Osteoarthritis

VIENNA — An intervention consisting of a plant-based diet, exercise, and sleep and stress advice improved pain, stiffness, and physical function in people with knee and/or hip osteoarthritis (OA) and metabolic syndrome, while in patients with rheumatoid arthritis (RA), disease activity improved significantly, and medication use was reduced.

At the annual European Congress of Rheumatology, Carlijn Wagenaar, MD, a PhD candidate in Clinical Immunology and Rheumatology at Amsterdam University Medical Center, presented 2-year extension study results for OA and RA and an overview of the possible biological mechanisms underpinning the plant-based intervention in RA.

“At 2 years, RA patients on the PFJ [Plants for Joints] intervention resulted in a significant improvement in disease activity of RA, and these outcomes were maintained 2 years after program end,” Dr. Wagenaar reported.

“Some initial improvements in body composition and metabolic outcomes were also maintained at the end of the 2-year extension phase, and there was a net decrease in antirheumatic medication use,” she continued.

In the patients with OA, Dr. Wagenaar said the PFJ intervention improved pain, stiffness, and physical function in people with knee and/or hip OA and metabolic syndrome. “In the 2-year extension study, these effects were maintained, and we saw lasting body composition changes and a decrease in cholesterol-lowering medications. There was also high acceptability of the program; the study shows long-term maintenance of clinically relevant effects.”
 

Significant Improvement in OA Pain, Stiffness, Physical Function

In the OA randomized controlled trial, 64 people with hip and/or knee OA and metabolic syndrome were randomized to the PFJ intervention or usual care (waitlist control group). A total of 62 participants (including those in the control group previously) entered the long-term effectiveness study, and 44 had 2 years of follow-up data for analysis. Twenty participants dropped out, with most being unreachable or too busy.

“The PFJ program is a theoretical and practical program where people learn about and follow a whole food, plant-based diet, and receive advice on sleep and stress management and exercise,” said Dr. Wagenaar.

The program lasted 16 weeks with group sessions of 6-12 participants. The diet was a plant-based version of the Dutch dietary guidelines with a focus on unprocessed food. It was rich in whole grains, legumes, nuts, seeds, fruit, and vegetables, but without calorie restrictions and participants had one-to-one contact with a dietitian. The exercise advice followed the Dutch exercise guidelines, which advise 150 minutes of moderate to intense exercise per week, as well as twice-weekly muscle strength exercises, noted Dr. Wagenaar.

The 2-year follow-up study involved twice-yearly visits and six adherence-promoting webinars per year, as well as monthly newsletters. Researchers also monitored changes in medication intensity (classified as “increased,” “stable,” or “decreased/stopped”) between the start of the PFJ intervention and end of the 2-year extension study, and they were grouped into medications for pain, blood pressure, glucose, and cholesterol.

Participants were encouraged to try to avoid making changes to medication during the intervention phase, but they could do so during the 2-year extension study, said Dr. Wagenaar. In fact, the researchers actively monitored and quantified medication changes between the start of the PFJ intervention and end of the 2-year follow-up period.

Patients in the 16-week trial had an average age of 64 years, 84% were women, and their mean body mass index (BMI) was 33 kg/m². A total of 73% had knee OA and 78% hip OA, and their mean WOMAC score was 38.2, indicative of moderate to severe OA.

In participants who completed the 2-year extension study, the primary outcome (WOMAC score for mean stiffness and physical function) showed a significant improvement of −9.1 (95% CI, −12.8 to −5.3; P < .0001) compared with the start of the PFJ intervention.

“Looking at individual components of the WOMAC score — pain, stiffness, and physical function — we found these also all significantly improved at the end of the 2-year extension phase,” reported Dr. Wagenaar.

She added that after 2 years, there were significant improvements in weight loss (from 94.9 to 92.1 kg), BMI (from 33.3 to 32 kg/m²), and waist circumference (from 110 to 106.7 cm).

By the end of the trial and at 1 year of the extension study, there were significant improvements in A1c, fasting blood glucose, and low-density lipoprotein cholesterol, but at 2 years, these were no longer significant.

Regarding medications use, Dr. Wagenaar reported that, overall, there was no net change in use of pain, glucose-lowering, or hypertension medications, but 44% of patients using cholesterol-lowering medications were able to lower their dose or stop them.
 

Disease Activity Improvement and Medication Reduction in RA

Turning to the study of the intervention in patients with RA, 77 people (DAS28 ≥ 2.6 and ≤ 5.1, mild to moderate disease) were randomized to receive either the PFJ intervention in addition to usual care or only usual care (control group). Of these, 48 (62%) from both the intervention and control groups also completed the 2-year follow-up. The details of the PFJ intervention and the extension study for RA were the same as for the OA patient group.

Dr. Wagenaar commented on how they tried to individualize the exercise part of the program. “We noticed many of the RA patients asked too much of their body, while in contrast, those with OA were too hesitant,” she said. “We decided to focus on people’s own physical barriers, and we wanted to protect these. Sometimes, people needed to move more, and at other times, we had to tell people to slow down. Often, we advised people to move more by integrating exercise into their daily life.”

Similar to the OA study, patients were asked to try to avoid changing their medications in the 16-week study. “In the extension study, they were encouraged to reduce their medication in collaboration with their rheumatologist,” explained Wagenaar, who monitored any changes.

Differences were quantified according to medication groups comprising rheumatic medications, as well as pain, blood pressure, glucose-lowering, and cholesterol medications, and changes were categorized as increased, stable, or decreased/stopped.

Again, participants were mostly women (92%) with an average age of 55 years, BMI of 26 kg/m², and DAS28 of 3.85 at baseline. Dropout reasons were similar to those for OA, and over 85% of participants were on medications.

During the 16-week trial period, the DAS28 changed more in the intervention participants than in the controls, and after 2 years of follow-up, DAS28 was significantly lower than baseline with a mean difference of −0.9 (95% CI, −1.2 to −0.6; P < .0001).

“Comparing with the literature, the drop in DAS28 was similar to that seen with medication, so it’s a very significant reduction,” remarked Dr. Wagenaar.

Mean tender joint count dropped from 3 to 0, and general health components of the DAS28 improved significantly over the intervention and over the 2-year follow-up, whereas there was no significant difference in the already low erythrocyte sedimentation rate and swollen joint count compared with baseline. C-reactive protein (CRP) changed from 3.2 to 1.3 mg/L over the 2-year follow-up. High-density lipoprotein increased from 1.6 to 1.8 mmol/L.

A total of 44% of people using antirheumatic medication decreased or stopped them after the 2-year extension.

Dr. Wagenaar went on to say that focus group findings suggested that “participants were very enthusiastic about the program despite it largely involving lifestyle change, and this is reflected in our low dropout rates after the trial and 1-year extension [20% for OA and RA].” There were more dropouts in year 2 of the extension.

In an interview, Dr. Wagenaar explained why she felt the program had been so well received. “People in the program felt like they had more control over their disease, and they felt listened to.”
 

Mechanisms Underpinning PFJ

Dr. Wagenaar and colleagues also sought to determine the possible mechanisms underlying the clinical effects of the plant-based diet on RA. “With RA, we have the mucosal origins hypothesis, which suggests RA is triggered at the mucosal site [of the gut] in genetically predisposed individuals, and this consequently transfers to the synovial [fluid in] joints,” she said.

“On top of this, we know that fiber protects our gut barrier and therefore reduces inflammation. The PFJ intervention is a very high-fiber program, so our hypothesis is that it might help [strengthen] the barrier,” she explained.

Dr. Wagenaar and colleagues collected fecal samples from patients and measured the albumin and calprotectin in them, which are both indicators of the gut barrier function. The researchers analyzed metabolomic data and found that fecal albumin — considered a gut barrier integrity marker — decreased significantly in the intervention group. In patients with RA, this improvement corresponded with an improvement in DAS28, the researchers reported in a poster at the meeting.

“Patients who had the greatest improvement in their gut barrier function also showed the greatest improvement in the DAS28 score, suggestive of a possible link between gut barrier improvement and clinical effects.”

They did not identify any change in calprotectin, an inflammation marker, but Dr. Wagenaar said this might change later. “We found that in those on the intervention, at 4 months, the CRP wasn’t reduced, but 1 year later it was.”

The metabolite lenticin, a lentil intake biomarker considered protective against inflammation and osteoclastic differentiation, also increased. Tryptophan was also reduced in people on the PFJ intervention.

Fernando Estevez-Lopez, PhD, a sports scientist at Harvard T.H. Chan School of Public Health, Boston, who specializes in physical activity and behavioral change in rheumatology patients, co-moderated the session and remarked that, “In this study, they did a brilliant job with encouraging participants to follow the program. The design and methods were really good — the sample size was good, and they followed people up. Also, these researchers come from Reade [a medical research center in Amsterdam University Medical Center] where they are well known for applying their research findings to the clinic,” he said.

“In terms of physical activity, we really mean increasing the time spent moving, for example, gentle activity such as walking, or changing behaviors in people with OA and RA. We don’t want them to have more pain the next day.”

Dr. Wagenaar reported receiving a grant from ZonMw (The Netherlands Organization for Health Research and Development). She and colleagues hold shares in Plants for Health, a limited liability company. Dr. Estevez-Lopez reported having no relevant disclosures.
 

A version of this article appeared on Medscape.com.

VIENNA — An intervention consisting of a plant-based diet, exercise, and sleep and stress advice improved pain, stiffness, and physical function in people with knee and/or hip osteoarthritis (OA) and metabolic syndrome, while in patients with rheumatoid arthritis (RA), disease activity improved significantly, and medication use was reduced.

At the annual European Congress of Rheumatology, Carlijn Wagenaar, MD, a PhD candidate in Clinical Immunology and Rheumatology at Amsterdam University Medical Center, presented 2-year extension study results for OA and RA and an overview of the possible biological mechanisms underpinning the plant-based intervention in RA.

“At 2 years, RA patients on the PFJ [Plants for Joints] intervention resulted in a significant improvement in disease activity of RA, and these outcomes were maintained 2 years after program end,” Dr. Wagenaar reported.

“Some initial improvements in body composition and metabolic outcomes were also maintained at the end of the 2-year extension phase, and there was a net decrease in antirheumatic medication use,” she continued.

In the patients with OA, Dr. Wagenaar said the PFJ intervention improved pain, stiffness, and physical function in people with knee and/or hip OA and metabolic syndrome. “In the 2-year extension study, these effects were maintained, and we saw lasting body composition changes and a decrease in cholesterol-lowering medications. There was also high acceptability of the program; the study shows long-term maintenance of clinically relevant effects.”
 

Significant Improvement in OA Pain, Stiffness, Physical Function

In the OA randomized controlled trial, 64 people with hip and/or knee OA and metabolic syndrome were randomized to the PFJ intervention or usual care (waitlist control group). A total of 62 participants (including those in the control group previously) entered the long-term effectiveness study, and 44 had 2 years of follow-up data for analysis. Twenty participants dropped out, with most being unreachable or too busy.

“The PFJ program is a theoretical and practical program where people learn about and follow a whole food, plant-based diet, and receive advice on sleep and stress management and exercise,” said Dr. Wagenaar.

The program lasted 16 weeks with group sessions of 6-12 participants. The diet was a plant-based version of the Dutch dietary guidelines with a focus on unprocessed food. It was rich in whole grains, legumes, nuts, seeds, fruit, and vegetables, but without calorie restrictions and participants had one-to-one contact with a dietitian. The exercise advice followed the Dutch exercise guidelines, which advise 150 minutes of moderate to intense exercise per week, as well as twice-weekly muscle strength exercises, noted Dr. Wagenaar.

The 2-year follow-up study involved twice-yearly visits and six adherence-promoting webinars per year, as well as monthly newsletters. Researchers also monitored changes in medication intensity (classified as “increased,” “stable,” or “decreased/stopped”) between the start of the PFJ intervention and end of the 2-year extension study, and they were grouped into medications for pain, blood pressure, glucose, and cholesterol.

Participants were encouraged to try to avoid making changes to medication during the intervention phase, but they could do so during the 2-year extension study, said Dr. Wagenaar. In fact, the researchers actively monitored and quantified medication changes between the start of the PFJ intervention and end of the 2-year follow-up period.

Patients in the 16-week trial had an average age of 64 years, 84% were women, and their mean body mass index (BMI) was 33 kg/m². A total of 73% had knee OA and 78% hip OA, and their mean WOMAC score was 38.2, indicative of moderate to severe OA.

In participants who completed the 2-year extension study, the primary outcome (WOMAC score for mean stiffness and physical function) showed a significant improvement of −9.1 (95% CI, −12.8 to −5.3; P < .0001) compared with the start of the PFJ intervention.

“Looking at individual components of the WOMAC score — pain, stiffness, and physical function — we found these also all significantly improved at the end of the 2-year extension phase,” reported Dr. Wagenaar.

She added that after 2 years, there were significant improvements in weight loss (from 94.9 to 92.1 kg), BMI (from 33.3 to 32 kg/m²), and waist circumference (from 110 to 106.7 cm).

By the end of the trial and at 1 year of the extension study, there were significant improvements in A1c, fasting blood glucose, and low-density lipoprotein cholesterol, but at 2 years, these were no longer significant.

Regarding medications use, Dr. Wagenaar reported that, overall, there was no net change in use of pain, glucose-lowering, or hypertension medications, but 44% of patients using cholesterol-lowering medications were able to lower their dose or stop them.
 

Disease Activity Improvement and Medication Reduction in RA

Turning to the study of the intervention in patients with RA, 77 people (DAS28 ≥ 2.6 and ≤ 5.1, mild to moderate disease) were randomized to receive either the PFJ intervention in addition to usual care or only usual care (control group). Of these, 48 (62%) from both the intervention and control groups also completed the 2-year follow-up. The details of the PFJ intervention and the extension study for RA were the same as for the OA patient group.

Dr. Wagenaar commented on how they tried to individualize the exercise part of the program. “We noticed many of the RA patients asked too much of their body, while in contrast, those with OA were too hesitant,” she said. “We decided to focus on people’s own physical barriers, and we wanted to protect these. Sometimes, people needed to move more, and at other times, we had to tell people to slow down. Often, we advised people to move more by integrating exercise into their daily life.”

Similar to the OA study, patients were asked to try to avoid changing their medications in the 16-week study. “In the extension study, they were encouraged to reduce their medication in collaboration with their rheumatologist,” explained Wagenaar, who monitored any changes.

Differences were quantified according to medication groups comprising rheumatic medications, as well as pain, blood pressure, glucose-lowering, and cholesterol medications, and changes were categorized as increased, stable, or decreased/stopped.

Again, participants were mostly women (92%) with an average age of 55 years, BMI of 26 kg/m², and DAS28 of 3.85 at baseline. Dropout reasons were similar to those for OA, and over 85% of participants were on medications.

During the 16-week trial period, the DAS28 changed more in the intervention participants than in the controls, and after 2 years of follow-up, DAS28 was significantly lower than baseline with a mean difference of −0.9 (95% CI, −1.2 to −0.6; P < .0001).

“Comparing with the literature, the drop in DAS28 was similar to that seen with medication, so it’s a very significant reduction,” remarked Dr. Wagenaar.

Mean tender joint count dropped from 3 to 0, and general health components of the DAS28 improved significantly over the intervention and over the 2-year follow-up, whereas there was no significant difference in the already low erythrocyte sedimentation rate and swollen joint count compared with baseline. C-reactive protein (CRP) changed from 3.2 to 1.3 mg/L over the 2-year follow-up. High-density lipoprotein increased from 1.6 to 1.8 mmol/L.

A total of 44% of people using antirheumatic medication decreased or stopped them after the 2-year extension.

Dr. Wagenaar went on to say that focus group findings suggested that “participants were very enthusiastic about the program despite it largely involving lifestyle change, and this is reflected in our low dropout rates after the trial and 1-year extension [20% for OA and RA].” There were more dropouts in year 2 of the extension.

In an interview, Dr. Wagenaar explained why she felt the program had been so well received. “People in the program felt like they had more control over their disease, and they felt listened to.”
 

Mechanisms Underpinning PFJ

Dr. Wagenaar and colleagues also sought to determine the possible mechanisms underlying the clinical effects of the plant-based diet on RA. “With RA, we have the mucosal origins hypothesis, which suggests RA is triggered at the mucosal site [of the gut] in genetically predisposed individuals, and this consequently transfers to the synovial [fluid in] joints,” she said.

“On top of this, we know that fiber protects our gut barrier and therefore reduces inflammation. The PFJ intervention is a very high-fiber program, so our hypothesis is that it might help [strengthen] the barrier,” she explained.

Dr. Wagenaar and colleagues collected fecal samples from patients and measured the albumin and calprotectin in them, which are both indicators of the gut barrier function. The researchers analyzed metabolomic data and found that fecal albumin — considered a gut barrier integrity marker — decreased significantly in the intervention group. In patients with RA, this improvement corresponded with an improvement in DAS28, the researchers reported in a poster at the meeting.

“Patients who had the greatest improvement in their gut barrier function also showed the greatest improvement in the DAS28 score, suggestive of a possible link between gut barrier improvement and clinical effects.”

They did not identify any change in calprotectin, an inflammation marker, but Dr. Wagenaar said this might change later. “We found that in those on the intervention, at 4 months, the CRP wasn’t reduced, but 1 year later it was.”

The metabolite lenticin, a lentil intake biomarker considered protective against inflammation and osteoclastic differentiation, also increased. Tryptophan was also reduced in people on the PFJ intervention.

Fernando Estevez-Lopez, PhD, a sports scientist at Harvard T.H. Chan School of Public Health, Boston, who specializes in physical activity and behavioral change in rheumatology patients, co-moderated the session and remarked that, “In this study, they did a brilliant job with encouraging participants to follow the program. The design and methods were really good — the sample size was good, and they followed people up. Also, these researchers come from Reade [a medical research center in Amsterdam University Medical Center] where they are well known for applying their research findings to the clinic,” he said.

“In terms of physical activity, we really mean increasing the time spent moving, for example, gentle activity such as walking, or changing behaviors in people with OA and RA. We don’t want them to have more pain the next day.”

Dr. Wagenaar reported receiving a grant from ZonMw (The Netherlands Organization for Health Research and Development). She and colleagues hold shares in Plants for Health, a limited liability company. Dr. Estevez-Lopez reported having no relevant disclosures.
 

A version of this article appeared on Medscape.com.

VIENNA — An intervention consisting of a plant-based diet, exercise, and sleep and stress advice improved pain, stiffness, and physical function in people with knee and/or hip osteoarthritis (OA) and metabolic syndrome, while in patients with rheumatoid arthritis (RA), disease activity improved significantly, and medication use was reduced.

At the annual European Congress of Rheumatology, Carlijn Wagenaar, MD, a PhD candidate in Clinical Immunology and Rheumatology at Amsterdam University Medical Center, presented 2-year extension study results for OA and RA and an overview of the possible biological mechanisms underpinning the plant-based intervention in RA.

“At 2 years, RA patients on the PFJ [Plants for Joints] intervention resulted in a significant improvement in disease activity of RA, and these outcomes were maintained 2 years after program end,” Dr. Wagenaar reported.

“Some initial improvements in body composition and metabolic outcomes were also maintained at the end of the 2-year extension phase, and there was a net decrease in antirheumatic medication use,” she continued.

In the patients with OA, Dr. Wagenaar said the PFJ intervention improved pain, stiffness, and physical function in people with knee and/or hip OA and metabolic syndrome. “In the 2-year extension study, these effects were maintained, and we saw lasting body composition changes and a decrease in cholesterol-lowering medications. There was also high acceptability of the program; the study shows long-term maintenance of clinically relevant effects.”
 

Significant Improvement in OA Pain, Stiffness, Physical Function

In the OA randomized controlled trial, 64 people with hip and/or knee OA and metabolic syndrome were randomized to the PFJ intervention or usual care (waitlist control group). A total of 62 participants (including those in the control group previously) entered the long-term effectiveness study, and 44 had 2 years of follow-up data for analysis. Twenty participants dropped out, with most being unreachable or too busy.

