 120-mg and 60-mg groups achieved ACR50, compared with 36.6% in the sonelokimab 60-mg NI group and 20% of those assigned to placebo.
• ACR20 and 90% or greater reduction in Psoriasis Area and Severity Index score response rates were higher in all three sonelokimab groups than in the placebo group.
• There were no unexpected safety findings during the trial, and no cases of inflammatory bowel disease or major cardiovascular events.
• There were two cases of oral candidiasis, which did not lead to study discontinuation.

IN PRACTICE:

These data “support further exploration in phase 3 trials of sonelokimab to evaluate its potential for the treatment of PsA,” the authors noted in the presentation.

SOURCE:

Iain B. McInnes, MD, PhD, of the University of Glasgow, Glasgow, Scotland, presented these phase 2 trial results at the European Alliance of Associations for Rheumatology (EULAR) 2024 Annual Congress, held in Vienna.

LIMITATIONS:

The results are from a phase 2 trial, and more research is needed.

DISCLOSURES:

MoonLake Immunotherapeutics funded the research. Dr. McInnes disclosed relationships with AbbVie, Amgen, AstraZeneca, Bristol Myers Squibb, Causeway Therapeutics, Cabaletta Bio, Compugen, Evelo, Gilead, GlaxoSmithKline, Janssen, Eli Lilly, Novartis, MoonLake Immunotherapeutics, Pfizer, Sanofi Regeneron, and UCB. Other authors also disclosed many relationships with pharmaceutical companies.

A version of this article first appeared on Medscape.com.

TOPLINE:

Treatment of patients with active psoriatic arthritis with sonelokimab — an interleukin (IL)-17A- and IL-17F-inhibiting nanobody — led to a higher percentage of patients with 50% or greater improvement in American College of Rheumatology response criteria (ACR50) compared with the placebo in a phase 2 trial.

METHODOLOGY:

• Sonelokimab is a 40-kDa nanobody that binds to IL-17A, IL-17F, and albumin.
• Eligible patients were at least 18 years old with active PsA (at least three swollen and three tender joints) and had a psoriasis diagnosis.
• A total of 207 patients were randomized 1:1:1:1 to every 4 weeks receive placebo, sonelokimab 60 mg with no induction (NI) period, sonelokimab 60 mg with induction, and sonelokimab 120 mg with induction.
• Induction was once every 2 weeks up to week 8 of the trial.
• The primary endpoint was meeting ACR20 response criteria at 12 weeks.

TAKEAWAY:

• About 46% of patients in the sonelokimab 120-mg and 60-mg groups achieved ACR50, compared with 36.6% in the sonelokimab 60-mg NI group and 20% of those assigned to placebo.
• ACR20 and 90% or greater reduction in Psoriasis Area and Severity Index score response rates were higher in all three sonelokimab groups than in the placebo group.
• There were no unexpected safety findings during the trial, and no cases of inflammatory bowel disease or major cardiovascular events.
• There were two cases of oral candidiasis, which did not lead to study discontinuation.

IN PRACTICE:

These data “support further exploration in phase 3 trials of sonelokimab to evaluate its potential for the treatment of PsA,” the authors noted in the presentation.

SOURCE:

Iain B. McInnes, MD, PhD, of the University of Glasgow, Glasgow, Scotland, presented these phase 2 trial results at the European Alliance of Associations for Rheumatology (EULAR) 2024 Annual Congress, held in Vienna.

LIMITATIONS:

The results are from a phase 2 trial, and more research is needed.

DISCLOSURES:

MoonLake Immunotherapeutics funded the research. Dr. McInnes disclosed relationships with AbbVie, Amgen, AstraZeneca, Bristol Myers Squibb, Causeway Therapeutics, Cabaletta Bio, Compugen, Evelo, Gilead, GlaxoSmithKline, Janssen, Eli Lilly, Novartis, MoonLake Immunotherapeutics, Pfizer, Sanofi Regeneron, and UCB. Other authors also disclosed many relationships with pharmaceutical companies.

A version of this article first appeared on Medscape.com.

TOPLINE:

Treatment of patients with active psoriatic arthritis with sonelokimab — an interleukin (IL)-17A- and IL-17F-inhibiting nanobody — led to a higher percentage of patients with 50% or greater improvement in American College of Rheumatology response criteria (ACR50) compared with the placebo in a phase 2 trial.

METHODOLOGY:

• Sonelokimab is a 40-kDa nanobody that binds to IL-17A, IL-17F, and albumin.
• Eligible patients were at least 18 years old with active PsA (at least three swollen and three tender joints) and had a psoriasis diagnosis.
• A total of 207 patients were randomized 1:1:1:1 to every 4 weeks receive placebo, sonelokimab 60 mg with no induction (NI) period, sonelokimab 60 mg with induction, and sonelokimab 120 mg with induction.
• Induction was once every 2 weeks up to week 8 of the trial.
• The primary endpoint was meeting ACR20 response criteria at 12 weeks.

TAKEAWAY:

• About 46% of patients in the sonelokimab 120-mg and 60-mg groups achieved ACR50, compared with 36.6% in the sonelokimab 60-mg NI group and 20% of those assigned to placebo.
• ACR20 and 90% or greater reduction in Psoriasis Area and Severity Index score response rates were higher in all three sonelokimab groups than in the placebo group.
• There were no unexpected safety findings during the trial, and no cases of inflammatory bowel disease or major cardiovascular events.
• There were two cases of oral candidiasis, which did not lead to study discontinuation.

IN PRACTICE:

These data “support further exploration in phase 3 trials of sonelokimab to evaluate its potential for the treatment of PsA,” the authors noted in the presentation.

SOURCE:

Iain B. McInnes, MD, PhD, of the University of Glasgow, Glasgow, Scotland, presented these phase 2 trial results at the European Alliance of Associations for Rheumatology (EULAR) 2024 Annual Congress, held in Vienna.

LIMITATIONS:

The results are from a phase 2 trial, and more research is needed.

DISCLOSURES:

MoonLake Immunotherapeutics funded the research. Dr. McInnes disclosed relationships with AbbVie, Amgen, AstraZeneca, Bristol Myers Squibb, Causeway Therapeutics, Cabaletta Bio, Compugen, Evelo, Gilead, GlaxoSmithKline, Janssen, Eli Lilly, Novartis, MoonLake Immunotherapeutics, Pfizer, Sanofi Regeneron, and UCB. Other authors also disclosed many relationships with pharmaceutical companies.

A version of this article first appeared on Medscape.com.

VIENNA — People with spondyloarthritis (SpA) who have low or stable disease activity can effectively and safely be managed using a model of patient-initiated care with or without remote monitoring, suggested the results of two separate trials presented at the European Alliance of Associations for Rheumatology (EULAR) 2024 Annual Meeting. 

In the 18-month, single-center ReMonit study that included 243 people with axial SpA (axSpA), patient-initiated care was found to be noninferior for keeping them in a low-disease activity state, compared with both usual hospital follow-up and remote digital monitoring.

Meanwhile, in the 12-month, multicenter TeleSpA study, which included 200 patients with any type of SpA, the number of hospital visits needed by people who were randomly assigned to receive patient-initiated care together with asynchronous telemonitoring was significantly lower than for the usual-care group, with no detriment to the participants’ overall health outcomes or safety. Moreover, the strategy was deemed cost-effective from a healthcare provision perspective.
 

Time to Rationalize Healthcare Resources?

People with chronic rheumatic diseases such as axSpA require long-term follow-up in specialist healthcare centers, Inger Jorid Berg, MD, PhD, of Diakonhjemmet Hospital in Oslo, Norway, said when she presented the findings of the ReMonit study as a late-breaking abstract.

Sara Freeman/Medscape Medical News

“Traditionally, this has been offered as prescheduled face-to-face consultations at an outpatient clinic, but remote monitoring and patient-initiated care may allow for more targeted and efficient uses of healthcare resources,” Dr. Berg said.