“The PFJ program is a theoretical and practical program where people learn about and follow a whole food, plant-based diet, and receive advice on sleep and stress management and exercise,” said Dr. Wagenaar.

The program lasted 16 weeks with group sessions of 6-12 participants. The diet was a plant-based version of the Dutch dietary guidelines with a focus on unprocessed food. It was rich in whole grains, legumes, nuts, seeds, fruit, and vegetables, but without calorie restrictions and participants had one-to-one contact with a dietitian. The exercise advice followed the Dutch exercise guidelines, which advise 150 minutes of moderate to intense exercise per week, as well as twice-weekly muscle strength exercises, noted Dr. Wagenaar.

The 2-year follow-up study involved twice-yearly visits and six adherence-promoting webinars per year, as well as monthly newsletters. Researchers also monitored changes in medication intensity (classified as “increased,” “stable,” or “decreased/stopped”) between the start of the PFJ intervention and end of the 2-year extension study, and they were grouped into medications for pain, blood pressure, glucose, and cholesterol.

Participants were encouraged to try to avoid making changes to medication during the intervention phase, but they could do so during the 2-year extension study, said Dr. Wagenaar. In fact, the researchers actively monitored and quantified medication changes between the start of the PFJ intervention and end of the 2-year follow-up period.

Patients in the 16-week trial had an average age of 64 years, 84% were women, and their mean body mass index (BMI) was 33 kg/m². A total of 73% had knee OA and 78% hip OA, and their mean WOMAC score was 38.2, indicative of moderate to severe OA.

In participants who completed the 2-year extension study, the primary outcome (WOMAC score for mean stiffness and physical function) showed a significant improvement of −9.1 (95% CI, −12.8 to −5.3; P < .0001) compared with the start of the PFJ intervention.

“Looking at individual components of the WOMAC score — pain, stiffness, and physical function — we found these also all significantly improved at the end of the 2-year extension phase,” reported Dr. Wagenaar.

She added that after 2 years, there were significant improvements in weight loss (from 94.9 to 92.1 kg), BMI (from 33.3 to 32 kg/m²), and waist circumference (from 110 to 106.7 cm).

By the end of the trial and at 1 year of the extension study, there were significant improvements in A1c, fasting blood glucose, and low-density lipoprotein cholesterol, but at 2 years, these were no longer significant.

Regarding medications use, Dr. Wagenaar reported that, overall, there was no net change in use of pain, glucose-lowering, or hypertension medications, but 44% of patients using cholesterol-lowering medications were able to lower their dose or stop them.
 

Disease Activity Improvement and Medication Reduction in RA

Turning to the study of the intervention in patients with RA, 77 people (DAS28 ≥ 2.6 and ≤ 5.1, mild to moderate disease) were randomized to receive either the PFJ intervention in addition to usual care or only usual care (control group). Of these, 48 (62%) from both the intervention and control groups also completed the 2-year follow-up. The details of the PFJ intervention and the extension study for RA were the same as for the OA patient group.

Dr. Wagenaar commented on how they tried to individualize the exercise part of the program. “We noticed many of the RA patients asked too much of their body, while in contrast, those with OA were too hesitant,” she said. “We decided to focus on people’s own physical barriers, and we wanted to protect these. Sometimes, people needed to move more, and at other times, we had to tell people to slow down. Often, we advised people to move more by integrating exercise into their daily life.”

Similar to the OA study, patients were asked to try to avoid changing their medications in the 16-week study. “In the extension study, they were encouraged to reduce their medication in collaboration with their rheumatologist,” explained Wagenaar, who monitored any changes.

Differences were quantified according to medication groups comprising rheumatic medications, as well as pain, blood pressure, glucose-lowering, and cholesterol medications, and changes were categorized as increased, stable, or decreased/stopped.

Again, participants were mostly women (92%) with an average age of 55 years, BMI of 26 kg/m², and DAS28 of 3.85 at baseline. Dropout reasons were similar to those for OA, and over 85% of participants were on medications.

During the 16-week trial period, the DAS28 changed more in the intervention participants than in the controls, and after 2 years of follow-up, DAS28 was significantly lower than baseline with a mean difference of −0.9 (95% CI, −1.2 to −0.6; P < .0001).

“Comparing with the literature, the drop in DAS28 was similar to that seen with medication, so it’s a very significant reduction,” remarked Dr. Wagenaar.

Mean tender joint count dropped from 3 to 0, and general health components of the DAS28 improved significantly over the intervention and over the 2-year follow-up, whereas there was no significant difference in the already low erythrocyte sedimentation rate and swollen joint count compared with baseline. C-reactive protein (CRP) changed from 3.2 to 1.3 mg/L over the 2-year follow-up. High-density lipoprotein increased from 1.6 to 1.8 mmol/L.

A total of 44% of people using antirheumatic medication decreased or stopped them after the 2-year extension.

Dr. Wagenaar went on to say that focus group findings suggested that “participants were very enthusiastic about the program despite it largely involving lifestyle change, and this is reflected in our low dropout rates after the trial and 1-year extension [20% for OA and RA].” There were more dropouts in year 2 of the extension.

In an interview, Dr. Wagenaar explained why she felt the program had been so well received. “People in the program felt like they had more control over their disease, and they felt listened to.”
 

Mechanisms Underpinning PFJ

Dr. Wagenaar and colleagues also sought to determine the possible mechanisms underlying the clinical effects of the plant-based diet on RA. “With RA, we have the mucosal origins hypothesis, which suggests RA is triggered at the mucosal site [of the gut] in genetically predisposed individuals, and this consequently transfers to the synovial [fluid in] joints,” she said.

“On top of this, we know that fiber protects our gut barrier and therefore reduces inflammation. The PFJ intervention is a very high-fiber program, so our hypothesis is that it might help [strengthen] the barrier,” she explained.

Dr. Wagenaar and colleagues collected fecal samples from patients and measured the albumin and calprotectin in them, which are both indicators of the gut barrier function. The researchers analyzed metabolomic data and found that fecal albumin — considered a gut barrier integrity marker — decreased significantly in the intervention group. In patients with RA, this improvement corresponded with an improvement in DAS28, the researchers reported in a poster at the meeting.

“Patients who had the greatest improvement in their gut barrier function also showed the greatest improvement in the DAS28 score, suggestive of a possible link between gut barrier improvement and clinical effects.”

They did not identify any change in calprotectin, an inflammation marker, but Dr. Wagenaar said this might change later. “We found that in those on the intervention, at 4 months, the CRP wasn’t reduced, but 1 year later it was.”

The metabolite lenticin, a lentil intake biomarker considered protective against inflammation and osteoclastic differentiation, also increased. Tryptophan was also reduced in people on the PFJ intervention.

Fernando Estevez-Lopez, PhD, a sports scientist at Harvard T.H. Chan School of Public Health, Boston, who specializes in physical activity and behavioral change in rheumatology patients, co-moderated the session and remarked that, “In this study, they did a brilliant job with encouraging participants to follow the program. The design and methods were really good — the sample size was good, and they followed people up. Also, these researchers come from Reade [a medical research center in Amsterdam University Medical Center] where they are well known for applying their research findings to the clinic,” he said.

“In terms of physical activity, we really mean increasing the time spent moving, for example, gentle activity such as walking, or changing behaviors in people with OA and RA. We don’t want them to have more pain the next day.”

Dr. Wagenaar reported receiving a grant from ZonMw (The Netherlands Organization for Health Research and Development). She and colleagues hold shares in Plants for Health, a limited liability company. Dr. Estevez-Lopez reported having no relevant disclosures.
 

A version of this article appeared on Medscape.com.

The European Alliance of Associations for Rheumatology (EULAR) 2024 European Congress of Rheumatology annual meeting is about to take place in Vienna, Austria. From June 12 to 15, some of the world’s leading researchers and clinicians will convene to present and learn about data on some of the new and innovative treatments for people with rheumatic and musculoskeletal diseases (RMDs) as well as to discuss how to use and optimize existing approaches. 

Ahead of the Congress, this news organization asked the Congress Committee’s Scientific Programme Chair Caroline Ospelt, MD, PhD, and Abstract Chair Christian Dejaco, MD, PhD, MBA, to discuss some of their highlights of this year’s meeting.
 

From Bench to Bedside

“For me, the beauty at EULAR is really that you have the latest on basic research, how this can be translated in clinical trials, and then the last step would be how EULAR recommends it to be used in clinical practice,” Dr. Ospelt, professor of experimental rheumatology at University Hospital Zurich, said in an interview.  

University Hospital Zurich

“So, if you go to EULAR continuously, you can actually follow the whole story of how novelty comes into clinical practice,” she added. 

In a separate interview, Dr. Dejaco, a consultant rheumatologist and associate professor at the Medical University of Graz in Austria, said: “There are several new drug trials that are going to be presented.” 

One of his highlights on the use of new drugs for the treatment of giant cell arteritis will be the phase 3 SELECT-GCA trial of the Janus kinase (JAK) inhibitor upadacitinib (LBA0001).

“It’s a trial that hopefully will lead to the approval of this drug in this indication,” Dr. Dejaco said.

EULAR

Late-Breaking Abstracts

Dr. Ospelt noted: “We had a lot of good late-breaking abstracts this year.” 

Some of these include: 

• Real-world data on the comparative effectiveness of five different classes of drugs used to treat psoriatic arthritis (PsA; LBA0002) 
• The 16-week results of a phase 2b/3 study with the novel interleukin (IL)–17A inhibitor izokibep in people with PsA (LBA0005)
• Data from the COSPIRIT-JIA trial on the efficacy and safety of ixekizumab (Taltz) in juvenile idiopathic arthritis (LBA0009)
• Phase 2 data on the safety and efficacy of the CD38-targeting monoclonal antibody daratumumab in systemic lupus erythematosus (LBA0007)
• Results of the phase 2 DAHLIAS study of the anti–neonatal Fc receptor monoclonal antibody nipocalimab in people with primary Sjögren disease (LBA0010) 
• Safety and immunogenicity data from a phase 1 study of an active anti–IL-6 immunotherapy in people with knee osteoarthritis (LBA0011)

The latter is “really interesting,” Dr. Ospelt said. As of now, there is no approved treatment for osteoarthritis, and there is no immunotherapy, “so this would be the first.” 

But it’s not just the late-breaker abstracts to look out for. Dr. Dejaco highlighted two abstracts that will be presented during the Abstract Plenary: 

• A phase 3 study of a new selective JAK1 inhibitor, SHR0302, in rheumatoid arthritis (OP0037)
• A multi-omics analysis and targeted gene-editing study in people with , which causes inflammatory and hematologic changes (OP0073)

Of the latter, he said, “this disease is still incompletely understood, and this abstract really helps to better understand the mechanisms underlying this disease.”
 

One to Watch: CAR T-Cell Therapy 

Dr. Ospelt said that the scientific program is about 80% clinical and 20% basic science overall. However, more sessions are being held jointly because data are starting to move from the bench to bedside. 

One of the basic science areas that has had “a real buzz” around it and is now producing results in the clinic is the use of chimeric antigen receptor (CAR) T cells. In one of the first, and perhaps aptly titled What Is New, or WIN, sessions of the congress, Georg Schett, MD, vice president of research at Friedrich-Alexander-Universität Erlangen-Nüremberg in Germany, will discuss the use of CAR T-cell therapy for inflammatory RMDs. There are also multiple abstract presentations on this topic. 

In-depth tissue analysis and prediction of treatment response is another interesting approach, Dr. Ospelt said. “I think that’s the way to go, that we come from the blood, we go into the tissue.” A “very nice” example of this approach will be presented during the Abstract Plenary session on Wednesday, June 12, looking at how synovial tissue macrophages may be able to give information on likely treatment response in treatment-naive rheumatoid arthritis (OP0062). There are also some further findings related to the tissue biopsy–driven treatment trial R4RA that are being presented at the meeting (OP0218, OP0242, and POS0351).
 

EULAR Highlighted Sessions

Among the highlighted sessions on the EULAR 2024 website is one on axial involvement in PsA and spondyloarthritis (SpA). 

“Axial involvement in psoriatic arthritis and peripheral involvement in axial spondyloarthritis is quite a hot topic at the moment,” Dr. Ospelt said. There are lots of questions: “How connected are they? How different are they? Do we need different treatment for axial involvement compared to peripheral involvement?” 

Another EULAR highlighted session is the 75th anniversary of glucocorticoid treatment, during which Past President of EULAR and Emeritus Professor of Rheumatology Josef S. Smolen, MD, will overview the “past, present, and future” of glucocorticoids in RMDs. Consultant rheumatologist Frank Buttgereit, MD, from the German Rheumatism Research Center in Berlin, will discuss the practicalities of using these drugs in clinical practice.

Dr. Dejaco noted: “Glucocorticoids have been one of the most important treatments for a very long time, and they’re still the most important treatment for the acute treatment of systemic inflammatory diseases.”

For a long time, there was no alternative to using steroids, he added, but steroid-sparing options now exist, and there will be data presented on a new type of drug that could potentially be used to control cortisol levels in the body (OP0335).
 

Recommendations and More

Dr. Ospelt and Dr. Dejaco both pointed out other sessions that are likely to be very popular, such as the first and second EULAR Recommendations sessions, a session on rheumatoid arthritis prevention, as well as the many presentations and sessions on digital health and nonpharmacologic interventions such as exercise. 

With over 5242 submitted abstracts, there is going to be no shortage of data being presented at EULAR 2024. Alongside the traditional abstract submission categories, this year there is a new clinical case reports category. 

“We had about 578 submissions for that category,” Dr. Dejaco said. There were 3315 abstracts submitted for the clinical research category, 812 for the basic and translational research category, 283 from health professionals in rheumatology, 152 from patient groups, and 102 in the field of pediatric rheumatology.
 

Join in On-Site, Watch on Demand 

EULAR 2024 reverts to an on-site–only meeting this year. Some of the more lighthearted yet educational elements of the program for those attending include the second edition of the EMEUNET Rheumatology Quiz and, new for this year, two escape rooms. These rooms will provide an interactive experience where small teams will have to solve rheumatologic conundrums in order to escape the room within the hour, Dr. Dejaco explained. There will also be a morning run on Friday, June 14. “It’s not a race, it’s simply to meet and run together,” Dr. Dejaco said. 

But if you cannot make the congress in person, the EULAR 2024 Livestream will be broadcasting throughout the congress. Anyone registered by June 30 will have on-demand access to the recorded content from June 17 until December 31, 2024. 

Abstracts for the meeting will be published as a supplement to Annals of the Rheumatic Diseases, the official journal of EULAR. 

Dr. Ospelt reported no relevant financial relationships. Dr. Dejaco has received consulting/speaker fees from AbbVie, Eli Lilly, Janssen, Sparrow, Novartis, Pfizer, Roche, Galapagos, and Sanofi.

A version of this article appeared on Medscape.com.

The European Alliance of Associations for Rheumatology (EULAR) 2024 European Congress of Rheumatology annual meeting is about to take place in Vienna, Austria. From June 12 to 15, some of the world’s leading researchers and clinicians will convene to present and learn about data on some of the new and innovative treatments for people with rheumatic and musculoskeletal diseases (RMDs) as well as to discuss how to use and optimize existing approaches. 

Ahead of the Congress, this news organization asked the Congress Committee’s Scientific Programme Chair Caroline Ospelt, MD, PhD, and Abstract Chair Christian Dejaco, MD, PhD, MBA, to discuss some of their highlights of this year’s meeting.
 

From Bench to Bedside

“For me, the beauty at EULAR is really that you have the latest on basic research, how this can be translated in clinical trials, and then the last step would be how EULAR recommends it to be used in clinical practice,” Dr. Ospelt, professor of experimental rheumatology at University Hospital Zurich, said in an interview.  

University Hospital Zurich

“So, if you go to EULAR continuously, you can actually follow the whole story of how novelty comes into clinical practice,” she added. 

In a separate interview, Dr. Dejaco, a consultant rheumatologist and associate professor at the Medical University of Graz in Austria, said: “There are several new drug trials that are going to be presented.” 

One of his highlights on the use of new drugs for the treatment of giant cell arteritis will be the phase 3 SELECT-GCA trial of the Janus kinase (JAK) inhibitor upadacitinib (LBA0001).

“It’s a trial that hopefully will lead to the approval of this drug in this indication,” Dr. Dejaco said.

EULAR

Late-Breaking Abstracts

Dr. Ospelt noted: “We had a lot of good late-breaking abstracts this year.” 

Some of these include: 

• Real-world data on the comparative effectiveness of five different classes of drugs used to treat psoriatic arthritis (PsA; LBA0002) 
• The 16-week results of a phase 2b/3 study with the novel interleukin (IL)–17A inhibitor izokibep in people with PsA (LBA0005)
• Data from the COSPIRIT-JIA trial on the efficacy and safety of ixekizumab (Taltz) in juvenile idiopathic arthritis (LBA0009)
• Phase 2 data on the safety and efficacy of the CD38-targeting monoclonal antibody daratumumab in systemic lupus erythematosus (LBA0007)
• Results of the phase 2 DAHLIAS study of the anti–neonatal Fc receptor monoclonal antibody nipocalimab in people with primary Sjögren disease (LBA0010) 
• Safety and immunogenicity data from a phase 1 study of an active anti–IL-6 immunotherapy in people with knee osteoarthritis (LBA0011)

The latter is “really interesting,” Dr. Ospelt said. As of now, there is no approved treatment for osteoarthritis, and there is no immunotherapy, “so this would be the first.” 

But it’s not just the late-breaker abstracts to look out for. Dr. Dejaco highlighted two abstracts that will be presented during the Abstract Plenary: 

• A phase 3 study of a new selective JAK1 inhibitor, SHR0302, in rheumatoid arthritis (OP0037)
• A multi-omics analysis and targeted gene-editing study in people with , which causes inflammatory and hematologic changes (OP0073)

Of the latter, he said, “this disease is still incompletely understood, and this abstract really helps to better understand the mechanisms underlying this disease.”
 

One to Watch: CAR T-Cell Therapy 

Dr. Ospelt said that the scientific program is about 80% clinical and 20% basic science overall. However, more sessions are being held jointly because data are starting to move from the bench to bedside. 

One of the basic science areas that has had “a real buzz” around it and is now producing results in the clinic is the use of chimeric antigen receptor (CAR) T cells. In one of the first, and perhaps aptly titled What Is New, or WIN, sessions of the congress, Georg Schett, MD, vice president of research at Friedrich-Alexander-Universität Erlangen-Nüremberg in Germany, will discuss the use of CAR T-cell therapy for inflammatory RMDs. There are also multiple abstract presentations on this topic. 

In-depth tissue analysis and prediction of treatment response is another interesting approach, Dr. Ospelt said. “I think that’s the way to go, that we come from the blood, we go into the tissue.” A “very nice” example of this approach will be presented during the Abstract Plenary session on Wednesday, June 12, looking at how synovial tissue macrophages may be able to give information on likely treatment response in treatment-naive rheumatoid arthritis (OP0062). There are also some further findings related to the tissue biopsy–driven treatment trial R4RA that are being presented at the meeting (OP0218, OP0242, and POS0351).
 

EULAR Highlighted Sessions

Among the highlighted sessions on the EULAR 2024 website is one on axial involvement in PsA and spondyloarthritis (SpA). 

“Axial involvement in psoriatic arthritis and peripheral involvement in axial spondyloarthritis is quite a hot topic at the moment,” Dr. Ospelt said. There are lots of questions: “How connected are they? How different are they? Do we need different treatment for axial involvement compared to peripheral involvement?” 

Another EULAR highlighted session is the 75th anniversary of glucocorticoid treatment, during which Past President of EULAR and Emeritus Professor of Rheumatology Josef S. Smolen, MD, will overview the “past, present, and future” of glucocorticoids in RMDs. Consultant rheumatologist Frank Buttgereit, MD, from the German Rheumatism Research Center in Berlin, will discuss the practicalities of using these drugs in clinical practice.