“The end goal of what you’re trying to do is increase the efficiency of outpatient care and provide more patient-tailored care,” Kasper Hermans, MD, said in an interview. He presented the results of the TeleSpA study. 

Dr. Hermans, who is a rheumatology fellow and PhD candidate at Maastricht University, Maastricht, the Netherlands, observed during his presentation at EULAR 2024 that there is an increasing demand for rheumatology services but an expected shortfall in the future workforce. Thus, “sustainable alternative strategies are needed for optimizing the efficiency of care,” he said.

People need to have timely access to care, Dr. Hermans stressed, but perhaps alternatives to the traditional models of care where patients are seen routinely every 6 or 12 months are needed, particularly as prior work had suggested that around one-third of people who were seen by a rheumatologist perhaps did not need to be.

A strategy of patient-initiated care — which is where people are seen by a healthcare provider only if they feel that they need to and request a consultation — is therefore an attractive proposition, particularly if it is backed up with remote monitoring, which is what the TeleSpA study was testing.
 

Two Distinct Studies

ReMonit and TeleSpA were two distinct studies. While both were noninferiority trials and involved patient-initiated care and telemonitoring of outpatients with SpA, that is where the similarities generally end.

Notably, ReMonit included a very specific population of patients — all had a diagnosis of axSpA and were being treated with a tumor necrosis factor (TNF) inhibitor and had been on a stable dose for the last 6 months. For inclusion, they also had to have inactive disease or low disease activity, as indicated by an Ankylosing Spondylitis Disease Activity Score (ASDAS) < 2.1.

ReMonit’s telemonitoring strategy involved participants completing monthly questionnaires using the Dignio smartphone app. Patients first completed the Patient Global Assessment (PGA) and noted whether they had experienced a flare in their disease. If they had a flare or their PGA score was 3 or higher, then they were asked to also complete the Bath Ankylosing Spondyloarthritis Disease Activity Index (BASDAI). If the BASDAI score was 4 or more, then the patient was called by a study nurse and offered a consultation.

“Patients in all three groups were recommended to take blood samples at the general practitioner’s or at the hospital every third month as a safety procedure when using TNF inhibitors,” Dr. Berg said.

The primary outcome was the proportion of people who remained with low disease activity (ASDAS < 2.1) at 6, 12, and 18 months in each of the three arms of the trial, which were patient-initiated care (n = 81), monthly remote monitoring (n = 80), or usual follow-up in the hospital every 6 months (n = 82).

TeleSpA on the other hand was a “much more pragmatic trial, much closer to actual care,” Dr. Hermans said. “We included axial spondyloarthritis, peripheral spondyloarthritis, or patients who had both axial and peripheral disease, including patients with psoriatic arthritis,” he said, adding that their inclusion was regardless of their baseline ASDAS based on C-reactive protein (ASDAS-CRP).

This means that patients who would otherwise have been classified at baseline as having high disease activity (by ASDAS-CRP or similar disease activity measures) could be included. The main proviso was that both the patient and their rheumatologist had to define the condition as being stable with an acceptable level of symptom control and no immediate plans to change treatment within the next 3 months.

TeleSpA’s remote monitoring strategy involved the use of SpA-Net, which Dr. Hermans and coinvestigators have described previously as “an ongoing, disease-specific, prospective, web-based registry for monitoring SpA in daily practice.” This captures a host of clinical and laboratory test information.

SpA-Net was used in both arms of the study. However, while the 100 participants in the standard-care arm completed questionnaires and had tests before every in-person visit that had been prescheduled with their rheumatologist, the 100 individuals in the patient-initiated care arm had no prescheduled in-person visits except for being seen at the start and end of the study. These patients were reminded via email to complete the necessary SpA-Net registry questionnaires at 6 months.

The primary outcome for TeleSpA was the total number of rheumatology visits, including both physical and telephone or video consultations, within a 1-year period. 
 

ReMonit Results

Berg reported that similar percentages of patients remained in a low disease activity state at 6, 12, and 18 months, regardless of the group that they had been randomized into, and that there was little change seen within the individual groups.