Dr. Dejaco noted: “Glucocorticoids have been one of the most important treatments for a very long time, and they’re still the most important treatment for the acute treatment of systemic inflammatory diseases.”

For a long time, there was no alternative to using steroids, he added, but steroid-sparing options now exist, and there will be data presented on a new type of drug that could potentially be used to control cortisol levels in the body (OP0335).
 

Recommendations and More

Dr. Ospelt and Dr. Dejaco both pointed out other sessions that are likely to be very popular, such as the first and second EULAR Recommendations sessions, a session on rheumatoid arthritis prevention, as well as the many presentations and sessions on digital health and nonpharmacologic interventions such as exercise. 

With over 5242 submitted abstracts, there is going to be no shortage of data being presented at EULAR 2024. Alongside the traditional abstract submission categories, this year there is a new clinical case reports category. 

“We had about 578 submissions for that category,” Dr. Dejaco said. There were 3315 abstracts submitted for the clinical research category, 812 for the basic and translational research category, 283 from health professionals in rheumatology, 152 from patient groups, and 102 in the field of pediatric rheumatology.
 

Join in On-Site, Watch on Demand 

EULAR 2024 reverts to an on-site–only meeting this year. Some of the more lighthearted yet educational elements of the program for those attending include the second edition of the EMEUNET Rheumatology Quiz and, new for this year, two escape rooms. These rooms will provide an interactive experience where small teams will have to solve rheumatologic conundrums in order to escape the room within the hour, Dr. Dejaco explained. There will also be a morning run on Friday, June 14. “It’s not a race, it’s simply to meet and run together,” Dr. Dejaco said. 

But if you cannot make the congress in person, the EULAR 2024 Livestream will be broadcasting throughout the congress. Anyone registered by June 30 will have on-demand access to the recorded content from June 17 until December 31, 2024. 

Abstracts for the meeting will be published as a supplement to Annals of the Rheumatic Diseases, the official journal of EULAR. 

Dr. Ospelt reported no relevant financial relationships. Dr. Dejaco has received consulting/speaker fees from AbbVie, Eli Lilly, Janssen, Sparrow, Novartis, Pfizer, Roche, Galapagos, and Sanofi.

A version of this article appeared on Medscape.com.

The European Alliance of Associations for Rheumatology (EULAR) 2024 European Congress of Rheumatology annual meeting is about to take place in Vienna, Austria. From June 12 to 15, some of the world’s leading researchers and clinicians will convene to present and learn about data on some of the new and innovative treatments for people with rheumatic and musculoskeletal diseases (RMDs) as well as to discuss how to use and optimize existing approaches. 

Ahead of the Congress, this news organization asked the Congress Committee’s Scientific Programme Chair Caroline Ospelt, MD, PhD, and Abstract Chair Christian Dejaco, MD, PhD, MBA, to discuss some of their highlights of this year’s meeting.
 

From Bench to Bedside

“For me, the beauty at EULAR is really that you have the latest on basic research, how this can be translated in clinical trials, and then the last step would be how EULAR recommends it to be used in clinical practice,” Dr. Ospelt, professor of experimental rheumatology at University Hospital Zurich, said in an interview.  

University Hospital Zurich

“So, if you go to EULAR continuously, you can actually follow the whole story of how novelty comes into clinical practice,” she added. 

In a separate interview, Dr. Dejaco, a consultant rheumatologist and associate professor at the Medical University of Graz in Austria, said: “There are several new drug trials that are going to be presented.” 

One of his highlights on the use of new drugs for the treatment of giant cell arteritis will be the phase 3 SELECT-GCA trial of the Janus kinase (JAK) inhibitor upadacitinib (LBA0001).

“It’s a trial that hopefully will lead to the approval of this drug in this indication,” Dr. Dejaco said.

EULAR

Late-Breaking Abstracts

Dr. Ospelt noted: “We had a lot of good late-breaking abstracts this year.” 

Some of these include: 

• Real-world data on the comparative effectiveness of five different classes of drugs used to treat psoriatic arthritis (PsA; LBA0002) 
• The 16-week results of a phase 2b/3 study with the novel interleukin (IL)–17A inhibitor izokibep in people with PsA (LBA0005)
• Data from the COSPIRIT-JIA trial on the efficacy and safety of ixekizumab (Taltz) in juvenile idiopathic arthritis (LBA0009)
• Phase 2 data on the safety and efficacy of the CD38-targeting monoclonal antibody daratumumab in systemic lupus erythematosus (LBA0007)
• Results of the phase 2 DAHLIAS study of the anti–neonatal Fc receptor monoclonal antibody nipocalimab in people with primary Sjögren disease (LBA0010) 
• Safety and immunogenicity data from a phase 1 study of an active anti–IL-6 immunotherapy in people with knee osteoarthritis (LBA0011)

The latter is “really interesting,” Dr. Ospelt said. As of now, there is no approved treatment for osteoarthritis, and there is no immunotherapy, “so this would be the first.” 

But it’s not just the late-breaker abstracts to look out for. Dr. Dejaco highlighted two abstracts that will be presented during the Abstract Plenary: 

• A phase 3 study of a new selective JAK1 inhibitor, SHR0302, in rheumatoid arthritis (OP0037)
• A multi-omics analysis and targeted gene-editing study in people with , which causes inflammatory and hematologic changes (OP0073)

Of the latter, he said, “this disease is still incompletely understood, and this abstract really helps to better understand the mechanisms underlying this disease.”
 

One to Watch: CAR T-Cell Therapy 

Dr. Ospelt said that the scientific program is about 80% clinical and 20% basic science overall. However, more sessions are being held jointly because data are starting to move from the bench to bedside. 

One of the basic science areas that has had “a real buzz” around it and is now producing results in the clinic is the use of chimeric antigen receptor (CAR) T cells. In one of the first, and perhaps aptly titled What Is New, or WIN, sessions of the congress, Georg Schett, MD, vice president of research at Friedrich-Alexander-Universität Erlangen-Nüremberg in Germany, will discuss the use of CAR T-cell therapy for inflammatory RMDs. There are also multiple abstract presentations on this topic. 

In-depth tissue analysis and prediction of treatment response is another interesting approach, Dr. Ospelt said. “I think that’s the way to go, that we come from the blood, we go into the tissue.” A “very nice” example of this approach will be presented during the Abstract Plenary session on Wednesday, June 12, looking at how synovial tissue macrophages may be able to give information on likely treatment response in treatment-naive rheumatoid arthritis (OP0062). There are also some further findings related to the tissue biopsy–driven treatment trial R4RA that are being presented at the meeting (OP0218, OP0242, and POS0351).
 

EULAR Highlighted Sessions

Among the highlighted sessions on the EULAR 2024 website is one on axial involvement in PsA and spondyloarthritis (SpA). 

“Axial involvement in psoriatic arthritis and peripheral involvement in axial spondyloarthritis is quite a hot topic at the moment,” Dr. Ospelt said. There are lots of questions: “How connected are they? How different are they? Do we need different treatment for axial involvement compared to peripheral involvement?” 

Another EULAR highlighted session is the 75th anniversary of glucocorticoid treatment, during which Past President of EULAR and Emeritus Professor of Rheumatology Josef S. Smolen, MD, will overview the “past, present, and future” of glucocorticoids in RMDs. Consultant rheumatologist Frank Buttgereit, MD, from the German Rheumatism Research Center in Berlin, will discuss the practicalities of using these drugs in clinical practice.

Dr. Dejaco noted: “Glucocorticoids have been one of the most important treatments for a very long time, and they’re still the most important treatment for the acute treatment of systemic inflammatory diseases.”

For a long time, there was no alternative to using steroids, he added, but steroid-sparing options now exist, and there will be data presented on a new type of drug that could potentially be used to control cortisol levels in the body (OP0335).
 

Recommendations and More

Dr. Ospelt and Dr. Dejaco both pointed out other sessions that are likely to be very popular, such as the first and second EULAR Recommendations sessions, a session on rheumatoid arthritis prevention, as well as the many presentations and sessions on digital health and nonpharmacologic interventions such as exercise. 

With over 5242 submitted abstracts, there is going to be no shortage of data being presented at EULAR 2024. Alongside the traditional abstract submission categories, this year there is a new clinical case reports category. 

“We had about 578 submissions for that category,” Dr. Dejaco said. There were 3315 abstracts submitted for the clinical research category, 812 for the basic and translational research category, 283 from health professionals in rheumatology, 152 from patient groups, and 102 in the field of pediatric rheumatology.
 

Join in On-Site, Watch on Demand 

EULAR 2024 reverts to an on-site–only meeting this year. Some of the more lighthearted yet educational elements of the program for those attending include the second edition of the EMEUNET Rheumatology Quiz and, new for this year, two escape rooms. These rooms will provide an interactive experience where small teams will have to solve rheumatologic conundrums in order to escape the room within the hour, Dr. Dejaco explained. There will also be a morning run on Friday, June 14. “It’s not a race, it’s simply to meet and run together,” Dr. Dejaco said. 

But if you cannot make the congress in person, the EULAR 2024 Livestream will be broadcasting throughout the congress. Anyone registered by June 30 will have on-demand access to the recorded content from June 17 until December 31, 2024. 

Abstracts for the meeting will be published as a supplement to Annals of the Rheumatic Diseases, the official journal of EULAR. 

Dr. Ospelt reported no relevant financial relationships. Dr. Dejaco has received consulting/speaker fees from AbbVie, Eli Lilly, Janssen, Sparrow, Novartis, Pfizer, Roche, Galapagos, and Sanofi.

A version of this article appeared on Medscape.com.

BOSTON — Use of over-the-counter arthritis supplements containing undisclosed glucocorticoids can lead to iatrogenic adrenal dysfunction, Cushing syndrome, and/or adrenal insufficiency (AI). 

Patients who have been taking these supplements for prolonged periods must slowly taper off them with corticosteroid replacement, because abruptly stopping the supplement can precipitate AI, Kevin S. Wei, MD, said in a presentation of 12 cases — the largest such series to date of the phenomenon — at the annual meeting of the Endocrine Society.

The specific supplements used were Artri King in eight of the patients, Ardosons in two, and Ajo Rey in one. In April 2022, the US Food and Drug Administration issued a warning that Artri King contains diclofenac and dexamethasone not listed on the product label. In July 2023, the agency issued an expanded warning about that product and others including Ajo Rey.

The supplements are not believed to be sold in the United States, but they are available in Mexico and can be ordered online, said Dr. Wei, a second-year resident at the Keck School of Medicine at the University of California, Los Angeles.

“We found that quite a lot of patients after they’ve been on the Artri King or some other over the counter arthritis supplement, started developing these cushingoid features seen in the physical exam, such as rounded facial features or stretch marks of their abdomen,” he said.

And “when patients are abruptly taken off those supplements … sometimes this can cause them to go into signs or symptoms of adrenal insufficiency. That can occasionally be life-threatening if it’s not addressed in an inpatient setting,” Dr. Wei said.

In an interview, session moderator Sharon L. Wardlaw, MD, professor of medicine at Columbia University Irving Medical Center, New York, explained that when a person takes these drugs containing hidden glucocorticoids, “they won’t be picked up in a cortisol assay, but they’ll suppress the [adrenocorticotropic hormone] and the person’s own cortisol production. They look like they have Cushing, but when you measure their hormone levels, they’re undetectable. And then people wonder what’s going on. Well, their [hypothalamic-pituitary-adrenal] axis is suppressed.”

But if the product is suddenly stopped without cortisol replacement “If they get an infection they can die because they can’t mount a cortisol response.”

The takeaway message, she said, is “always ask patients to show you their supplements and look at them. In many cases, that’s why they work so well for pain relief because they have ingredients that people shouldn’t be taking.”

Twelve Patients Seen During 2022-2023

The 12 patients were seen during 2022-2023 at an endocrinology consult service in an urban safety net hospital. Their median age was 52 years, and one third were women. All had started using the supplements for joint pain, with a median of about 6 months of use prior to cessation.

Presenting symptoms included nausea/vomiting in 42%, fatigue in 42%, abdominal pain in 33%, and dizziness in 17%. Physical exam findings included moon facies in 66%, central adiposity in 66%, abdominal striae in 50%, dorsocervical fat pad in 33%, and bruising in 33%. Three required intensive care admission.

Cortisol testing was performed in 11 of the patients and was normal (≥ 16 mcg/dL) in just one. AI (≤ 3 mcg/dL) was found in three, while the rest had indeterminate results. Of those seven patients, subsequent cosyntropin-stimulation testing suggested AI (cortisol < 16 mcg/dL at 60 minutes post stimulation) in four patients, while the other two showed reduced but normal responses (cortisol 18.2-18.4 mcg/dL).

Ten of the 12 patients were prescribed glucocorticoid tapering replacements to avoid precipitating adrenal crisis, most commonly twice-daily hydrocortisone. Of those ten, eight continued to take the replacement steroids 1-2 years later, Dr. Wei said.

Dr. Wei and Dr. Wardlaw had no disclosures.

A version of this article appeared on Medscape.com.

BOSTON — Use of over-the-counter arthritis supplements containing undisclosed glucocorticoids can lead to iatrogenic adrenal dysfunction, Cushing syndrome, and/or adrenal insufficiency (AI). 

Patients who have been taking these supplements for prolonged periods must slowly taper off them with corticosteroid replacement, because abruptly stopping the supplement can precipitate AI, Kevin S. Wei, MD, said in a presentation of 12 cases — the largest such series to date of the phenomenon — at the annual meeting of the Endocrine Society.

The specific supplements used were Artri King in eight of the patients, Ardosons in two, and Ajo Rey in one. In April 2022, the US Food and Drug Administration issued a warning that Artri King contains diclofenac and dexamethasone not listed on the product label. In July 2023, the agency issued an expanded warning about that product and others including Ajo Rey.

The supplements are not believed to be sold in the United States, but they are available in Mexico and can be ordered online, said Dr. Wei, a second-year resident at the Keck School of Medicine at the University of California, Los Angeles.

“We found that quite a lot of patients after they’ve been on the Artri King or some other over the counter arthritis supplement, started developing these cushingoid features seen in the physical exam, such as rounded facial features or stretch marks of their abdomen,” he said.

And “when patients are abruptly taken off those supplements … sometimes this can cause them to go into signs or symptoms of adrenal insufficiency. That can occasionally be life-threatening if it’s not addressed in an inpatient setting,” Dr. Wei said.

In an interview, session moderator Sharon L. Wardlaw, MD, professor of medicine at Columbia University Irving Medical Center, New York, explained that when a person takes these drugs containing hidden glucocorticoids, “they won’t be picked up in a cortisol assay, but they’ll suppress the [adrenocorticotropic hormone] and the person’s own cortisol production. They look like they have Cushing, but when you measure their hormone levels, they’re undetectable. And then people wonder what’s going on. Well, their [hypothalamic-pituitary-adrenal] axis is suppressed.”

But if the product is suddenly stopped without cortisol replacement “If they get an infection they can die because they can’t mount a cortisol response.”

The takeaway message, she said, is “always ask patients to show you their supplements and look at them. In many cases, that’s why they work so well for pain relief because they have ingredients that people shouldn’t be taking.”

Twelve Patients Seen During 2022-2023

The 12 patients were seen during 2022-2023 at an endocrinology consult service in an urban safety net hospital. Their median age was 52 years, and one third were women. All had started using the supplements for joint pain, with a median of about 6 months of use prior to cessation.

Presenting symptoms included nausea/vomiting in 42%, fatigue in 42%, abdominal pain in 33%, and dizziness in 17%. Physical exam findings included moon facies in 66%, central adiposity in 66%, abdominal striae in 50%, dorsocervical fat pad in 33%, and bruising in 33%. Three required intensive care admission.

Cortisol testing was performed in 11 of the patients and was normal (≥ 16 mcg/dL) in just one. AI (≤ 3 mcg/dL) was found in three, while the rest had indeterminate results. Of those seven patients, subsequent cosyntropin-stimulation testing suggested AI (cortisol < 16 mcg/dL at 60 minutes post stimulation) in four patients, while the other two showed reduced but normal responses (cortisol 18.2-18.4 mcg/dL).

Ten of the 12 patients were prescribed glucocorticoid tapering replacements to avoid precipitating adrenal crisis, most commonly twice-daily hydrocortisone. Of those ten, eight continued to take the replacement steroids 1-2 years later, Dr. Wei said.

Dr. Wei and Dr. Wardlaw had no disclosures.

A version of this article appeared on Medscape.com.

BOSTON — Use of over-the-counter arthritis supplements containing undisclosed glucocorticoids can lead to iatrogenic adrenal dysfunction, Cushing syndrome, and/or adrenal insufficiency (AI). 

Patients who have been taking these supplements for prolonged periods must slowly taper off them with corticosteroid replacement, because abruptly stopping the supplement can precipitate AI, Kevin S. Wei, MD, said in a presentation of 12 cases — the largest such series to date of the phenomenon — at the annual meeting of the Endocrine Society.

The specific supplements used were Artri King in eight of the patients, Ardosons in two, and Ajo Rey in one. In April 2022, the US Food and Drug Administration issued a warning that Artri King contains diclofenac and dexamethasone not listed on the product label. In July 2023, the agency issued an expanded warning about that product and others including Ajo Rey.

The supplements are not believed to be sold in the United States, but they are available in Mexico and can be ordered online, said Dr. Wei, a second-year resident at the Keck School of Medicine at the University of California, Los Angeles.

“We found that quite a lot of patients after they’ve been on the Artri King or some other over the counter arthritis supplement, started developing these cushingoid features seen in the physical exam, such as rounded facial features or stretch marks of their abdomen,” he said.

And “when patients are abruptly taken off those supplements … sometimes this can cause them to go into signs or symptoms of adrenal insufficiency. That can occasionally be life-threatening if it’s not addressed in an inpatient setting,” Dr. Wei said.

In an interview, session moderator Sharon L. Wardlaw, MD, professor of medicine at Columbia University Irving Medical Center, New York, explained that when a person takes these drugs containing hidden glucocorticoids, “they won’t be picked up in a cortisol assay, but they’ll suppress the [adrenocorticotropic hormone] and the person’s own cortisol production. They look like they have Cushing, but when you measure their hormone levels, they’re undetectable. And then people wonder what’s going on. Well, their [hypothalamic-pituitary-adrenal] axis is suppressed.”

But if the product is suddenly stopped without cortisol replacement “If they get an infection they can die because they can’t mount a cortisol response.”

The takeaway message, she said, is “always ask patients to show you their supplements and look at them. In many cases, that’s why they work so well for pain relief because they have ingredients that people shouldn’t be taking.”

Twelve Patients Seen During 2022-2023

The 12 patients were seen during 2022-2023 at an endocrinology consult service in an urban safety net hospital. Their median age was 52 years, and one third were women. All had started using the supplements for joint pain, with a median of about 6 months of use prior to cessation.

Presenting symptoms included nausea/vomiting in 42%, fatigue in 42%, abdominal pain in 33%, and dizziness in 17%. Physical exam findings included moon facies in 66%, central adiposity in 66%, abdominal striae in 50%, dorsocervical fat pad in 33%, and bruising in 33%. Three required intensive care admission.

Cortisol testing was performed in 11 of the patients and was normal (≥ 16 mcg/dL) in just one. AI (≤ 3 mcg/dL) was found in three, while the rest had indeterminate results. Of those seven patients, subsequent cosyntropin-stimulation testing suggested AI (cortisol < 16 mcg/dL at 60 minutes post stimulation) in four patients, while the other two showed reduced but normal responses (cortisol 18.2-18.4 mcg/dL).

Ten of the 12 patients were prescribed glucocorticoid tapering replacements to avoid precipitating adrenal crisis, most commonly twice-daily hydrocortisone. Of those ten, eight continued to take the replacement steroids 1-2 years later, Dr. Wei said.

Dr. Wei and Dr. Wardlaw had no disclosures.

A version of this article appeared on Medscape.com.

TOPLINE:

The cumulative effect of frequent corticosteroid injections (CSIs), a common treatment for musculoskeletal pain, does not appear to increase the risk for fractures.