For instance, at 6, 12, and 18 months, 92%, 91%, and 92% of individuals in the patient-initiated arm had an ASDAS of < 2.1. Corresponding percentages for the usual-care arm were 96%, 93%, and 90% and for the remote-monitoring arm were 96%, 96%, and 94%.

Both patient-initiated care and remote monitoring were noninferior to usual care, and patient-initiated care was also noninferior to remote monitoring. There were no differences between the trial arms in terms of disease activity, measured using either ASDAS or BASDAI, at 6, 12, or 18 months.

Dr. Berg stated that “patient satisfaction was high in all three follow-up strategies, and there was the lowest resource use with patient-initiated care.” She concluded that “remote monitoring and patient-initiated care could be implemented in the follow-up of patients with axial spondyloarthritis and low disease activity.”
 

TeleSpA Results

In TeleSpA, people in the patient-initiated care and telemonitoring arm were seen a mean of 1.9 times over the course of the 1-year follow-up vs 2.6 for people in the usual care arm. The reduction was caused in part by the decrease in physical visits (1.4 vs 2.0) as there were the same mean number of telephone visits in each group. Overall, there was a 25.4% reduction in consultations comparing the patient-initiated care and telemonitoring arm with the usual-care arm.

Importantly, the intervention was noninferior regarding all of the predefined health outcomes: ASDAS, BASDAI, pain assessed using a visual analog scale, patient global assessment, and physician global assessment.

And more than 90% of participants in both groups reported having an overall good experience with their care.

Dr. Hermans noted after his presentation that an additional study had been performed where “we actively engaged with patients in the intervention group as well as healthcare providers to ask them what their experiences were with the intervention, how we could possibly improve it, and whether or not they thought that it was a valid approach to follow-up after the end of the study. And results were very, very reassuring.”

In terms of safety, eight serious adverse events were reported, but none were related to the study intervention, Dr. Hermans said. 

Dr. Hermans reported that there was “negligible difference” in the 1-year quality-adjusted life-years (+0.004, in favor of the intervention overall) and that, while healthcare costs were lower at €243/year for the entire intervention period, societal costs were higher, at €513/year vs usual care. The latter was thought to be “due to an unexpected rise in absenteeism that we think was most likely due to a small amount of outliers,” Dr. Hermans said. 

Nonetheless, using at willingness-to-pay threshold of €20,000/ quality-adjusted life year, he reported that the added value of patient-initiated care with remote monitoring yielded a potential net monetary benefit of +€322 from a healthcare perspective for the entire intervention period.

“We believe that these results support the fast-paced adoption of remote care interventions,” Dr. Hermans said. “In the context that I described earlier, of decreasing healthcare personnel and rising costs, we believe that this could be a valuable approach for follow-up for patients with stable axSpA.”

ReMonit was sponsored by Diakonhjemmet Hospital, and TeleSpA was sponsored by Maastricht University Medical Center, with funding from the Dutch Arthritis Society. Dr. Berg and Dr. Hermans had no relevant conflicts of interest to report.

A version of this article first appeared on Medscape.com.

Editor’s Note: This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

VIENNA — People with spondyloarthritis (SpA) who have low or stable disease activity can effectively and safely be managed using a model of patient-initiated care with or without remote monitoring, suggested the results of two separate trials presented at the European Alliance of Associations for Rheumatology (EULAR) 2024 Annual Meeting. 

In the 18-month, single-center ReMonit study that included 243 people with axial SpA (axSpA), patient-initiated care was found to be noninferior for keeping them in a low-disease activity state, compared with both usual hospital follow-up and remote digital monitoring.

Meanwhile, in the 12-month, multicenter TeleSpA study, which included 200 patients with any type of SpA, the number of hospital visits needed by people who were randomly assigned to receive patient-initiated care together with asynchronous telemonitoring was significantly lower than for the usual-care group, with no detriment to the participants’ overall health outcomes or safety. Moreover, the strategy was deemed cost-effective from a healthcare provision perspective.
 

Time to Rationalize Healthcare Resources?

People with chronic rheumatic diseases such as axSpA require long-term follow-up in specialist healthcare centers, Inger Jorid Berg, MD, PhD, of Diakonhjemmet Hospital in Oslo, Norway, said when she presented the findings of the ReMonit study as a late-breaking abstract.

Sara Freeman/Medscape Medical News

“Traditionally, this has been offered as prescheduled face-to-face consultations at an outpatient clinic, but remote monitoring and patient-initiated care may allow for more targeted and efficient uses of healthcare resources,” Dr. Berg said.

“The end goal of what you’re trying to do is increase the efficiency of outpatient care and provide more patient-tailored care,” Kasper Hermans, MD, said in an interview. He presented the results of the TeleSpA study. 

Dr. Hermans, who is a rheumatology fellow and PhD candidate at Maastricht University, Maastricht, the Netherlands, observed during his presentation at EULAR 2024 that there is an increasing demand for rheumatology services but an expected shortfall in the future workforce. Thus, “sustainable alternative strategies are needed for optimizing the efficiency of care,” he said.

People need to have timely access to care, Dr. Hermans stressed, but perhaps alternatives to the traditional models of care where patients are seen routinely every 6 or 12 months are needed, particularly as prior work had suggested that around one-third of people who were seen by a rheumatologist perhaps did not need to be.

A strategy of patient-initiated care — which is where people are seen by a healthcare provider only if they feel that they need to and request a consultation — is therefore an attractive proposition, particularly if it is backed up with remote monitoring, which is what the TeleSpA study was testing.
 

Two Distinct Studies

ReMonit and TeleSpA were two distinct studies. While both were noninferiority trials and involved patient-initiated care and telemonitoring of outpatients with SpA, that is where the similarities generally end.

Notably, ReMonit included a very specific population of patients — all had a diagnosis of axSpA and were being treated with a tumor necrosis factor (TNF) inhibitor and had been on a stable dose for the last 6 months. For inclusion, they also had to have inactive disease or low disease activity, as indicated by an Ankylosing Spondylitis Disease Activity Score (ASDAS) < 2.1.

ReMonit’s telemonitoring strategy involved participants completing monthly questionnaires using the Dignio smartphone app. Patients first completed the Patient Global Assessment (PGA) and noted whether they had experienced a flare in their disease. If they had a flare or their PGA score was 3 or higher, then they were asked to also complete the Bath Ankylosing Spondyloarthritis Disease Activity Index (BASDAI). If the BASDAI score was 4 or more, then the patient was called by a study nurse and offered a consultation.

“Patients in all three groups were recommended to take blood samples at the general practitioner’s or at the hospital every third month as a safety procedure when using TNF inhibitors,” Dr. Berg said.

The primary outcome was the proportion of people who remained with low disease activity (ASDAS < 2.1) at 6, 12, and 18 months in each of the three arms of the trial, which were patient-initiated care (n = 81), monthly remote monitoring (n = 80), or usual follow-up in the hospital every 6 months (n = 82).

TeleSpA on the other hand was a “much more pragmatic trial, much closer to actual care,” Dr. Hermans said. “We included axial spondyloarthritis, peripheral spondyloarthritis, or patients who had both axial and peripheral disease, including patients with psoriatic arthritis,” he said, adding that their inclusion was regardless of their baseline ASDAS based on C-reactive protein (ASDAS-CRP).

This means that patients who would otherwise have been classified at baseline as having high disease activity (by ASDAS-CRP or similar disease activity measures) could be included. The main proviso was that both the patient and their rheumatologist had to define the condition as being stable with an acceptable level of symptom control and no immediate plans to change treatment within the next 3 months.

TeleSpA’s remote monitoring strategy involved the use of SpA-Net, which Dr. Hermans and coinvestigators have described previously as “an ongoing, disease-specific, prospective, web-based registry for monitoring SpA in daily practice.” This captures a host of clinical and laboratory test information.

SpA-Net was used in both arms of the study. However, while the 100 participants in the standard-care arm completed questionnaires and had tests before every in-person visit that had been prescheduled with their rheumatologist, the 100 individuals in the patient-initiated care arm had no prescheduled in-person visits except for being seen at the start and end of the study. These patients were reminded via email to complete the necessary SpA-Net registry questionnaires at 6 months.