METHODOLOGY:

• Researchers utilized an institutional electronic health record database to identify adults in Olmsted County, Minnesota, receiving corticosteroid injections from May 1, 2018, to July 1, 2022.
• Corticosteroid equivalents were calculated for medications injected, including methylprednisolone, triamcinolone, betamethasone, and dexamethasone.
• Patients were excluded if they had a prescription for oral prednisone equivalents greater than 2.5 mg/day for more than 30 days.
• Fracture events were identified using ICD-9 and ICD-10 codes and were included only if they occurred after the first corticosteroid injection.

TAKEAWAY:

• A total of 7197 patients were analyzed, with a mean age of 64.4 years, and of these patients, 346 (4.8%) had a new fracture in a mean time of 329 days from the first corticosteroid injection, including 149 (43.1%) in classic osteoporotic locations.
• The study reported no increased fracture risk associated with corticosteroid injections and no significant difference in fracture rates across cumulative corticosteroid injection dose quartiles, regardless of osteoporosis status.
• Factors such as previous fractures, age, and Charlson Comorbidity Index were associated with a higher risk for fractures, not corticosteroid injections.

IN PRACTICE:

“Clinicians should be reassured that frequent CSI is not associated with higher fracture risk and should not withhold these important pain treatments owing to concern for fracture,” wrote the authors of the study.

SOURCE:

The study was led by Terin T. Sytsma, MD, Division of Community Internal Medicine, Geriatrics, and Palliative Care, Mayo Clinic, Rochester, Minnesota. It was published online in JAMA Network Open.

LIMITATIONS:

The study’s retrospective cohort design and its focus on a predominantly White population in a single community may limit the generalizability of the findings. Confounding variables such as smoking status, alcohol intake, and physical activity were acknowledged as potential contributors to fracture risk. Only clinically apparent fractures were considered, excluding silent vertebral fractures, and differences in corticosteroid formulation were not delineated.

DISCLOSURES:

The study was supported by a Mayo Clinic Catalyst Award to Dr. Sytsma. The authors had no conflicts of interest to report.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article appeared on Medscape.com.

TOPLINE:

The cumulative effect of frequent corticosteroid injections (CSIs), a common treatment for musculoskeletal pain, does not appear to increase the risk for fractures.

METHODOLOGY:

• Researchers utilized an institutional electronic health record database to identify adults in Olmsted County, Minnesota, receiving corticosteroid injections from May 1, 2018, to July 1, 2022.
• Corticosteroid equivalents were calculated for medications injected, including methylprednisolone, triamcinolone, betamethasone, and dexamethasone.
• Patients were excluded if they had a prescription for oral prednisone equivalents greater than 2.5 mg/day for more than 30 days.
• Fracture events were identified using ICD-9 and ICD-10 codes and were included only if they occurred after the first corticosteroid injection.

TAKEAWAY:

• A total of 7197 patients were analyzed, with a mean age of 64.4 years, and of these patients, 346 (4.8%) had a new fracture in a mean time of 329 days from the first corticosteroid injection, including 149 (43.1%) in classic osteoporotic locations.
• The study reported no increased fracture risk associated with corticosteroid injections and no significant difference in fracture rates across cumulative corticosteroid injection dose quartiles, regardless of osteoporosis status.
• Factors such as previous fractures, age, and Charlson Comorbidity Index were associated with a higher risk for fractures, not corticosteroid injections.

IN PRACTICE:

“Clinicians should be reassured that frequent CSI is not associated with higher fracture risk and should not withhold these important pain treatments owing to concern for fracture,” wrote the authors of the study.

SOURCE:

The study was led by Terin T. Sytsma, MD, Division of Community Internal Medicine, Geriatrics, and Palliative Care, Mayo Clinic, Rochester, Minnesota. It was published online in JAMA Network Open.

LIMITATIONS:

The study’s retrospective cohort design and its focus on a predominantly White population in a single community may limit the generalizability of the findings. Confounding variables such as smoking status, alcohol intake, and physical activity were acknowledged as potential contributors to fracture risk. Only clinically apparent fractures were considered, excluding silent vertebral fractures, and differences in corticosteroid formulation were not delineated.

DISCLOSURES:

The study was supported by a Mayo Clinic Catalyst Award to Dr. Sytsma. The authors had no conflicts of interest to report.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article appeared on Medscape.com.

TOPLINE:

The cumulative effect of frequent corticosteroid injections (CSIs), a common treatment for musculoskeletal pain, does not appear to increase the risk for fractures.

METHODOLOGY:

• Researchers utilized an institutional electronic health record database to identify adults in Olmsted County, Minnesota, receiving corticosteroid injections from May 1, 2018, to July 1, 2022.
• Corticosteroid equivalents were calculated for medications injected, including methylprednisolone, triamcinolone, betamethasone, and dexamethasone.
• Patients were excluded if they had a prescription for oral prednisone equivalents greater than 2.5 mg/day for more than 30 days.
• Fracture events were identified using ICD-9 and ICD-10 codes and were included only if they occurred after the first corticosteroid injection.

TAKEAWAY:

• A total of 7197 patients were analyzed, with a mean age of 64.4 years, and of these patients, 346 (4.8%) had a new fracture in a mean time of 329 days from the first corticosteroid injection, including 149 (43.1%) in classic osteoporotic locations.
• The study reported no increased fracture risk associated with corticosteroid injections and no significant difference in fracture rates across cumulative corticosteroid injection dose quartiles, regardless of osteoporosis status.
• Factors such as previous fractures, age, and Charlson Comorbidity Index were associated with a higher risk for fractures, not corticosteroid injections.

IN PRACTICE:

“Clinicians should be reassured that frequent CSI is not associated with higher fracture risk and should not withhold these important pain treatments owing to concern for fracture,” wrote the authors of the study.

SOURCE:

The study was led by Terin T. Sytsma, MD, Division of Community Internal Medicine, Geriatrics, and Palliative Care, Mayo Clinic, Rochester, Minnesota. It was published online in JAMA Network Open.

LIMITATIONS:

The study’s retrospective cohort design and its focus on a predominantly White population in a single community may limit the generalizability of the findings. Confounding variables such as smoking status, alcohol intake, and physical activity were acknowledged as potential contributors to fracture risk. Only clinically apparent fractures were considered, excluding silent vertebral fractures, and differences in corticosteroid formulation were not delineated.

DISCLOSURES:

The study was supported by a Mayo Clinic Catalyst Award to Dr. Sytsma. The authors had no conflicts of interest to report.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article appeared on Medscape.com.

TOPLINE:

Adding arthroscopic surgery to nonoperative management neither delays nor accelerates the timing of total knee arthroplasty (TKA) in patients with knee osteoarthritis (OA).

METHODOLOGY:

• Some case series show that arthroscopic surgery for knee OA may delay more invasive procedures, such as TKA or osteotomy, while longitudinal cohort studies often contradict this. Current OA guidelines are yet to address this issue.
• This secondary analysis of a randomized trial compared the long-term incidence of TKA in 178 patients (mean age, 59 years; 64.3% women) with knee OA who were referred for potential arthroscopic surgery at a tertiary care center in Canada.
• The patients received nonoperative care with or without additional arthroscopic surgery.
• Patients in the arthroscopic surgery group had specific knee procedures (resection of degenerative knee tissues) along with nonoperative management (physical therapy plus medications as required), while the control group received nonoperative management alone.
• The primary outcome was TKA on the knee being studied, and the secondary outcome was TKA or osteotomy on either knee.

TAKEAWAY:

• During a median follow-up of 13.8 years, 37.6% of patients underwent TKA, with comparable proportions of patients in the arthroscopic surgery and control groups undergoing TKA (adjusted hazard ratio [aHR], 0.85; 95% CI, 0.52-1.40).
• The rates of TKA or osteotomy on either knee were similar in both groups (aHR, 0.91; 95% CI, 0.59-1.41).
• A time-stratified analysis done for 0-5 years, 5-10 years, and beyond 10 years of follow-up also showed a consistent interpretation.
• When patients with crossover to arthroscopic surgery during the follow-up were included, the results remained similar for both the primary (HR, 0.88; 95% CI, 0.53-1.44) and secondary (HR, 1.08; 95% CI, 0.69-1.68) outcomes.

IN PRACTICE:

“Our study findings do not support the use of arthroscopic surgery for OA of the knee.” “Arthroscopic surgery does not provide additional benefit to nonoperative management for improving pain, stiffness, and function and is likely not cost-effective at 2 years of follow-up,” the authors wrote.

SOURCE:

This study was led by Trevor B. Birmingham, PhD, Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, London, Ontario, Canada. It was published online in JAMA Network Open

LIMITATIONS:

The study was designed to assess differences in 2-year patient-reported outcomes rather than long-term TKA incidence. Factors influencing decisions to undergo TKA or osteotomy were not considered. Moreover, the effects observed in this study should be evaluated considering the estimated confidence intervals.

DISCLOSURES:

This study was supported by the ICES, which is funded by an annual grant from the Ontario Ministry of Health and the Ministry of Long-Term Care. Some authors declared consulting, performing contracted services, or receiving grant funding, royalties, and nonfinancial support from various sources.

A version of this article appeared on Medscape.com.

TOPLINE:

Adding arthroscopic surgery to nonoperative management neither delays nor accelerates the timing of total knee arthroplasty (TKA) in patients with knee osteoarthritis (OA).

METHODOLOGY:

• Some case series show that arthroscopic surgery for knee OA may delay more invasive procedures, such as TKA or osteotomy, while longitudinal cohort studies often contradict this. Current OA guidelines are yet to address this issue.
• This secondary analysis of a randomized trial compared the long-term incidence of TKA in 178 patients (mean age, 59 years; 64.3% women) with knee OA who were referred for potential arthroscopic surgery at a tertiary care center in Canada.
• The patients received nonoperative care with or without additional arthroscopic surgery.
• Patients in the arthroscopic surgery group had specific knee procedures (resection of degenerative knee tissues) along with nonoperative management (physical therapy plus medications as required), while the control group received nonoperative management alone.
• The primary outcome was TKA on the knee being studied, and the secondary outcome was TKA or osteotomy on either knee.

TAKEAWAY:

• During a median follow-up of 13.8 years, 37.6% of patients underwent TKA, with comparable proportions of patients in the arthroscopic surgery and control groups undergoing TKA (adjusted hazard ratio [aHR], 0.85; 95% CI, 0.52-1.40).
• The rates of TKA or osteotomy on either knee were similar in both groups (aHR, 0.91; 95% CI, 0.59-1.41).
• A time-stratified analysis done for 0-5 years, 5-10 years, and beyond 10 years of follow-up also showed a consistent interpretation.
• When patients with crossover to arthroscopic surgery during the follow-up were included, the results remained similar for both the primary (HR, 0.88; 95% CI, 0.53-1.44) and secondary (HR, 1.08; 95% CI, 0.69-1.68) outcomes.

IN PRACTICE:

“Our study findings do not support the use of arthroscopic surgery for OA of the knee.” “Arthroscopic surgery does not provide additional benefit to nonoperative management for improving pain, stiffness, and function and is likely not cost-effective at 2 years of follow-up,” the authors wrote.

SOURCE:

This study was led by Trevor B. Birmingham, PhD, Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, London, Ontario, Canada. It was published online in JAMA Network Open

LIMITATIONS:

The study was designed to assess differences in 2-year patient-reported outcomes rather than long-term TKA incidence. Factors influencing decisions to undergo TKA or osteotomy were not considered. Moreover, the effects observed in this study should be evaluated considering the estimated confidence intervals.

DISCLOSURES:

This study was supported by the ICES, which is funded by an annual grant from the Ontario Ministry of Health and the Ministry of Long-Term Care. Some authors declared consulting, performing contracted services, or receiving grant funding, royalties, and nonfinancial support from various sources.

A version of this article appeared on Medscape.com.

TOPLINE:

Adding arthroscopic surgery to nonoperative management neither delays nor accelerates the timing of total knee arthroplasty (TKA) in patients with knee osteoarthritis (OA).

METHODOLOGY:

• Some case series show that arthroscopic surgery for knee OA may delay more invasive procedures, such as TKA or osteotomy, while longitudinal cohort studies often contradict this. Current OA guidelines are yet to address this issue.
• This secondary analysis of a randomized trial compared the long-term incidence of TKA in 178 patients (mean age, 59 years; 64.3% women) with knee OA who were referred for potential arthroscopic surgery at a tertiary care center in Canada.
• The patients received nonoperative care with or without additional arthroscopic surgery.
• Patients in the arthroscopic surgery group had specific knee procedures (resection of degenerative knee tissues) along with nonoperative management (physical therapy plus medications as required), while the control group received nonoperative management alone.
• The primary outcome was TKA on the knee being studied, and the secondary outcome was TKA or osteotomy on either knee.

TAKEAWAY:

• During a median follow-up of 13.8 years, 37.6% of patients underwent TKA, with comparable proportions of patients in the arthroscopic surgery and control groups undergoing TKA (adjusted hazard ratio [aHR], 0.85; 95% CI, 0.52-1.40).
• The rates of TKA or osteotomy on either knee were similar in both groups (aHR, 0.91; 95% CI, 0.59-1.41).
• A time-stratified analysis done for 0-5 years, 5-10 years, and beyond 10 years of follow-up also showed a consistent interpretation.
• When patients with crossover to arthroscopic surgery during the follow-up were included, the results remained similar for both the primary (HR, 0.88; 95% CI, 0.53-1.44) and secondary (HR, 1.08; 95% CI, 0.69-1.68) outcomes.

IN PRACTICE:

“Our study findings do not support the use of arthroscopic surgery for OA of the knee.” “Arthroscopic surgery does not provide additional benefit to nonoperative management for improving pain, stiffness, and function and is likely not cost-effective at 2 years of follow-up,” the authors wrote.

SOURCE:

This study was led by Trevor B. Birmingham, PhD, Fowler Kennedy Sport Medicine Clinic, University of Western Ontario, London, Ontario, Canada. It was published online in JAMA Network Open

LIMITATIONS:

The study was designed to assess differences in 2-year patient-reported outcomes rather than long-term TKA incidence. Factors influencing decisions to undergo TKA or osteotomy were not considered. Moreover, the effects observed in this study should be evaluated considering the estimated confidence intervals.

DISCLOSURES:

This study was supported by the ICES, which is funded by an annual grant from the Ontario Ministry of Health and the Ministry of Long-Term Care. Some authors declared consulting, performing contracted services, or receiving grant funding, royalties, and nonfinancial support from various sources.

A version of this article appeared on Medscape.com.

VIENNA — Nearly one third of anterior cruciate ligament (ACL) injuries appear to heal without surgery, according to an analysis of three-dimensional MRI data taken from the NACOX study, presented as a late-breaking poster at the OARSI 2024 World Congress. 

At 2 years after injury, three-dimensional MRI showed that 13 of 43 (30%) knees had evidence of normal, continuous ACL fibers. Moreover, a further 14 (33%) knees had a continuous ACL fiber structure following rehabilitation alone. ACL fibers were partly (16%) or completely (21%) ruptured in the remainder of cases.

Sara Freeman/Medscape Medical News

“If you think of the ACL like a rope, when there is continuity, it means those fibers have rejoined,” study coauthor Stephanie Filbay, PhD, an associate professor at the University of Melbourne in Australia, told this news organization.

“Within that, there’s a few variations of healing that we’re seeing. Some look like they’ve never been injured, while some have rejoined but appear thinner or longer than a normal ACL,” Dr. Filbay said.

She added: “What all this research is showing is that it’s happening at a much higher rate than we thought possible. And in some of the studies, it looks like ACL healing is associated with very favorable outcomes.”

At OARSI 2024, Dr. Filbay presented additional data from her and others’ research on the relationships between ACL healing and long-term functional outcomes and osteoarthritis (OA) incidence in comparisons between patients’ treatment pathways: Early ACL surgery, rehabilitation followed by delayed surgery, or rehabilitation only.
 

Healing Without Surgery

The idea that the ACL can heal without surgery is relatively recent and perhaps still not widely accepted as a concept, as Dr. Filbay explained during a plenary lecture at the congress.

Dr. Filbay explained that the ideal management of ACL injury depends on the severity of knee injury and whether someone’s knee is stable after trying nonsurgical management. Results of the ACL SNNAP trial, for example, have suggested that surgical reconstruction is superior to a rehabilitation strategy for managing non-acute ACL injuries where there are persistent symptoms of instability.

However, there have been two trials — COMPARE performed in the Netherlands and KANON performed in Sweden — that found that early surgery was no better than a strategy of initial rehabilitation with the option of having a delayed ACL surgery if needed.
 

What Happens Long Term?

Posttraumatic OA is a well-known long-term consequence of ACL injury. According to a recent meta-analysis, there is a sevenfold increased risk for OA comparing people who have and have not had an ACL injury.

ACL injury also results in OA occurring at an earlier age than in people with OA who have not had an ACL injury. This has been shown to progress at a faster rate and be associated with a longer period of disability, Dr. Filbay said at the congress, sponsored by the Osteoarthritis Research Society International.

But does the ACL really heal? Dr. Filbay thinks that it does and has been involved in several studies that have used MRI to look at how the ACL may do so.

In a recently published paper, Dr. Filbay and colleagues reported the findings from a secondary analysis of the KANON trial and found that nearly one in three (30%) of the participants who had been randomized to optional delayed surgery had MRI evidence of healing at 2 years. But when they excluded people who had delayed surgery, 53% of people managed by rehabilitation alone had evidence of healing.

The evaluation also found that those who had a healed vs non-healed ligament had better results using the Knee Injury and Osteoarthritis Outcome Score (KOOS), and that there were better outcomes at 2 years among those with ACL healing vs those who had early or delayed ACL surgery.
 

ACL Continuity and Long-Term Outcomes

At OARSI 2024, Dr. Filbay and colleagues reported an even longer-term secondary analysis of the KANON trial on the relationship between ACL healing at 5 years and outcomes at 11 years. The results were first reported in NEJM Evidence.

Dr. Filbay reported that participants with ACL continuity on MRI at 5 years actually had worse patient-reported outcomes 11 years later than those who were managed with early or delayed ACL reconstruction.

“This does not align with previous findings suggesting better 2-year outcomes compared to the surgically managed groups,” Dr. Filbay said.

However, people with ACL continuity following rehabilitation did seem to show numerically similar or fewer signs of radiographic OA at 11 years vs the surgical groups.

Radiographic OA of the tibiofemoral joint (TFJ) or patellofemoral joint (PFJ) at 11 years was observed in a respective 14% and 21% of people with ACL continuity at 5 years (n = 14) and in 22% and 11% of people with ACL discontinuity at 5 years in the rehabilitation alone group.

By comparison, radiographic OA of the TFJ or PFJ at 11 years was seen in a respective 23% and 35% of people who had rehabilitation with delayed surgery (n = 26) and in 18% and 41% of those who had early surgery (n = 49).

These are descriptive results, Dr. Filbay said, because the numbers were too small to do a statistical analysis. Further, larger, longitudinal studies will be needed.
 

Posttraumatic OA After ACL Surgery

Elsewhere at OARSI 2024, Matthew Harkey, PhD, and colleagues from Michigan State University, East Lansing, Michigan, reported data showing that nearly two thirds of people who undergo surgical reconstruction have symptoms at 6 months that could be indicative of early knee OA.

Knee symptoms indicative of OA declined to 53% at 12 months and 45% at 24 months.

“It’s a bit complex — we can’t outright say arthritis is developing, but there’s a large group of patients whose symptoms linger long after surgery,” Dr. Harkey said in a press release.

“Often, clinicians assume that these postoperative symptoms will naturally improve as patients reengage with their usual activities. However, what we’re seeing suggests these symptoms persist and likely require a targeted approach to manage or improve them,” Dr. Harkey said.

The analysis used data on 3752 individuals aged 14-40 years who were enrolled in the New Zealand ACL Registry and who completed the KOOS at 6, 12, and 24 months after having ACL reconstruction.

Dr. Harkey and team reported that one in three people had persistent early OA symptoms at 2 years, while 23% had no early OA symptoms at any timepoint.