The primary outcome for TeleSpA was the total number of rheumatology visits, including both physical and telephone or video consultations, within a 1-year period. 
 

ReMonit Results

Berg reported that similar percentages of patients remained in a low disease activity state at 6, 12, and 18 months, regardless of the group that they had been randomized into, and that there was little change seen within the individual groups.

For instance, at 6, 12, and 18 months, 92%, 91%, and 92% of individuals in the patient-initiated arm had an ASDAS of < 2.1. Corresponding percentages for the usual-care arm were 96%, 93%, and 90% and for the remote-monitoring arm were 96%, 96%, and 94%.

Both patient-initiated care and remote monitoring were noninferior to usual care, and patient-initiated care was also noninferior to remote monitoring. There were no differences between the trial arms in terms of disease activity, measured using either ASDAS or BASDAI, at 6, 12, or 18 months.

Dr. Berg stated that “patient satisfaction was high in all three follow-up strategies, and there was the lowest resource use with patient-initiated care.” She concluded that “remote monitoring and patient-initiated care could be implemented in the follow-up of patients with axial spondyloarthritis and low disease activity.”
 

TeleSpA Results

In TeleSpA, people in the patient-initiated care and telemonitoring arm were seen a mean of 1.9 times over the course of the 1-year follow-up vs 2.6 for people in the usual care arm. The reduction was caused in part by the decrease in physical visits (1.4 vs 2.0) as there were the same mean number of telephone visits in each group. Overall, there was a 25.4% reduction in consultations comparing the patient-initiated care and telemonitoring arm with the usual-care arm.

Importantly, the intervention was noninferior regarding all of the predefined health outcomes: ASDAS, BASDAI, pain assessed using a visual analog scale, patient global assessment, and physician global assessment.

And more than 90% of participants in both groups reported having an overall good experience with their care.

Dr. Hermans noted after his presentation that an additional study had been performed where “we actively engaged with patients in the intervention group as well as healthcare providers to ask them what their experiences were with the intervention, how we could possibly improve it, and whether or not they thought that it was a valid approach to follow-up after the end of the study. And results were very, very reassuring.”

In terms of safety, eight serious adverse events were reported, but none were related to the study intervention, Dr. Hermans said. 

Dr. Hermans reported that there was “negligible difference” in the 1-year quality-adjusted life-years (+0.004, in favor of the intervention overall) and that, while healthcare costs were lower at €243/year for the entire intervention period, societal costs were higher, at €513/year vs usual care. The latter was thought to be “due to an unexpected rise in absenteeism that we think was most likely due to a small amount of outliers,” Dr. Hermans said. 

Nonetheless, using at willingness-to-pay threshold of €20,000/ quality-adjusted life year, he reported that the added value of patient-initiated care with remote monitoring yielded a potential net monetary benefit of +€322 from a healthcare perspective for the entire intervention period.

“We believe that these results support the fast-paced adoption of remote care interventions,” Dr. Hermans said. “In the context that I described earlier, of decreasing healthcare personnel and rising costs, we believe that this could be a valuable approach for follow-up for patients with stable axSpA.”

ReMonit was sponsored by Diakonhjemmet Hospital, and TeleSpA was sponsored by Maastricht University Medical Center, with funding from the Dutch Arthritis Society. Dr. Berg and Dr. Hermans had no relevant conflicts of interest to report.

A version of this article first appeared on Medscape.com.

Editor’s Note: This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

VIENNA — People with spondyloarthritis (SpA) who have low or stable disease activity can effectively and safely be managed using a model of patient-initiated care with or without remote monitoring, suggested the results of two separate trials presented at the European Alliance of Associations for Rheumatology (EULAR) 2024 Annual Meeting. 

In the 18-month, single-center ReMonit study that included 243 people with axial SpA (axSpA), patient-initiated care was found to be noninferior for keeping them in a low-disease activity state, compared with both usual hospital follow-up and remote digital monitoring.