The studies were independently supported. Dr. Filbay and Dr. Harkey had no relevant financial relationships to report.

Dr. Filbay and colleagues have developed a treatment decision aid for individuals who have sustained an ACL injury. This provides information on the different treatment options available and how they compare.

A version of this article appeared on Medscape.com.

VIENNA — Nearly one third of anterior cruciate ligament (ACL) injuries appear to heal without surgery, according to an analysis of three-dimensional MRI data taken from the NACOX study, presented as a late-breaking poster at the OARSI 2024 World Congress. 

At 2 years after injury, three-dimensional MRI showed that 13 of 43 (30%) knees had evidence of normal, continuous ACL fibers. Moreover, a further 14 (33%) knees had a continuous ACL fiber structure following rehabilitation alone. ACL fibers were partly (16%) or completely (21%) ruptured in the remainder of cases.

Sara Freeman/Medscape Medical News

“If you think of the ACL like a rope, when there is continuity, it means those fibers have rejoined,” study coauthor Stephanie Filbay, PhD, an associate professor at the University of Melbourne in Australia, told this news organization.

“Within that, there’s a few variations of healing that we’re seeing. Some look like they’ve never been injured, while some have rejoined but appear thinner or longer than a normal ACL,” Dr. Filbay said.

She added: “What all this research is showing is that it’s happening at a much higher rate than we thought possible. And in some of the studies, it looks like ACL healing is associated with very favorable outcomes.”

At OARSI 2024, Dr. Filbay presented additional data from her and others’ research on the relationships between ACL healing and long-term functional outcomes and osteoarthritis (OA) incidence in comparisons between patients’ treatment pathways: Early ACL surgery, rehabilitation followed by delayed surgery, or rehabilitation only.
 

Healing Without Surgery

The idea that the ACL can heal without surgery is relatively recent and perhaps still not widely accepted as a concept, as Dr. Filbay explained during a plenary lecture at the congress.

Dr. Filbay explained that the ideal management of ACL injury depends on the severity of knee injury and whether someone’s knee is stable after trying nonsurgical management. Results of the ACL SNNAP trial, for example, have suggested that surgical reconstruction is superior to a rehabilitation strategy for managing non-acute ACL injuries where there are persistent symptoms of instability.

However, there have been two trials — COMPARE performed in the Netherlands and KANON performed in Sweden — that found that early surgery was no better than a strategy of initial rehabilitation with the option of having a delayed ACL surgery if needed.
 

What Happens Long Term?

Posttraumatic OA is a well-known long-term consequence of ACL injury. According to a recent meta-analysis, there is a sevenfold increased risk for OA comparing people who have and have not had an ACL injury.

ACL injury also results in OA occurring at an earlier age than in people with OA who have not had an ACL injury. This has been shown to progress at a faster rate and be associated with a longer period of disability, Dr. Filbay said at the congress, sponsored by the Osteoarthritis Research Society International.

But does the ACL really heal? Dr. Filbay thinks that it does and has been involved in several studies that have used MRI to look at how the ACL may do so.

In a recently published paper, Dr. Filbay and colleagues reported the findings from a secondary analysis of the KANON trial and found that nearly one in three (30%) of the participants who had been randomized to optional delayed surgery had MRI evidence of healing at 2 years. But when they excluded people who had delayed surgery, 53% of people managed by rehabilitation alone had evidence of healing.

The evaluation also found that those who had a healed vs non-healed ligament had better results using the Knee Injury and Osteoarthritis Outcome Score (KOOS), and that there were better outcomes at 2 years among those with ACL healing vs those who had early or delayed ACL surgery.
 

ACL Continuity and Long-Term Outcomes

At OARSI 2024, Dr. Filbay and colleagues reported an even longer-term secondary analysis of the KANON trial on the relationship between ACL healing at 5 years and outcomes at 11 years. The results were first reported in NEJM Evidence.

Dr. Filbay reported that participants with ACL continuity on MRI at 5 years actually had worse patient-reported outcomes 11 years later than those who were managed with early or delayed ACL reconstruction.

“This does not align with previous findings suggesting better 2-year outcomes compared to the surgically managed groups,” Dr. Filbay said.

However, people with ACL continuity following rehabilitation did seem to show numerically similar or fewer signs of radiographic OA at 11 years vs the surgical groups.

Radiographic OA of the tibiofemoral joint (TFJ) or patellofemoral joint (PFJ) at 11 years was observed in a respective 14% and 21% of people with ACL continuity at 5 years (n = 14) and in 22% and 11% of people with ACL discontinuity at 5 years in the rehabilitation alone group.

By comparison, radiographic OA of the TFJ or PFJ at 11 years was seen in a respective 23% and 35% of people who had rehabilitation with delayed surgery (n = 26) and in 18% and 41% of those who had early surgery (n = 49).

These are descriptive results, Dr. Filbay said, because the numbers were too small to do a statistical analysis. Further, larger, longitudinal studies will be needed.
 

Posttraumatic OA After ACL Surgery

Elsewhere at OARSI 2024, Matthew Harkey, PhD, and colleagues from Michigan State University, East Lansing, Michigan, reported data showing that nearly two thirds of people who undergo surgical reconstruction have symptoms at 6 months that could be indicative of early knee OA.

Knee symptoms indicative of OA declined to 53% at 12 months and 45% at 24 months.

“It’s a bit complex — we can’t outright say arthritis is developing, but there’s a large group of patients whose symptoms linger long after surgery,” Dr. Harkey said in a press release.

“Often, clinicians assume that these postoperative symptoms will naturally improve as patients reengage with their usual activities. However, what we’re seeing suggests these symptoms persist and likely require a targeted approach to manage or improve them,” Dr. Harkey said.

The analysis used data on 3752 individuals aged 14-40 years who were enrolled in the New Zealand ACL Registry and who completed the KOOS at 6, 12, and 24 months after having ACL reconstruction.

Dr. Harkey and team reported that one in three people had persistent early OA symptoms at 2 years, while 23% had no early OA symptoms at any timepoint.

The studies were independently supported. Dr. Filbay and Dr. Harkey had no relevant financial relationships to report.

Dr. Filbay and colleagues have developed a treatment decision aid for individuals who have sustained an ACL injury. This provides information on the different treatment options available and how they compare.

A version of this article appeared on Medscape.com.

VIENNA — Nearly one third of anterior cruciate ligament (ACL) injuries appear to heal without surgery, according to an analysis of three-dimensional MRI data taken from the NACOX study, presented as a late-breaking poster at the OARSI 2024 World Congress. 

At 2 years after injury, three-dimensional MRI showed that 13 of 43 (30%) knees had evidence of normal, continuous ACL fibers. Moreover, a further 14 (33%) knees had a continuous ACL fiber structure following rehabilitation alone. ACL fibers were partly (16%) or completely (21%) ruptured in the remainder of cases.

Sara Freeman/Medscape Medical News

“If you think of the ACL like a rope, when there is continuity, it means those fibers have rejoined,” study coauthor Stephanie Filbay, PhD, an associate professor at the University of Melbourne in Australia, told this news organization.

“Within that, there’s a few variations of healing that we’re seeing. Some look like they’ve never been injured, while some have rejoined but appear thinner or longer than a normal ACL,” Dr. Filbay said.

She added: “What all this research is showing is that it’s happening at a much higher rate than we thought possible. And in some of the studies, it looks like ACL healing is associated with very favorable outcomes.”

At OARSI 2024, Dr. Filbay presented additional data from her and others’ research on the relationships between ACL healing and long-term functional outcomes and osteoarthritis (OA) incidence in comparisons between patients’ treatment pathways: Early ACL surgery, rehabilitation followed by delayed surgery, or rehabilitation only.
 

Healing Without Surgery

The idea that the ACL can heal without surgery is relatively recent and perhaps still not widely accepted as a concept, as Dr. Filbay explained during a plenary lecture at the congress.

Dr. Filbay explained that the ideal management of ACL injury depends on the severity of knee injury and whether someone’s knee is stable after trying nonsurgical management. Results of the ACL SNNAP trial, for example, have suggested that surgical reconstruction is superior to a rehabilitation strategy for managing non-acute ACL injuries where there are persistent symptoms of instability.

However, there have been two trials — COMPARE performed in the Netherlands and KANON performed in Sweden — that found that early surgery was no better than a strategy of initial rehabilitation with the option of having a delayed ACL surgery if needed.
 

What Happens Long Term?

Posttraumatic OA is a well-known long-term consequence of ACL injury. According to a recent meta-analysis, there is a sevenfold increased risk for OA comparing people who have and have not had an ACL injury.

ACL injury also results in OA occurring at an earlier age than in people with OA who have not had an ACL injury. This has been shown to progress at a faster rate and be associated with a longer period of disability, Dr. Filbay said at the congress, sponsored by the Osteoarthritis Research Society International.

But does the ACL really heal? Dr. Filbay thinks that it does and has been involved in several studies that have used MRI to look at how the ACL may do so.

In a recently published paper, Dr. Filbay and colleagues reported the findings from a secondary analysis of the KANON trial and found that nearly one in three (30%) of the participants who had been randomized to optional delayed surgery had MRI evidence of healing at 2 years. But when they excluded people who had delayed surgery, 53% of people managed by rehabilitation alone had evidence of healing.

The evaluation also found that those who had a healed vs non-healed ligament had better results using the Knee Injury and Osteoarthritis Outcome Score (KOOS), and that there were better outcomes at 2 years among those with ACL healing vs those who had early or delayed ACL surgery.
 

ACL Continuity and Long-Term Outcomes

At OARSI 2024, Dr. Filbay and colleagues reported an even longer-term secondary analysis of the KANON trial on the relationship between ACL healing at 5 years and outcomes at 11 years. The results were first reported in NEJM Evidence.

Dr. Filbay reported that participants with ACL continuity on MRI at 5 years actually had worse patient-reported outcomes 11 years later than those who were managed with early or delayed ACL reconstruction.

“This does not align with previous findings suggesting better 2-year outcomes compared to the surgically managed groups,” Dr. Filbay said.

However, people with ACL continuity following rehabilitation did seem to show numerically similar or fewer signs of radiographic OA at 11 years vs the surgical groups.

Radiographic OA of the tibiofemoral joint (TFJ) or patellofemoral joint (PFJ) at 11 years was observed in a respective 14% and 21% of people with ACL continuity at 5 years (n = 14) and in 22% and 11% of people with ACL discontinuity at 5 years in the rehabilitation alone group.

By comparison, radiographic OA of the TFJ or PFJ at 11 years was seen in a respective 23% and 35% of people who had rehabilitation with delayed surgery (n = 26) and in 18% and 41% of those who had early surgery (n = 49).

These are descriptive results, Dr. Filbay said, because the numbers were too small to do a statistical analysis. Further, larger, longitudinal studies will be needed.
 

Posttraumatic OA After ACL Surgery

Elsewhere at OARSI 2024, Matthew Harkey, PhD, and colleagues from Michigan State University, East Lansing, Michigan, reported data showing that nearly two thirds of people who undergo surgical reconstruction have symptoms at 6 months that could be indicative of early knee OA.

Knee symptoms indicative of OA declined to 53% at 12 months and 45% at 24 months.

“It’s a bit complex — we can’t outright say arthritis is developing, but there’s a large group of patients whose symptoms linger long after surgery,” Dr. Harkey said in a press release.

“Often, clinicians assume that these postoperative symptoms will naturally improve as patients reengage with their usual activities. However, what we’re seeing suggests these symptoms persist and likely require a targeted approach to manage or improve them,” Dr. Harkey said.

The analysis used data on 3752 individuals aged 14-40 years who were enrolled in the New Zealand ACL Registry and who completed the KOOS at 6, 12, and 24 months after having ACL reconstruction.

Dr. Harkey and team reported that one in three people had persistent early OA symptoms at 2 years, while 23% had no early OA symptoms at any timepoint.

The studies were independently supported. Dr. Filbay and Dr. Harkey had no relevant financial relationships to report.

Dr. Filbay and colleagues have developed a treatment decision aid for individuals who have sustained an ACL injury. This provides information on the different treatment options available and how they compare.

A version of this article appeared on Medscape.com.

VIENNA — With the glucagon-like peptide (GLP) 1 receptor agonist semaglutide (Wegovy) recently shown to significantly induce weight loss in people with osteoarthritis (OA) and obesity in the STEP-9 trial, could drugs traditionally used to treat type 2 diabetes be the next big thing for OA management?

“Hormone-based weight loss drugs are a game changer” for obesity management, Sébastien Czernichow, MD, PhD, said during a plenary session at the OARSI 2024 World Congress.

Sara Freeman/Medscape Medical News

Drugs such as semaglutide may also have a cardioprotective effect, reducing the risk for major adverse cardiovascular events by as much as 20% vs placebo, added Dr. Czernichow, professor of nutrition at Paris Cité University and head of the Department of Nutrition at the George Pompidou European Hospital in Paris, France.

“You have to keep in mind that the short-term side effects are mainly gastrointestinal and [are] manageable. The mid-term side effects are an increased gallbladder [disease] risk, and the long-term benefits and risks are not really well known yet,” Dr. Czernichow said. With regard to that, the effects of these drugs on lean body mass, bone health, and nutritional deficiencies need to be further evaluated and monitored.
 

Weight Loss Benefits

Weight loss is one of the cornerstones of OA management, and in addition to the weight loss seen with the GLP-1 receptor agonists, there have also been changes in body composition, Dr. Czernichow said.

In SURMOUNT-1, for example, the dual glucose-dependent insulinotropic polypeptide and GLP-1 receptor agonist tirzepatide (Zepbound) was shown to significantly reduce total fat mass with a smaller decrease in total lean mass in a subanalysis.

It has been argued that effects on body composition need to be considered when evaluating new weight loss drugs, and that focusing only on the degree of weight reduction is “encouraging inaccurate measures of medication efficacy for both patients and clinicians,” Dr. Czernichow said, citing a viewpoint published in JAMA Internal Medicine.

“The real question is: Are we able to fund these drugs for everyone? Or will only the richest patients be allocated to these drugs?” Dr. Czernichow said.
 

Weight Rebound

Tonia Vincent, MBBS, PhD, professor of musculoskeletal biology and an honorary rheumatologist at The Kennedy Institute of Rheumatology at University of Oxford in England, was concerned about rebound weight gain.

“We hear a lot about this, that people stopping drugs actually get worse weight gain than before they started, and that’s a concern about a drug that is going to have a huge pressure for supply,” Dr. Vincent said following Dr. Czernichow’s presentation.

Another delegate said that calling GLP-1 receptor agonists a “game changer” for weight loss in OA was premature because long-term results are needed.

“You mentioned that the double-digit weight loss is getting very close to the results from bariatric surgery, but bariatric surgery you do once, and for these drugs, to maintain the weight loss, you need to take them continuously,” she said.
 

Weight Loss Affects Bone

Yet another delegate cautioned on the potential effects of significant weight loss on bone and cartilage. There is evidence, he said, that weight loss of 5-10 kg can significantly affect bone turnover, increasing bone resorption and thus putting patients at a risk of becoming osteopenic. “Are we looking at a new population of osteoporosis patients who may then also be at risk for fractures?” he asked.

Separately at OARSI 2024, Anne C. Bay-Jensen, PhD, chief technology officer at Nordic Bioscience in Herlev, Denmark, and colleagues reported data showing that weight loss was associated with an increase in bone and cartilage degradation.

Although Dr. Bay-Jensen and colleagues found that losing weight was associated with improved patient outcomes, there was a 1.58-fold increase in the bone resorption marker CTX-I in people who had lost weight vs a 1.37-fold gain in those whose weight remained stable and 1.11-fold increase in those who gained weight.

Moreover, there was a 1.15-fold increase in the cartilage degradation marker C2M in the weight loss group and 0.84-fold decrease in the interstitial matrix degradation marker C3M.
 

GLP-1 and Bone Effects

Another question is whether GLP-1 receptor agonists might be having direct effects on the bone that may be beneficial in OA. They might, postdoctoral researcher Eda Çiftci, PhD, of AO Research Institute Davos in Switzerland, and collaborators, said during the poster sessions at OARSI 2024.

Dr. Çiftci and researchers reported the findings of an in vitro study that looked at whether liraglutide might have anti-inflammatory and anabolic effects on a human chondrocytes model that had been treated with interleukin (IL)-1-beta to “mimic an inflammatory OA condition.”

The release of the proinflammatory cytokines IL-6 and IL-8 was reduced by treatment with liraglutide when compared with control chondrocytes. Furthermore, the expression of the proteoglycan aggrecan — important for articular cartilage function — also was preserved.

These results suggest that liraglutide does indeed have anabolic and anti-inflammatory effects, Dr. Çiftci and fellow researchers concluded.
 

New Role for Dipeptidyl Transferase Inhibitors?

Researchers are also looking at the potential role for other diabetes medications in OA management, including the dipeptidyl peptidase (DPP) 4 inhibitors.

Although these drugs are considered “weight neutral,” in vitro studies have suggested that the DPP4 enzyme may have a role to play in chondrocyte survival and inflammation, Yu-Hsiu Chen, MD, of the Tri-Service General Hospital and the National Defense Medical Center in Taipei, Taiwan, told this news organization. The DPP4 enzyme inactivates GLP-1, so there is rationale there.

“Last year, we published a paper where we found the concentration of DPP4 in the synovial fluid was correlated with radiographic change in knee OA,” Dr. Chen said. This time, “we’re trying to see if a DPP4 inhibitor can be used as a treatment.”

For their analysis, they used data on people newly diagnosed with type 2 diabetes who were and were not using DPP4 inhibitors obtained from Taiwan’s National Health Insurance Research Database. This database contains information on 99% of the Taiwanese population, Dr. Chen said.

Matching 165,333 DPP4 inhibitor users with an equal number of nonusers showed that there was a significant 58% risk reduction for developing OA with DPP4 inhibitor use (hazard ratio, 0.42; 95% CI, 0.41-0.44).

DPP4 inhibitor use was also associated with a 58% risk lower risk for total knee replacement (TKR) and a 62% lower risk for total hip replacement.

Dr. Chen and colleagues concluded: “These results strongly indicate that DPP4 inhibitors could be considered as a viable treatment approach for individuals with type 2 [diabetes mellitus] who are at risk for developing OA or [who] already have OA.”
 

Could Sodium-Glucose Cotransporter 2 (SGLT2) Inhibitors Be Beneficial?

So, what about SGLT2 inhibitors? Do they also have a potential role to play in managing people with OA, regardless of whether there is diabetes present? Perhaps, and their effect may be even greater than what’s been observed for GLP-1 receptor agonists, as data presented by epidemiologist S. Reza Jafarzadeh, DVM, PhD, suggested.

“While GLP-1 receptor agonist drugs have been reported to reduce OA risk, largely attributed to their weight loss effect, SGLT2 inhibitors may provide a greater protective effect on OA outcomes,” said Dr. Jafarzadeh, assistant professor at Boston University.

Sara Freeman/Medscape Medical News

The congress was sponsored by the Osteoarthritis Research Society International.

Dr. Czernichow disclosed ties with BariaTek Medical, Boehringer Ingelheim, Bristol Myers Squibb, Fresenius, Janssen, Jellynov, Lilly, Novo Nordisk, Novartis, and ViiV Healthcare. Dr. Vincent had no relevant disclosures. Dr. Bay-Jensen is the chief technology officer and director of immunoscience at Nordic Bioscience, which funded the work in the poster she presented at OARSI 2024. The work presented by Dr. Çiftci and colleagues was funded by the Eurostars-2 joint program with co-funding from the European Horizon 2020 research and innovation program. Dr. Çiftci had no personal disclosures to report. Dr. Chen’s work was supported by the government of Taiwan, and she had no financial conflicts of interest to disclose. Dr. Jafarzadeh had no conflicts of interest to disclose.

A version of this article appeared on Medscape.com .

VIENNA — With the glucagon-like peptide (GLP) 1 receptor agonist semaglutide (Wegovy) recently shown to significantly induce weight loss in people with osteoarthritis (OA) and obesity in the STEP-9 trial, could drugs traditionally used to treat type 2 diabetes be the next big thing for OA management?