Meanwhile, in the 12-month, multicenter TeleSpA study, which included 200 patients with any type of SpA, the number of hospital visits needed by people who were randomly assigned to receive patient-initiated care together with asynchronous telemonitoring was significantly lower than for the usual-care group, with no detriment to the participants’ overall health outcomes or safety. Moreover, the strategy was deemed cost-effective from a healthcare provision perspective.
 

Time to Rationalize Healthcare Resources?

People with chronic rheumatic diseases such as axSpA require long-term follow-up in specialist healthcare centers, Inger Jorid Berg, MD, PhD, of Diakonhjemmet Hospital in Oslo, Norway, said when she presented the findings of the ReMonit study as a late-breaking abstract.

Sara Freeman/Medscape Medical News

“Traditionally, this has been offered as prescheduled face-to-face consultations at an outpatient clinic, but remote monitoring and patient-initiated care may allow for more targeted and efficient uses of healthcare resources,” Dr. Berg said.

“The end goal of what you’re trying to do is increase the efficiency of outpatient care and provide more patient-tailored care,” Kasper Hermans, MD, said in an interview. He presented the results of the TeleSpA study. 

Dr. Hermans, who is a rheumatology fellow and PhD candidate at Maastricht University, Maastricht, the Netherlands, observed during his presentation at EULAR 2024 that there is an increasing demand for rheumatology services but an expected shortfall in the future workforce. Thus, “sustainable alternative strategies are needed for optimizing the efficiency of care,” he said.

People need to have timely access to care, Dr. Hermans stressed, but perhaps alternatives to the traditional models of care where patients are seen routinely every 6 or 12 months are needed, particularly as prior work had suggested that around one-third of people who were seen by a rheumatologist perhaps did not need to be.

A strategy of patient-initiated care — which is where people are seen by a healthcare provider only if they feel that they need to and request a consultation — is therefore an attractive proposition, particularly if it is backed up with remote monitoring, which is what the TeleSpA study was testing.
 

Two Distinct Studies

ReMonit and TeleSpA were two distinct studies. While both were noninferiority trials and involved patient-initiated care and telemonitoring of outpatients with SpA, that is where the similarities generally end.

Notably, ReMonit included a very specific population of patients — all had a diagnosis of axSpA and were being treated with a tumor necrosis factor (TNF) inhibitor and had been on a stable dose for the last 6 months. For inclusion, they also had to have inactive disease or low disease activity, as indicated by an Ankylosing Spondylitis Disease Activity Score (ASDAS) < 2.1.

ReMonit’s telemonitoring strategy involved participants completing monthly questionnaires using the Dignio smartphone app. Patients first completed the Patient Global Assessment (PGA) and noted whether they had experienced a flare in their disease. If they had a flare or their PGA score was 3 or higher, then they were asked to also complete the Bath Ankylosing Spondyloarthritis Disease Activity Index (BASDAI). If the BASDAI score was 4 or more, then the patient was called by a study nurse and offered a consultation.

“Patients in all three groups were recommended to take blood samples at the general practitioner’s or at the hospital every third month as a safety procedure when using TNF inhibitors,” Dr. Berg said.

The primary outcome was the proportion of people who remained with low disease activity (ASDAS < 2.1) at 6, 12, and 18 months in each of the three arms of the trial, which were patient-initiated care (n = 81), monthly remote monitoring (n = 80), or usual follow-up in the hospital every 6 months (n = 82).

TeleSpA on the other hand was a “much more pragmatic trial, much closer to actual care,” Dr. Hermans said. “We included axial spondyloarthritis, peripheral spondyloarthritis, or patients who had both axial and peripheral disease, including patients with psoriatic arthritis,” he said, adding that their inclusion was regardless of their baseline ASDAS based on C-reactive protein (ASDAS-CRP).

This means that patients who would otherwise have been classified at baseline as having high disease activity (by ASDAS-CRP or similar disease activity measures) could be included. The main proviso was that both the patient and their rheumatologist had to define the condition as being stable with an acceptable level of symptom control and no immediate plans to change treatment within the next 3 months.