“Hormone-based weight loss drugs are a game changer” for obesity management, Sébastien Czernichow, MD, PhD, said during a plenary session at the OARSI 2024 World Congress.

Sara Freeman/Medscape Medical News

Drugs such as semaglutide may also have a cardioprotective effect, reducing the risk for major adverse cardiovascular events by as much as 20% vs placebo, added Dr. Czernichow, professor of nutrition at Paris Cité University and head of the Department of Nutrition at the George Pompidou European Hospital in Paris, France.

“You have to keep in mind that the short-term side effects are mainly gastrointestinal and [are] manageable. The mid-term side effects are an increased gallbladder [disease] risk, and the long-term benefits and risks are not really well known yet,” Dr. Czernichow said. With regard to that, the effects of these drugs on lean body mass, bone health, and nutritional deficiencies need to be further evaluated and monitored.
 

Weight Loss Benefits

Weight loss is one of the cornerstones of OA management, and in addition to the weight loss seen with the GLP-1 receptor agonists, there have also been changes in body composition, Dr. Czernichow said.

In SURMOUNT-1, for example, the dual glucose-dependent insulinotropic polypeptide and GLP-1 receptor agonist tirzepatide (Zepbound) was shown to significantly reduce total fat mass with a smaller decrease in total lean mass in a subanalysis.

It has been argued that effects on body composition need to be considered when evaluating new weight loss drugs, and that focusing only on the degree of weight reduction is “encouraging inaccurate measures of medication efficacy for both patients and clinicians,” Dr. Czernichow said, citing a viewpoint published in JAMA Internal Medicine.

“The real question is: Are we able to fund these drugs for everyone? Or will only the richest patients be allocated to these drugs?” Dr. Czernichow said.
 

Weight Rebound

Tonia Vincent, MBBS, PhD, professor of musculoskeletal biology and an honorary rheumatologist at The Kennedy Institute of Rheumatology at University of Oxford in England, was concerned about rebound weight gain.

“We hear a lot about this, that people stopping drugs actually get worse weight gain than before they started, and that’s a concern about a drug that is going to have a huge pressure for supply,” Dr. Vincent said following Dr. Czernichow’s presentation.

Another delegate said that calling GLP-1 receptor agonists a “game changer” for weight loss in OA was premature because long-term results are needed.

“You mentioned that the double-digit weight loss is getting very close to the results from bariatric surgery, but bariatric surgery you do once, and for these drugs, to maintain the weight loss, you need to take them continuously,” she said.
 

Weight Loss Affects Bone

Yet another delegate cautioned on the potential effects of significant weight loss on bone and cartilage. There is evidence, he said, that weight loss of 5-10 kg can significantly affect bone turnover, increasing bone resorption and thus putting patients at a risk of becoming osteopenic. “Are we looking at a new population of osteoporosis patients who may then also be at risk for fractures?” he asked.

Separately at OARSI 2024, Anne C. Bay-Jensen, PhD, chief technology officer at Nordic Bioscience in Herlev, Denmark, and colleagues reported data showing that weight loss was associated with an increase in bone and cartilage degradation.

Although Dr. Bay-Jensen and colleagues found that losing weight was associated with improved patient outcomes, there was a 1.58-fold increase in the bone resorption marker CTX-I in people who had lost weight vs a 1.37-fold gain in those whose weight remained stable and 1.11-fold increase in those who gained weight.

Moreover, there was a 1.15-fold increase in the cartilage degradation marker C2M in the weight loss group and 0.84-fold decrease in the interstitial matrix degradation marker C3M.
 

GLP-1 and Bone Effects

Another question is whether GLP-1 receptor agonists might be having direct effects on the bone that may be beneficial in OA. They might, postdoctoral researcher Eda Çiftci, PhD, of AO Research Institute Davos in Switzerland, and collaborators, said during the poster sessions at OARSI 2024.

Dr. Çiftci and researchers reported the findings of an in vitro study that looked at whether liraglutide might have anti-inflammatory and anabolic effects on a human chondrocytes model that had been treated with interleukin (IL)-1-beta to “mimic an inflammatory OA condition.”

The release of the proinflammatory cytokines IL-6 and IL-8 was reduced by treatment with liraglutide when compared with control chondrocytes. Furthermore, the expression of the proteoglycan aggrecan — important for articular cartilage function — also was preserved.

These results suggest that liraglutide does indeed have anabolic and anti-inflammatory effects, Dr. Çiftci and fellow researchers concluded.
 

New Role for Dipeptidyl Transferase Inhibitors?

Researchers are also looking at the potential role for other diabetes medications in OA management, including the dipeptidyl peptidase (DPP) 4 inhibitors.

Although these drugs are considered “weight neutral,” in vitro studies have suggested that the DPP4 enzyme may have a role to play in chondrocyte survival and inflammation, Yu-Hsiu Chen, MD, of the Tri-Service General Hospital and the National Defense Medical Center in Taipei, Taiwan, told this news organization. The DPP4 enzyme inactivates GLP-1, so there is rationale there.

“Last year, we published a paper where we found the concentration of DPP4 in the synovial fluid was correlated with radiographic change in knee OA,” Dr. Chen said. This time, “we’re trying to see if a DPP4 inhibitor can be used as a treatment.”

For their analysis, they used data on people newly diagnosed with type 2 diabetes who were and were not using DPP4 inhibitors obtained from Taiwan’s National Health Insurance Research Database. This database contains information on 99% of the Taiwanese population, Dr. Chen said.

Matching 165,333 DPP4 inhibitor users with an equal number of nonusers showed that there was a significant 58% risk reduction for developing OA with DPP4 inhibitor use (hazard ratio, 0.42; 95% CI, 0.41-0.44).

DPP4 inhibitor use was also associated with a 58% risk lower risk for total knee replacement (TKR) and a 62% lower risk for total hip replacement.

Dr. Chen and colleagues concluded: “These results strongly indicate that DPP4 inhibitors could be considered as a viable treatment approach for individuals with type 2 [diabetes mellitus] who are at risk for developing OA or [who] already have OA.”
 

Could Sodium-Glucose Cotransporter 2 (SGLT2) Inhibitors Be Beneficial?

So, what about SGLT2 inhibitors? Do they also have a potential role to play in managing people with OA, regardless of whether there is diabetes present? Perhaps, and their effect may be even greater than what’s been observed for GLP-1 receptor agonists, as data presented by epidemiologist S. Reza Jafarzadeh, DVM, PhD, suggested.

“While GLP-1 receptor agonist drugs have been reported to reduce OA risk, largely attributed to their weight loss effect, SGLT2 inhibitors may provide a greater protective effect on OA outcomes,” said Dr. Jafarzadeh, assistant professor at Boston University.

Sara Freeman/Medscape Medical News

The congress was sponsored by the Osteoarthritis Research Society International.

Dr. Czernichow disclosed ties with BariaTek Medical, Boehringer Ingelheim, Bristol Myers Squibb, Fresenius, Janssen, Jellynov, Lilly, Novo Nordisk, Novartis, and ViiV Healthcare. Dr. Vincent had no relevant disclosures. Dr. Bay-Jensen is the chief technology officer and director of immunoscience at Nordic Bioscience, which funded the work in the poster she presented at OARSI 2024. The work presented by Dr. Çiftci and colleagues was funded by the Eurostars-2 joint program with co-funding from the European Horizon 2020 research and innovation program. Dr. Çiftci had no personal disclosures to report. Dr. Chen’s work was supported by the government of Taiwan, and she had no financial conflicts of interest to disclose. Dr. Jafarzadeh had no conflicts of interest to disclose.

A version of this article appeared on Medscape.com .

VIENNA — With the glucagon-like peptide (GLP) 1 receptor agonist semaglutide (Wegovy) recently shown to significantly induce weight loss in people with osteoarthritis (OA) and obesity in the STEP-9 trial, could drugs traditionally used to treat type 2 diabetes be the next big thing for OA management?

“Hormone-based weight loss drugs are a game changer” for obesity management, Sébastien Czernichow, MD, PhD, said during a plenary session at the OARSI 2024 World Congress.

Sara Freeman/Medscape Medical News

Drugs such as semaglutide may also have a cardioprotective effect, reducing the risk for major adverse cardiovascular events by as much as 20% vs placebo, added Dr. Czernichow, professor of nutrition at Paris Cité University and head of the Department of Nutrition at the George Pompidou European Hospital in Paris, France.

“You have to keep in mind that the short-term side effects are mainly gastrointestinal and [are] manageable. The mid-term side effects are an increased gallbladder [disease] risk, and the long-term benefits and risks are not really well known yet,” Dr. Czernichow said. With regard to that, the effects of these drugs on lean body mass, bone health, and nutritional deficiencies need to be further evaluated and monitored.
 

Weight Loss Benefits

Weight loss is one of the cornerstones of OA management, and in addition to the weight loss seen with the GLP-1 receptor agonists, there have also been changes in body composition, Dr. Czernichow said.

In SURMOUNT-1, for example, the dual glucose-dependent insulinotropic polypeptide and GLP-1 receptor agonist tirzepatide (Zepbound) was shown to significantly reduce total fat mass with a smaller decrease in total lean mass in a subanalysis.

It has been argued that effects on body composition need to be considered when evaluating new weight loss drugs, and that focusing only on the degree of weight reduction is “encouraging inaccurate measures of medication efficacy for both patients and clinicians,” Dr. Czernichow said, citing a viewpoint published in JAMA Internal Medicine.

“The real question is: Are we able to fund these drugs for everyone? Or will only the richest patients be allocated to these drugs?” Dr. Czernichow said.
 

Weight Rebound

Tonia Vincent, MBBS, PhD, professor of musculoskeletal biology and an honorary rheumatologist at The Kennedy Institute of Rheumatology at University of Oxford in England, was concerned about rebound weight gain.

“We hear a lot about this, that people stopping drugs actually get worse weight gain than before they started, and that’s a concern about a drug that is going to have a huge pressure for supply,” Dr. Vincent said following Dr. Czernichow’s presentation.

Another delegate said that calling GLP-1 receptor agonists a “game changer” for weight loss in OA was premature because long-term results are needed.

“You mentioned that the double-digit weight loss is getting very close to the results from bariatric surgery, but bariatric surgery you do once, and for these drugs, to maintain the weight loss, you need to take them continuously,” she said.
 

Weight Loss Affects Bone

Yet another delegate cautioned on the potential effects of significant weight loss on bone and cartilage. There is evidence, he said, that weight loss of 5-10 kg can significantly affect bone turnover, increasing bone resorption and thus putting patients at a risk of becoming osteopenic. “Are we looking at a new population of osteoporosis patients who may then also be at risk for fractures?” he asked.

Separately at OARSI 2024, Anne C. Bay-Jensen, PhD, chief technology officer at Nordic Bioscience in Herlev, Denmark, and colleagues reported data showing that weight loss was associated with an increase in bone and cartilage degradation.

Although Dr. Bay-Jensen and colleagues found that losing weight was associated with improved patient outcomes, there was a 1.58-fold increase in the bone resorption marker CTX-I in people who had lost weight vs a 1.37-fold gain in those whose weight remained stable and 1.11-fold increase in those who gained weight.

Moreover, there was a 1.15-fold increase in the cartilage degradation marker C2M in the weight loss group and 0.84-fold decrease in the interstitial matrix degradation marker C3M.
 

GLP-1 and Bone Effects

Another question is whether GLP-1 receptor agonists might be having direct effects on the bone that may be beneficial in OA. They might, postdoctoral researcher Eda Çiftci, PhD, of AO Research Institute Davos in Switzerland, and collaborators, said during the poster sessions at OARSI 2024.

Dr. Çiftci and researchers reported the findings of an in vitro study that looked at whether liraglutide might have anti-inflammatory and anabolic effects on a human chondrocytes model that had been treated with interleukin (IL)-1-beta to “mimic an inflammatory OA condition.”

The release of the proinflammatory cytokines IL-6 and IL-8 was reduced by treatment with liraglutide when compared with control chondrocytes. Furthermore, the expression of the proteoglycan aggrecan — important for articular cartilage function — also was preserved.

These results suggest that liraglutide does indeed have anabolic and anti-inflammatory effects, Dr. Çiftci and fellow researchers concluded.
 

New Role for Dipeptidyl Transferase Inhibitors?

Researchers are also looking at the potential role for other diabetes medications in OA management, including the dipeptidyl peptidase (DPP) 4 inhibitors.

Although these drugs are considered “weight neutral,” in vitro studies have suggested that the DPP4 enzyme may have a role to play in chondrocyte survival and inflammation, Yu-Hsiu Chen, MD, of the Tri-Service General Hospital and the National Defense Medical Center in Taipei, Taiwan, told this news organization. The DPP4 enzyme inactivates GLP-1, so there is rationale there.

“Last year, we published a paper where we found the concentration of DPP4 in the synovial fluid was correlated with radiographic change in knee OA,” Dr. Chen said. This time, “we’re trying to see if a DPP4 inhibitor can be used as a treatment.”

For their analysis, they used data on people newly diagnosed with type 2 diabetes who were and were not using DPP4 inhibitors obtained from Taiwan’s National Health Insurance Research Database. This database contains information on 99% of the Taiwanese population, Dr. Chen said.

Matching 165,333 DPP4 inhibitor users with an equal number of nonusers showed that there was a significant 58% risk reduction for developing OA with DPP4 inhibitor use (hazard ratio, 0.42; 95% CI, 0.41-0.44).

DPP4 inhibitor use was also associated with a 58% risk lower risk for total knee replacement (TKR) and a 62% lower risk for total hip replacement.

Dr. Chen and colleagues concluded: “These results strongly indicate that DPP4 inhibitors could be considered as a viable treatment approach for individuals with type 2 [diabetes mellitus] who are at risk for developing OA or [who] already have OA.”
 

Could Sodium-Glucose Cotransporter 2 (SGLT2) Inhibitors Be Beneficial?

So, what about SGLT2 inhibitors? Do they also have a potential role to play in managing people with OA, regardless of whether there is diabetes present? Perhaps, and their effect may be even greater than what’s been observed for GLP-1 receptor agonists, as data presented by epidemiologist S. Reza Jafarzadeh, DVM, PhD, suggested.

“While GLP-1 receptor agonist drugs have been reported to reduce OA risk, largely attributed to their weight loss effect, SGLT2 inhibitors may provide a greater protective effect on OA outcomes,” said Dr. Jafarzadeh, assistant professor at Boston University.

Sara Freeman/Medscape Medical News

The congress was sponsored by the Osteoarthritis Research Society International.

Dr. Czernichow disclosed ties with BariaTek Medical, Boehringer Ingelheim, Bristol Myers Squibb, Fresenius, Janssen, Jellynov, Lilly, Novo Nordisk, Novartis, and ViiV Healthcare. Dr. Vincent had no relevant disclosures. Dr. Bay-Jensen is the chief technology officer and director of immunoscience at Nordic Bioscience, which funded the work in the poster she presented at OARSI 2024. The work presented by Dr. Çiftci and colleagues was funded by the Eurostars-2 joint program with co-funding from the European Horizon 2020 research and innovation program. Dr. Çiftci had no personal disclosures to report. Dr. Chen’s work was supported by the government of Taiwan, and she had no financial conflicts of interest to disclose. Dr. Jafarzadeh had no conflicts of interest to disclose.

A version of this article appeared on Medscape.com .

VIENNA — Data do not back the use of diacerein or resveratrol for managing the pain of knee osteoarthritis (OA), according to the results of two well-performed, multicenter, double-blind, randomized controlled clinical trials.

During the News in Therapies session at the OARSI 2024 World Congress, the null findings of the DICKENS study and ARTHROL trial were presented alongside a reappraisal of the possible role of botulinum toxin.
 

DICKENS Study of Diacerein

“The role of diacerein in the treatment of OA is controversial,” acknowledged Dawn Aitken, PhD, associate professor at the University of Tasmania in Hobart, Tasmania, Australia. “There are only a few acceptable quality trials to date, and the results are inconsistent,” Dr. Aitken added.

Indeed, a Cochrane review performed in 2014 had concluded that there was “low-quality evidence that diacerein had a small beneficial effect on pain,” she said. The reported overall effect size on a 100-mm visual analog scale, based on a meta-analysis of 10 trials, has been just −8.65 mm, equating to just a 9% pain reduction.

Bruce Jancin/MDedge News

ARTHROL Trial of Resveratrol

Similarly, negative results were reported for resveratrol from the ARTHROL trial, with 55% of the resveratrol- and 55% of placebo-treated individuals achieving a 20% reduction in knee pain intensity at 3 months. The actual change in knee pain from baseline to 3 months was −15.7 for resveratrol and −15.2 for placebo on a numerical rating scale that went from 0 (no pain) up to 100 (worst pain).

Resveratrol is found naturally in grapes, peanuts, pine cones, and Chinese knotweed, and there is a growing body of evidence that it may have pleiotropic effects, said investigator Christelle Nguyen, PhD, MD, a professor of physical and rehabilitation medicine at Université Paris Cité, Paris, France.

It’s available in a powder form over the counter as a treatment for multiple ailments, but more recently, became available as an oral formulation. Dr. Nguyen and colleagues wanted to know if this would make a difference to OA knee pain when added to usual care.

A double-blind, multicenter, placebo-controlled randomized trial was therefore conducted that involved 142 people with knee OA who had been experiencing knee pain for at least 1 month. The participants were equally randomly allocated to receive either oral resveratrol given as two caplets of 20 mg twice daily for the first week, then once daily for a total of 6 months, or a matched placebo.

There was also no effect of resveratrol vs placebo on a host of secondary outcomes measured at 3 and 6 months.

The interpretation is that oral resveratrol may not be effective in this indication or have a biologic effect on the pain pathway, Dr. Nguyen said.

Sara Freeman/Medscape Medical News

Botulinum Toxin: Over But Not Out?

Dr. Nguyen separately reported data from a new systematic review and meta-analysis on the use of intra-articular (IA) botulinum toxin type A (BoNT-A) for knee OA pain.

Seven of the 14 randomized controlled trials included in the meta-analysis had looked specifically at knee OA outcomes in the short, intermediate, and long term.

Results showed a nonsignificant trend favoring BoNT-A use, with the standard mean difference in pain of 0.35 (−0.82; 0.12), −0.27 (−0.61; 0.08), and −0.43 (−1.12; 0.26) for short-, intermediate-, and long-term use, respectively.

In contrast, pain reductions were seen with BoNT-A in three trials that included people with OA of the shoulder or base of the thumb. This begs the question as to whether botulinum toxin may still have a role to play, Dr. Nguyen said in an interview.

“It seems like there may be a positive effect for the shoulder joint and base of the thumb,” she told this news organization.

“So, basically, we found differences between large and small to intermediate joints,” Dr. Nguyen added. “It questions the dilution of botulinum toxin into the joint. If it’s a big joint, maybe the dilution is too high,” she suggested.

This hypothesis will be tested in the upcoming RHIBOT II trial that will begin recruitment later this year. This is a follow-on from the RHIBOT trial that was published in The Lancet Rheumatology 2 years ago.

Meanwhile, the use of botulinum toxin is off-label, Dr. Nguyen said. “We use it in our clinics only when first-line treatment had failed for base of thumb OA.” It’s not offered as a stand-alone intervention, and the IA injections need to be given by someone with experience, she said.
 

Methodologically Sound Studies

Commenting on the studies, Nancy E. Lane, MD, said: “There have been small botulinum studies before but not powered enough so that you could confirm or refute hypotheses.”

Dr. Lane, endowed professor of medicine, rheumatology, and aging research and director for the Center for Musculoskeletal Health at the University of California Davis School of Medicine, Sacramento, California, added: “Similarly for resveratrol, there have been lots of studies.”

Moreover, Dr. Lane observed that the studies were “really well-designed. They were well-powered. The subjects were selected in such a way that was good rigor in the methodologic design, and there were enough people in the studies so that you could really believe the results.”

The take-home is probably that these approaches do not work, Dr. Lane said, “at least when you apply them to moderate-severe knee OA patients, they don’t seem to make a difference.”

The congress was sponsored by the Osteoarthritis Research Society International.

The DICKENS study of diacerein was an investigator-initiated trial that was funded by the National Health and Medical Research Council of Australia. TRB Chemedica International S.A. provided diacerein free of charge for the trial but was not involved in the implementation or data analysis. Dr. Aitken had no conflicts of interest to disclose.

The ARTHROL trial of oral resveratrol was funded by the French Ministry of Health and Solidarity (Ministré des Solidarités et de la Santé). Yvery Laboratory provided the resveratrol caplet and matching placebo free of charge. Dr. Nguyen has financial relationships with Actelion, Grünenthal, Ipsen, Lilly, Meda, Merz, Novartis, Preciphar, Sandoz, Takeda, Thuasne, and UCB.

Dr. Lane had no relevant conflicts of interest to declare.

A version of this article appeared on Medscape.com.

VIENNA — Data do not back the use of diacerein or resveratrol for managing the pain of knee osteoarthritis (OA), according to the results of two well-performed, multicenter, double-blind, randomized controlled clinical trials.

During the News in Therapies session at the OARSI 2024 World Congress, the null findings of the DICKENS study and ARTHROL trial were presented alongside a reappraisal of the possible role of botulinum toxin.
 

DICKENS Study of Diacerein

“The role of diacerein in the treatment of OA is controversial,” acknowledged Dawn Aitken, PhD, associate professor at the University of Tasmania in Hobart, Tasmania, Australia. “There are only a few acceptable quality trials to date, and the results are inconsistent,” Dr. Aitken added.

Indeed, a Cochrane review performed in 2014 had concluded that there was “low-quality evidence that diacerein had a small beneficial effect on pain,” she said. The reported overall effect size on a 100-mm visual analog scale, based on a meta-analysis of 10 trials, has been just −8.65 mm, equating to just a 9% pain reduction.

Bruce Jancin/MDedge News

ARTHROL Trial of Resveratrol

Similarly, negative results were reported for resveratrol from the ARTHROL trial, with 55% of the resveratrol- and 55% of placebo-treated individuals achieving a 20% reduction in knee pain intensity at 3 months. The actual change in knee pain from baseline to 3 months was −15.7 for resveratrol and −15.2 for placebo on a numerical rating scale that went from 0 (no pain) up to 100 (worst pain).

Resveratrol is found naturally in grapes, peanuts, pine cones, and Chinese knotweed, and there is a growing body of evidence that it may have pleiotropic effects, said investigator Christelle Nguyen, PhD, MD, a professor of physical and rehabilitation medicine at Université Paris Cité, Paris, France.

It’s available in a powder form over the counter as a treatment for multiple ailments, but more recently, became available as an oral formulation. Dr. Nguyen and colleagues wanted to know if this would make a difference to OA knee pain when added to usual care.

A double-blind, multicenter, placebo-controlled randomized trial was therefore conducted that involved 142 people with knee OA who had been experiencing knee pain for at least 1 month. The participants were equally randomly allocated to receive either oral resveratrol given as two caplets of 20 mg twice daily for the first week, then once daily for a total of 6 months, or a matched placebo.

There was also no effect of resveratrol vs placebo on a host of secondary outcomes measured at 3 and 6 months.

The interpretation is that oral resveratrol may not be effective in this indication or have a biologic effect on the pain pathway, Dr. Nguyen said.

Sara Freeman/Medscape Medical News

Botulinum Toxin: Over But Not Out?

Dr. Nguyen separately reported data from a new systematic review and meta-analysis on the use of intra-articular (IA) botulinum toxin type A (BoNT-A) for knee OA pain.

Seven of the 14 randomized controlled trials included in the meta-analysis had looked specifically at knee OA outcomes in the short, intermediate, and long term.

Results showed a nonsignificant trend favoring BoNT-A use, with the standard mean difference in pain of 0.35 (−0.82; 0.12), −0.27 (−0.61; 0.08), and −0.43 (−1.12; 0.26) for short-, intermediate-, and long-term use, respectively.

In contrast, pain reductions were seen with BoNT-A in three trials that included people with OA of the shoulder or base of the thumb. This begs the question as to whether botulinum toxin may still have a role to play, Dr. Nguyen said in an interview.

“It seems like there may be a positive effect for the shoulder joint and base of the thumb,” she told this news organization.

“So, basically, we found differences between large and small to intermediate joints,” Dr. Nguyen added. “It questions the dilution of botulinum toxin into the joint. If it’s a big joint, maybe the dilution is too high,” she suggested.

This hypothesis will be tested in the upcoming RHIBOT II trial that will begin recruitment later this year. This is a follow-on from the RHIBOT trial that was published in The Lancet Rheumatology 2 years ago.

Meanwhile, the use of botulinum toxin is off-label, Dr. Nguyen said. “We use it in our clinics only when first-line treatment had failed for base of thumb OA.” It’s not offered as a stand-alone intervention, and the IA injections need to be given by someone with experience, she said.
 

Methodologically Sound Studies

Commenting on the studies, Nancy E. Lane, MD, said: “There have been small botulinum studies before but not powered enough so that you could confirm or refute hypotheses.”

Dr. Lane, endowed professor of medicine, rheumatology, and aging research and director for the Center for Musculoskeletal Health at the University of California Davis School of Medicine, Sacramento, California, added: “Similarly for resveratrol, there have been lots of studies.”

Moreover, Dr. Lane observed that the studies were “really well-designed. They were well-powered. The subjects were selected in such a way that was good rigor in the methodologic design, and there were enough people in the studies so that you could really believe the results.”

The take-home is probably that these approaches do not work, Dr. Lane said, “at least when you apply them to moderate-severe knee OA patients, they don’t seem to make a difference.”

The congress was sponsored by the Osteoarthritis Research Society International.

The DICKENS study of diacerein was an investigator-initiated trial that was funded by the National Health and Medical Research Council of Australia. TRB Chemedica International S.A. provided diacerein free of charge for the trial but was not involved in the implementation or data analysis. Dr. Aitken had no conflicts of interest to disclose.

The ARTHROL trial of oral resveratrol was funded by the French Ministry of Health and Solidarity (Ministré des Solidarités et de la Santé). Yvery Laboratory provided the resveratrol caplet and matching placebo free of charge. Dr. Nguyen has financial relationships with Actelion, Grünenthal, Ipsen, Lilly, Meda, Merz, Novartis, Preciphar, Sandoz, Takeda, Thuasne, and UCB.

Dr. Lane had no relevant conflicts of interest to declare.

A version of this article appeared on Medscape.com.

VIENNA — Data do not back the use of diacerein or resveratrol for managing the pain of knee osteoarthritis (OA), according to the results of two well-performed, multicenter, double-blind, randomized controlled clinical trials.

During the News in Therapies session at the OARSI 2024 World Congress, the null findings of the DICKENS study and ARTHROL trial were presented alongside a reappraisal of the possible role of botulinum toxin.
 

DICKENS Study of Diacerein

“The role of diacerein in the treatment of OA is controversial,” acknowledged Dawn Aitken, PhD, associate professor at the University of Tasmania in Hobart, Tasmania, Australia. “There are only a few acceptable quality trials to date, and the results are inconsistent,” Dr. Aitken added.

Indeed, a Cochrane review performed in 2014 had concluded that there was “low-quality evidence that diacerein had a small beneficial effect on pain,” she said. The reported overall effect size on a 100-mm visual analog scale, based on a meta-analysis of 10 trials, has been just −8.65 mm, equating to just a 9% pain reduction.

Bruce Jancin/MDedge News

ARTHROL Trial of Resveratrol

Similarly, negative results were reported for resveratrol from the ARTHROL trial, with 55% of the resveratrol- and 55% of placebo-treated individuals achieving a 20% reduction in knee pain intensity at 3 months. The actual change in knee pain from baseline to 3 months was −15.7 for resveratrol and −15.2 for placebo on a numerical rating scale that went from 0 (no pain) up to 100 (worst pain).

Resveratrol is found naturally in grapes, peanuts, pine cones, and Chinese knotweed, and there is a growing body of evidence that it may have pleiotropic effects, said investigator Christelle Nguyen, PhD, MD, a professor of physical and rehabilitation medicine at Université Paris Cité, Paris, France.

It’s available in a powder form over the counter as a treatment for multiple ailments, but more recently, became available as an oral formulation. Dr. Nguyen and colleagues wanted to know if this would make a difference to OA knee pain when added to usual care.

A double-blind, multicenter, placebo-controlled randomized trial was therefore conducted that involved 142 people with knee OA who had been experiencing knee pain for at least 1 month. The participants were equally randomly allocated to receive either oral resveratrol given as two caplets of 20 mg twice daily for the first week, then once daily for a total of 6 months, or a matched placebo.

There was also no effect of resveratrol vs placebo on a host of secondary outcomes measured at 3 and 6 months.

The interpretation is that oral resveratrol may not be effective in this indication or have a biologic effect on the pain pathway, Dr. Nguyen said.

Sara Freeman/Medscape Medical News

Botulinum Toxin: Over But Not Out?

Dr. Nguyen separately reported data from a new systematic review and meta-analysis on the use of intra-articular (IA) botulinum toxin type A (BoNT-A) for knee OA pain.

Seven of the 14 randomized controlled trials included in the meta-analysis had looked specifically at knee OA outcomes in the short, intermediate, and long term.

Results showed a nonsignificant trend favoring BoNT-A use, with the standard mean difference in pain of 0.35 (−0.82; 0.12), −0.27 (−0.61; 0.08), and −0.43 (−1.12; 0.26) for short-, intermediate-, and long-term use, respectively.

In contrast, pain reductions were seen with BoNT-A in three trials that included people with OA of the shoulder or base of the thumb. This begs the question as to whether botulinum toxin may still have a role to play, Dr. Nguyen said in an interview.

“It seems like there may be a positive effect for the shoulder joint and base of the thumb,” she told this news organization.

“So, basically, we found differences between large and small to intermediate joints,” Dr. Nguyen added. “It questions the dilution of botulinum toxin into the joint. If it’s a big joint, maybe the dilution is too high,” she suggested.

This hypothesis will be tested in the upcoming RHIBOT II trial that will begin recruitment later this year. This is a follow-on from the RHIBOT trial that was published in The Lancet Rheumatology 2 years ago.

Meanwhile, the use of botulinum toxin is off-label, Dr. Nguyen said. “We use it in our clinics only when first-line treatment had failed for base of thumb OA.” It’s not offered as a stand-alone intervention, and the IA injections need to be given by someone with experience, she said.
 

Methodologically Sound Studies

Commenting on the studies, Nancy E. Lane, MD, said: “There have been small botulinum studies before but not powered enough so that you could confirm or refute hypotheses.”

Dr. Lane, endowed professor of medicine, rheumatology, and aging research and director for the Center for Musculoskeletal Health at the University of California Davis School of Medicine, Sacramento, California, added: “Similarly for resveratrol, there have been lots of studies.”

Moreover, Dr. Lane observed that the studies were “really well-designed. They were well-powered. The subjects were selected in such a way that was good rigor in the methodologic design, and there were enough people in the studies so that you could really believe the results.”

The take-home is probably that these approaches do not work, Dr. Lane said, “at least when you apply them to moderate-severe knee OA patients, they don’t seem to make a difference.”

The congress was sponsored by the Osteoarthritis Research Society International.

The DICKENS study of diacerein was an investigator-initiated trial that was funded by the National Health and Medical Research Council of Australia. TRB Chemedica International S.A. provided diacerein free of charge for the trial but was not involved in the implementation or data analysis. Dr. Aitken had no conflicts of interest to disclose.

The ARTHROL trial of oral resveratrol was funded by the French Ministry of Health and Solidarity (Ministré des Solidarités et de la Santé). Yvery Laboratory provided the resveratrol caplet and matching placebo free of charge. Dr. Nguyen has financial relationships with Actelion, Grünenthal, Ipsen, Lilly, Meda, Merz, Novartis, Preciphar, Sandoz, Takeda, Thuasne, and UCB.

Dr. Lane had no relevant conflicts of interest to declare.

A version of this article appeared on Medscape.com.

VIENNA — Encouraging primary or secondary analyses of trial data for the use of several novel injectables and gene therapy for knee osteoarthritis (OA) were reported at the OARSI 2024 World Congress.

Of all the approaches discussed during the News in Therapies session at OARSI 2024, the most intriguing was the use of the placental extract PTP-001 (MOTYS, Bioventus), session chair Nancy E. Lane, MD, of the University of California Davis School of Medicine, Sacramento, California, told this news organization.

Other notable presentations of data from trials of investigational agents for knee OA included an update from the SPRINGBOARD phase 2B trial of EP-104IAR, a novel long-acting formulation of the corticosteroid fluticasone propionate; a phase 2 trial of pentosan polysulfate sodium (PPS), a non-opioid, semi-synthetic xylose-based polysaccharide; and an update on phase 2 study results for XT-150, a non-viral, plasmid-based gene therapy designed to express a proprietary variant of interleukin 10 (IL-10).
 

PTP-001 (MOTYS)

Indeed, promising results were seen in a phase 2 trial testing a single intra-articular (IA) injection of PTP-001 vs an IA saline placebo in just over 200 individuals with symptomatic knee OA. Results of this dose-finding study were presented by Alessandra Pavesio, senior vice president and the chief science officer of Bioventus/Doron Therapeutics, Durham, North Carolina.

Ms. Pavesio reported there were decreases in knee pain and improvements in knee function, as measured using the Western Ontario and McMaster Universities Arthritis Index (WOMAC). These changes were seen after 26 weeks of treatment with PTP-001 given at either a low (100 mg, n = 74) or high (200 mg, n = 40) dose.

Sara Freeman/Medscape Medical News

Novel Fluticasone Delivery

In the same session, James A. Helliwell, MD, cofounder, director, and chief executive officer of Eupraxia Pharmaceuticals in Victoria, British Columbia, Canada, presented updated data from the SPRINGBOARD phase 2B trial of EP-104IAR, a novel long-acting formulation of the corticosteroid fluticasone propionate.

Dr. Helliwell, a cardiothoracic anesthesiologist, explained that EP-104IAR uses proprietary technology to form fluticasone into a crystal that can then be injected directly into the joint. This then slowly diffuses out to provide a highly localized treatment.

The SPRINGBOARD trial recruited just over 300 individuals with moderate knee OA and moderate to severe WOMAC pain and randomly allocated 164 to a single IA injection of EP-104IAR and 164 to a matching vehicle injection as a placebo. The latter was a slightly viscous substance that behaved like hyaluronic acid, Dr. Helliwell said.

The LSM change in total WOMAC score from baseline to week 12 showed a greater improvement with EP-104IAR than with placebo in a per protocol analysis (−2.79 vs −2.07; P = .002). Similar results were seen for the WOMAC subscales of pain (−2.97 vs −2.24; P = .003), function (−2.64 vs −1.99; P = .005), and stiffness (−2.85 vs −2.05; P = .001).

These differences persisted, Dr. Helliwell reported, out to a 20-week assessment for total WOMAC score, function, and stiffness and out to a 15-week assessment for WOMAC pain.

It’s probably no surprise that a steroid works, Dr. Helliwell said, noting that the safety profile of EP-104IAR may be better than that of regular IA steroid injection because it has “few off-target” effects. He reported that there were “minimal, clinically insignificant, and transient effects” of EP-104IAR on serum cortisol. There was no effect on glucose metabolism, even in patients with diabetes, he said.

“There is a group of our patients that we give long-acting steroids to in the joint, so it looked like [the EP-104IAR] safety profile was really good,” Dr. Lane told this news organization. However, she added: “I’m worried about the price tag associated with it.”
 

PPS

Although it perhaps can’t be described as a novel injectable per se, Mukesh Ahuja, MBBS, global clinical head of osteoarthritis at Paradigm Biopharmaceuticals, presented results of the novel use of PPS.

“PPS is a non-opioid, semi-synthetic xylose-based polysaccharide that is derived from beechwood trees,” Dr. Ahuja said. “It has a long-track record for treating pain, inflammation, and thrombosis in humans.”

Sara Freeman/Medscape Medical News

Gene Therapy

Elsewhere at OARSI 2024, updated data were reported on XT-150, a non-viral, plasmid-based gene therapy designed to express a proprietary variant (v) of IL-10.

Howard Rutman, MD, MBA, chief medical officer of Xalud Therapeutics, reported data from a patient subgroup analysis of a phase 2 trial, which evaluated the effects of single and repeat IA injections of XT-150.

Previously, it was found that a single dose of XT-150 (0.15 mg/mL or 0.45 mg/mL) given as a 1-mL IA injection did not meet its primary endpoint of a greater proportion of patients achieving a 30% or more improvement in WOMAC pain at 180 days vs a matching placebo.

Sara Freeman/Medscape Medical News

The Best Is Yet to Come?

“There’s a lot of things cooking that haven’t been presented here [at OARSI],” Dr. Lane observed.

“We are figuring out how to regenerate cartilage, and it’s a little different than throwing some stem cells in there. There’s some ground-breaking stuff [coming], it just takes us a while.”

Dr. Lane also noted that researchers were “really figuring out” how joints become painful, which will be a major step in figuring out how to make them less painful for patients.

“We’re making a lot of progress in ways that I don’t think we previously thought of, for example, the weight loss drugs. They probably have a central pain reduction effect, I think there’s a little overlap with the opioid receptors, so that’s pretty exciting. So, we’re getting there,” Dr. Lane said.

The congress was sponsored by the Osteoarthritis Research Society International.

Dr. Lane had no relevant conflicts to declare. The trial of PTP-001 (MOTYS) was funded by Bioventus. Ms. Pavesio is an employee of Doron Therapeutics, a subsidiary of Bioventus. The SPRINGBOARD trial with EP-104IAR was funded by Eupraxia Pharmaceuticals. Dr. Helliwell is an employee and stockholder of Eupraxia Pharmaceuticals. The trial of PPS was funded by Paradigm Biopharmaceuticals. Dr. Ahuja is an employee and stockholder of Paradigm Biopharmaceuticals and holds stock in ChitogenX. The trial of XT-150 was funded by Xalud Therapeutics. Dr. Rutman is an employee and equity holder of the company.
 

A version of this article appeared on Medscape.com.

VIENNA — Encouraging primary or secondary analyses of trial data for the use of several novel injectables and gene therapy for knee osteoarthritis (OA) were reported at the OARSI 2024 World Congress.

Of all the approaches discussed during the News in Therapies session at OARSI 2024, the most intriguing was the use of the placental extract PTP-001 (MOTYS, Bioventus), session chair Nancy E. Lane, MD, of the University of California Davis School of Medicine, Sacramento, California, told this news organization.

Other notable presentations of data from trials of investigational agents for knee OA included an update from the SPRINGBOARD phase 2B trial of EP-104IAR, a novel long-acting formulation of the corticosteroid fluticasone propionate; a phase 2 trial of pentosan polysulfate sodium (PPS), a non-opioid, semi-synthetic xylose-based polysaccharide; and an update on phase 2 study results for XT-150, a non-viral, plasmid-based gene therapy designed to express a proprietary variant of interleukin 10 (IL-10).
 

PTP-001 (MOTYS)

Indeed, promising results were seen in a phase 2 trial testing a single intra-articular (IA) injection of PTP-001 vs an IA saline placebo in just over 200 individuals with symptomatic knee OA. Results of this dose-finding study were presented by Alessandra Pavesio, senior vice president and the chief science officer of Bioventus/Doron Therapeutics, Durham, North Carolina.

Ms. Pavesio reported there were decreases in knee pain and improvements in knee function, as measured using the Western Ontario and McMaster Universities Arthritis Index (WOMAC). These changes were seen after 26 weeks of treatment with PTP-001 given at either a low (100 mg, n = 74) or high (200 mg, n = 40) dose.