TeleSpA’s remote monitoring strategy involved the use of SpA-Net, which Dr. Hermans and coinvestigators have described previously as “an ongoing, disease-specific, prospective, web-based registry for monitoring SpA in daily practice.” This captures a host of clinical and laboratory test information.

SpA-Net was used in both arms of the study. However, while the 100 participants in the standard-care arm completed questionnaires and had tests before every in-person visit that had been prescheduled with their rheumatologist, the 100 individuals in the patient-initiated care arm had no prescheduled in-person visits except for being seen at the start and end of the study. These patients were reminded via email to complete the necessary SpA-Net registry questionnaires at 6 months.

The primary outcome for TeleSpA was the total number of rheumatology visits, including both physical and telephone or video consultations, within a 1-year period. 
 

ReMonit Results

Berg reported that similar percentages of patients remained in a low disease activity state at 6, 12, and 18 months, regardless of the group that they had been randomized into, and that there was little change seen within the individual groups.

For instance, at 6, 12, and 18 months, 92%, 91%, and 92% of individuals in the patient-initiated arm had an ASDAS of < 2.1. Corresponding percentages for the usual-care arm were 96%, 93%, and 90% and for the remote-monitoring arm were 96%, 96%, and 94%.

Both patient-initiated care and remote monitoring were noninferior to usual care, and patient-initiated care was also noninferior to remote monitoring. There were no differences between the trial arms in terms of disease activity, measured using either ASDAS or BASDAI, at 6, 12, or 18 months.

Dr. Berg stated that “patient satisfaction was high in all three follow-up strategies, and there was the lowest resource use with patient-initiated care.” She concluded that “remote monitoring and patient-initiated care could be implemented in the follow-up of patients with axial spondyloarthritis and low disease activity.”
 

TeleSpA Results

In TeleSpA, people in the patient-initiated care and telemonitoring arm were seen a mean of 1.9 times over the course of the 1-year follow-up vs 2.6 for people in the usual care arm. The reduction was caused in part by the decrease in physical visits (1.4 vs 2.0) as there were the same mean number of telephone visits in each group. Overall, there was a 25.4% reduction in consultations comparing the patient-initiated care and telemonitoring arm with the usual-care arm.

Importantly, the intervention was noninferior regarding all of the predefined health outcomes: ASDAS, BASDAI, pain assessed using a visual analog scale, patient global assessment, and physician global assessment.

And more than 90% of participants in both groups reported having an overall good experience with their care.

Dr. Hermans noted after his presentation that an additional study had been performed where “we actively engaged with patients in the intervention group as well as healthcare providers to ask them what their experiences were with the intervention, how we could possibly improve it, and whether or not they thought that it was a valid approach to follow-up after the end of the study. And results were very, very reassuring.”

In terms of safety, eight serious adverse events were reported, but none were related to the study intervention, Dr. Hermans said. 

Dr. Hermans reported that there was “negligible difference” in the 1-year quality-adjusted life-years (+0.004, in favor of the intervention overall) and that, while healthcare costs were lower at €243/year for the entire intervention period, societal costs were higher, at €513/year vs usual care. The latter was thought to be “due to an unexpected rise in absenteeism that we think was most likely due to a small amount of outliers,” Dr. Hermans said. 

Nonetheless, using at willingness-to-pay threshold of €20,000/ quality-adjusted life year, he reported that the added value of patient-initiated care with remote monitoring yielded a potential net monetary benefit of +€322 from a healthcare perspective for the entire intervention period.

“We believe that these results support the fast-paced adoption of remote care interventions,” Dr. Hermans said. “In the context that I described earlier, of decreasing healthcare personnel and rising costs, we believe that this could be a valuable approach for follow-up for patients with stable axSpA.”

ReMonit was sponsored by Diakonhjemmet Hospital, and TeleSpA was sponsored by Maastricht University Medical Center, with funding from the Dutch Arthritis Society. Dr. Berg and Dr. Hermans had no relevant conflicts of interest to report.

A version of this article first appeared on Medscape.com.

Editor’s Note: This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.