Sara Freeman/Medscape Medical News

Novel Fluticasone Delivery

In the same session, James A. Helliwell, MD, cofounder, director, and chief executive officer of Eupraxia Pharmaceuticals in Victoria, British Columbia, Canada, presented updated data from the SPRINGBOARD phase 2B trial of EP-104IAR, a novel long-acting formulation of the corticosteroid fluticasone propionate.

Dr. Helliwell, a cardiothoracic anesthesiologist, explained that EP-104IAR uses proprietary technology to form fluticasone into a crystal that can then be injected directly into the joint. This then slowly diffuses out to provide a highly localized treatment.

The SPRINGBOARD trial recruited just over 300 individuals with moderate knee OA and moderate to severe WOMAC pain and randomly allocated 164 to a single IA injection of EP-104IAR and 164 to a matching vehicle injection as a placebo. The latter was a slightly viscous substance that behaved like hyaluronic acid, Dr. Helliwell said.

The LSM change in total WOMAC score from baseline to week 12 showed a greater improvement with EP-104IAR than with placebo in a per protocol analysis (−2.79 vs −2.07; P = .002). Similar results were seen for the WOMAC subscales of pain (−2.97 vs −2.24; P = .003), function (−2.64 vs −1.99; P = .005), and stiffness (−2.85 vs −2.05; P = .001).

These differences persisted, Dr. Helliwell reported, out to a 20-week assessment for total WOMAC score, function, and stiffness and out to a 15-week assessment for WOMAC pain.

It’s probably no surprise that a steroid works, Dr. Helliwell said, noting that the safety profile of EP-104IAR may be better than that of regular IA steroid injection because it has “few off-target” effects. He reported that there were “minimal, clinically insignificant, and transient effects” of EP-104IAR on serum cortisol. There was no effect on glucose metabolism, even in patients with diabetes, he said.

“There is a group of our patients that we give long-acting steroids to in the joint, so it looked like [the EP-104IAR] safety profile was really good,” Dr. Lane told this news organization. However, she added: “I’m worried about the price tag associated with it.”
 

PPS

Although it perhaps can’t be described as a novel injectable per se, Mukesh Ahuja, MBBS, global clinical head of osteoarthritis at Paradigm Biopharmaceuticals, presented results of the novel use of PPS.

“PPS is a non-opioid, semi-synthetic xylose-based polysaccharide that is derived from beechwood trees,” Dr. Ahuja said. “It has a long-track record for treating pain, inflammation, and thrombosis in humans.”

Sara Freeman/Medscape Medical News

Gene Therapy

Elsewhere at OARSI 2024, updated data were reported on XT-150, a non-viral, plasmid-based gene therapy designed to express a proprietary variant (v) of IL-10.

Howard Rutman, MD, MBA, chief medical officer of Xalud Therapeutics, reported data from a patient subgroup analysis of a phase 2 trial, which evaluated the effects of single and repeat IA injections of XT-150.

Previously, it was found that a single dose of XT-150 (0.15 mg/mL or 0.45 mg/mL) given as a 1-mL IA injection did not meet its primary endpoint of a greater proportion of patients achieving a 30% or more improvement in WOMAC pain at 180 days vs a matching placebo.

Sara Freeman/Medscape Medical News

The Best Is Yet to Come?

“There’s a lot of things cooking that haven’t been presented here [at OARSI],” Dr. Lane observed.

“We are figuring out how to regenerate cartilage, and it’s a little different than throwing some stem cells in there. There’s some ground-breaking stuff [coming], it just takes us a while.”

Dr. Lane also noted that researchers were “really figuring out” how joints become painful, which will be a major step in figuring out how to make them less painful for patients.

“We’re making a lot of progress in ways that I don’t think we previously thought of, for example, the weight loss drugs. They probably have a central pain reduction effect, I think there’s a little overlap with the opioid receptors, so that’s pretty exciting. So, we’re getting there,” Dr. Lane said.

The congress was sponsored by the Osteoarthritis Research Society International.

Dr. Lane had no relevant conflicts to declare. The trial of PTP-001 (MOTYS) was funded by Bioventus. Ms. Pavesio is an employee of Doron Therapeutics, a subsidiary of Bioventus. The SPRINGBOARD trial with EP-104IAR was funded by Eupraxia Pharmaceuticals. Dr. Helliwell is an employee and stockholder of Eupraxia Pharmaceuticals. The trial of PPS was funded by Paradigm Biopharmaceuticals. Dr. Ahuja is an employee and stockholder of Paradigm Biopharmaceuticals and holds stock in ChitogenX. The trial of XT-150 was funded by Xalud Therapeutics. Dr. Rutman is an employee and equity holder of the company.
 

A version of this article appeared on Medscape.com.

VIENNA — Encouraging primary or secondary analyses of trial data for the use of several novel injectables and gene therapy for knee osteoarthritis (OA) were reported at the OARSI 2024 World Congress.

Of all the approaches discussed during the News in Therapies session at OARSI 2024, the most intriguing was the use of the placental extract PTP-001 (MOTYS, Bioventus), session chair Nancy E. Lane, MD, of the University of California Davis School of Medicine, Sacramento, California, told this news organization.

Other notable presentations of data from trials of investigational agents for knee OA included an update from the SPRINGBOARD phase 2B trial of EP-104IAR, a novel long-acting formulation of the corticosteroid fluticasone propionate; a phase 2 trial of pentosan polysulfate sodium (PPS), a non-opioid, semi-synthetic xylose-based polysaccharide; and an update on phase 2 study results for XT-150, a non-viral, plasmid-based gene therapy designed to express a proprietary variant of interleukin 10 (IL-10).
 

PTP-001 (MOTYS)

Indeed, promising results were seen in a phase 2 trial testing a single intra-articular (IA) injection of PTP-001 vs an IA saline placebo in just over 200 individuals with symptomatic knee OA. Results of this dose-finding study were presented by Alessandra Pavesio, senior vice president and the chief science officer of Bioventus/Doron Therapeutics, Durham, North Carolina.

Ms. Pavesio reported there were decreases in knee pain and improvements in knee function, as measured using the Western Ontario and McMaster Universities Arthritis Index (WOMAC). These changes were seen after 26 weeks of treatment with PTP-001 given at either a low (100 mg, n = 74) or high (200 mg, n = 40) dose.

Sara Freeman/Medscape Medical News

Novel Fluticasone Delivery

In the same session, James A. Helliwell, MD, cofounder, director, and chief executive officer of Eupraxia Pharmaceuticals in Victoria, British Columbia, Canada, presented updated data from the SPRINGBOARD phase 2B trial of EP-104IAR, a novel long-acting formulation of the corticosteroid fluticasone propionate.

Dr. Helliwell, a cardiothoracic anesthesiologist, explained that EP-104IAR uses proprietary technology to form fluticasone into a crystal that can then be injected directly into the joint. This then slowly diffuses out to provide a highly localized treatment.

The SPRINGBOARD trial recruited just over 300 individuals with moderate knee OA and moderate to severe WOMAC pain and randomly allocated 164 to a single IA injection of EP-104IAR and 164 to a matching vehicle injection as a placebo. The latter was a slightly viscous substance that behaved like hyaluronic acid, Dr. Helliwell said.

The LSM change in total WOMAC score from baseline to week 12 showed a greater improvement with EP-104IAR than with placebo in a per protocol analysis (−2.79 vs −2.07; P = .002). Similar results were seen for the WOMAC subscales of pain (−2.97 vs −2.24; P = .003), function (−2.64 vs −1.99; P = .005), and stiffness (−2.85 vs −2.05; P = .001).

These differences persisted, Dr. Helliwell reported, out to a 20-week assessment for total WOMAC score, function, and stiffness and out to a 15-week assessment for WOMAC pain.

It’s probably no surprise that a steroid works, Dr. Helliwell said, noting that the safety profile of EP-104IAR may be better than that of regular IA steroid injection because it has “few off-target” effects. He reported that there were “minimal, clinically insignificant, and transient effects” of EP-104IAR on serum cortisol. There was no effect on glucose metabolism, even in patients with diabetes, he said.

“There is a group of our patients that we give long-acting steroids to in the joint, so it looked like [the EP-104IAR] safety profile was really good,” Dr. Lane told this news organization. However, she added: “I’m worried about the price tag associated with it.”
 

PPS

Although it perhaps can’t be described as a novel injectable per se, Mukesh Ahuja, MBBS, global clinical head of osteoarthritis at Paradigm Biopharmaceuticals, presented results of the novel use of PPS.

“PPS is a non-opioid, semi-synthetic xylose-based polysaccharide that is derived from beechwood trees,” Dr. Ahuja said. “It has a long-track record for treating pain, inflammation, and thrombosis in humans.”

Sara Freeman/Medscape Medical News

Gene Therapy

Elsewhere at OARSI 2024, updated data were reported on XT-150, a non-viral, plasmid-based gene therapy designed to express a proprietary variant (v) of IL-10.

Howard Rutman, MD, MBA, chief medical officer of Xalud Therapeutics, reported data from a patient subgroup analysis of a phase 2 trial, which evaluated the effects of single and repeat IA injections of XT-150.

Previously, it was found that a single dose of XT-150 (0.15 mg/mL or 0.45 mg/mL) given as a 1-mL IA injection did not meet its primary endpoint of a greater proportion of patients achieving a 30% or more improvement in WOMAC pain at 180 days vs a matching placebo.

Sara Freeman/Medscape Medical News

The Best Is Yet to Come?

“There’s a lot of things cooking that haven’t been presented here [at OARSI],” Dr. Lane observed.

“We are figuring out how to regenerate cartilage, and it’s a little different than throwing some stem cells in there. There’s some ground-breaking stuff [coming], it just takes us a while.”

Dr. Lane also noted that researchers were “really figuring out” how joints become painful, which will be a major step in figuring out how to make them less painful for patients.

“We’re making a lot of progress in ways that I don’t think we previously thought of, for example, the weight loss drugs. They probably have a central pain reduction effect, I think there’s a little overlap with the opioid receptors, so that’s pretty exciting. So, we’re getting there,” Dr. Lane said.

The congress was sponsored by the Osteoarthritis Research Society International.

Dr. Lane had no relevant conflicts to declare. The trial of PTP-001 (MOTYS) was funded by Bioventus. Ms. Pavesio is an employee of Doron Therapeutics, a subsidiary of Bioventus. The SPRINGBOARD trial with EP-104IAR was funded by Eupraxia Pharmaceuticals. Dr. Helliwell is an employee and stockholder of Eupraxia Pharmaceuticals. The trial of PPS was funded by Paradigm Biopharmaceuticals. Dr. Ahuja is an employee and stockholder of Paradigm Biopharmaceuticals and holds stock in ChitogenX. The trial of XT-150 was funded by Xalud Therapeutics. Dr. Rutman is an employee and equity holder of the company.
 

A version of this article appeared on Medscape.com.

Weight-bearing recreational activity was associated with a 22% increased odds of developing knee osteoarthritis (OA) in a large prospective cohort study in the Netherlands, but notably, the increased risk was seen only in those with low levels of lower-limb muscle mass.

The findings point toward the value of “tailored advice” for physical activity, and suggest that “caution is needed when engaging in weight-bearing activity, especially for individuals with low levels of lower-limb muscle mass,” Yahong Wu, MD, and coinvestigators, of the Erasmus Medical Center in Rotterdam, the Netherlands, wrote in JAMA Network Open.

kali9/Getty Images

Investigators used data from sequential cohorts of the longitudinal Rotterdam Study, which enrolled people aged 45 and older starting in 1990. The 5003 participants in this new analysis of physical activity and knee OA had complete records of baseline recreational physical activity, baseline knee pain, and knee radiographs from both baseline and at least one follow-up exam. Those with radiographically defined knee OA at baseline were excluded.

The incident rate of radiographically defined (x-ray) knee OA among all participants was 8.4%, with a mean follow-up time of 6.33 years. Among 3492 individuals without baseline knee pain, the researchers found no increased odds of incident radiographic OA with non–weight-bearing activity (odds ratio [OR], 1.04; 95% CI, 0.95-1.15; P = .37) but a significant association of weight-bearing activity with OA incidence (OR, 1.22; 95% CI, 1.10-1.35; P < .001).

A stratification analysis of a subset of participants whose lower-limb mass had been measured by dual-energy x-ray absorptiometry (DXA) showed, however, that the association of weight-bearing activity with incident OA was limited to patients in the lowest third of lower-limb muscle mass index (LMI), who had a 53% increased likelihood of developing knee OA (OR, 1.53; 95% CI, 1.15-2.04; P = .003).

For patients in the middle and upper tertiles, there was no significant association between weight-bearing activity and the odds of incident OA (OR, 0.93; P = .73, and OR, 1.15; P = .40, respectively).

The findings are reassuring overall, said Kelli D. Allen, PhD, research professor of medicine and exercise physiologist at the University of North Carolina at Chapel Hill, who was asked to comment on the study. “The study corroborates prior research showing that for most people, weight-bearing recreational activity does not increase the risk of knee osteoarthritis. This should be encouraging for people who want to increase their physical activity,” she said.

Physical Activity Types, Other Analyses

The researchers assessed total, weight-bearing, and non–weight-bearing physical activity using two validated questionnaires (an adapted version of the Zutphen Physical Activity Questionnaire and the Longitudinal Aging Study Amsterdam physical activity questionnaire) that asked participants about the frequency and duration of various types of physical activity. Activity was quantified as metabolic equivalent of task (MET) hours per week, and weight-bearing activities were defined as those in which the knee joint bears the body’s weight.

Walking, gardening, golf, dancing, and ball sports were among the activities qualifying as weight-bearing activities. Non–weight-bearing activities included cycling, rowing, and swimming.

Sex, body mass index, and follow-up time were among the covariates adjusted for in the primary analysis. Similar results were found when adjustments were also made for educational level, alcohol intake, lipid levels, and diabetes.

While incident radiographic knee OA (measured using the Kellgren & Lawrence grading system) was the primary outcome, the researchers also looked at symptomatic knee OA, as defined by x-ray and a knee pain questionnaire, and found no significant association of its incidence with any of the exercise categories (total, weight-bearing, or non-weight-bearing).

Coauthor Joyce B. J. van Meurs, PhD, of the departments of internal medicine and orthopedics & sports medicine at Erasmus Medical Center, told this news organization that “pain as a subjective, recurrent symptom is more difficult to study … [and] a larger sample size or more precise measurements [of pain] in future studies would help to better understand the true association” of symptomatic knee OA and physical activity.

Similarly, analyses of the 1511 patients (out of 5003) who had knee pain at baseline found no significant association of weight-bearing or non–weight-bearing physical activity with incident radiographic knee OA. The trends were similar to those found in the population without knee pain, however, which suggests the analysis was underpowered, the researchers wrote, noting too that patients with baseline pain had lower activity levels than those without pain. (Low case numbers precluded a stratification analysis on LMI for incident symptomatic OA.)
 

Thigh Circumference as an Indicator of Muscle Mass

The findings build upon an international meta-analysis published in 2021 that found no association between total physical activity and knee OA and align with other studies suggesting a link between greater mechanical stress/strain and greater OA risk, the researchers wrote. (The meta-analysis couldn’t investigate different types of activity.)

“Although we cannot establish a causal relationship … we hypothesize that the mechanical loading on joints and cartilage could explain the association of weight-bearing activity with osteoarthritis in the low LMI tertile group,” they said.

It is possible that thigh muscle-specific strength or mass may temper the risk of knee OA, they wrote, but the lack of thigh strength data in the Rotterdam Study precluded such evaluation. Still, in everyday practice, the researchers noted, lower limb muscle function could be assessed using thigh circumference.

Dr. Allen agreed. “ ‘Gold standard’ assessment of muscle mass is not common in routine practice, but clinicians can evaluate muscle mass in other ways, such as thigh circumference,” she told this news organization, noting that measurement should align with procedures described by the National Health and Nutrition Examination Survey in its anthropometry procedures manual.

“If low lower-limb muscle mass is suspected, a referral to a physical therapist can be helpful for more formally assessing muscle mass and muscle strength,” she added, “and for instructions for a safe and appropriate exercise program for building muscle and protecting joints.”

Among other limitations of the study, according to the researchers, are an ethnically nondiverse population, the unavailability of knee injury data, and the assessment of physical activity only at baseline.

Moving forward, Dr. van Meurs told this news organization, “the main question regarding physical activity and OA is still, if people already have pain or early OA complaints, what kinds of sports they can do without hurting their joints?” This “should be tested,” she said, “in a real-life, ideally trial-like intervention study.”

The study was funded by the Erasmus Medical Center and Erasmus University as well as through various government grants. Dr. Wu also had study support from the China Scholarship Council. Two of the authors reported relationships with arthritis-related organizations. Dr. Allen reported having no disclosures relevant to her comments.

Weight-bearing recreational activity was associated with a 22% increased odds of developing knee osteoarthritis (OA) in a large prospective cohort study in the Netherlands, but notably, the increased risk was seen only in those with low levels of lower-limb muscle mass.

The findings point toward the value of “tailored advice” for physical activity, and suggest that “caution is needed when engaging in weight-bearing activity, especially for individuals with low levels of lower-limb muscle mass,” Yahong Wu, MD, and coinvestigators, of the Erasmus Medical Center in Rotterdam, the Netherlands, wrote in JAMA Network Open.

kali9/Getty Images

Investigators used data from sequential cohorts of the longitudinal Rotterdam Study, which enrolled people aged 45 and older starting in 1990. The 5003 participants in this new analysis of physical activity and knee OA had complete records of baseline recreational physical activity, baseline knee pain, and knee radiographs from both baseline and at least one follow-up exam. Those with radiographically defined knee OA at baseline were excluded.

The incident rate of radiographically defined (x-ray) knee OA among all participants was 8.4%, with a mean follow-up time of 6.33 years. Among 3492 individuals without baseline knee pain, the researchers found no increased odds of incident radiographic OA with non–weight-bearing activity (odds ratio [OR], 1.04; 95% CI, 0.95-1.15; P = .37) but a significant association of weight-bearing activity with OA incidence (OR, 1.22; 95% CI, 1.10-1.35; P < .001).

A stratification analysis of a subset of participants whose lower-limb mass had been measured by dual-energy x-ray absorptiometry (DXA) showed, however, that the association of weight-bearing activity with incident OA was limited to patients in the lowest third of lower-limb muscle mass index (LMI), who had a 53% increased likelihood of developing knee OA (OR, 1.53; 95% CI, 1.15-2.04; P = .003).

For patients in the middle and upper tertiles, there was no significant association between weight-bearing activity and the odds of incident OA (OR, 0.93; P = .73, and OR, 1.15; P = .40, respectively).

The findings are reassuring overall, said Kelli D. Allen, PhD, research professor of medicine and exercise physiologist at the University of North Carolina at Chapel Hill, who was asked to comment on the study. “The study corroborates prior research showing that for most people, weight-bearing recreational activity does not increase the risk of knee osteoarthritis. This should be encouraging for people who want to increase their physical activity,” she said.

Physical Activity Types, Other Analyses

The researchers assessed total, weight-bearing, and non–weight-bearing physical activity using two validated questionnaires (an adapted version of the Zutphen Physical Activity Questionnaire and the Longitudinal Aging Study Amsterdam physical activity questionnaire) that asked participants about the frequency and duration of various types of physical activity. Activity was quantified as metabolic equivalent of task (MET) hours per week, and weight-bearing activities were defined as those in which the knee joint bears the body’s weight.

Walking, gardening, golf, dancing, and ball sports were among the activities qualifying as weight-bearing activities. Non–weight-bearing activities included cycling, rowing, and swimming.

Sex, body mass index, and follow-up time were among the covariates adjusted for in the primary analysis. Similar results were found when adjustments were also made for educational level, alcohol intake, lipid levels, and diabetes.

While incident radiographic knee OA (measured using the Kellgren & Lawrence grading system) was the primary outcome, the researchers also looked at symptomatic knee OA, as defined by x-ray and a knee pain questionnaire, and found no significant association of its incidence with any of the exercise categories (total, weight-bearing, or non-weight-bearing).

Coauthor Joyce B. J. van Meurs, PhD, of the departments of internal medicine and orthopedics & sports medicine at Erasmus Medical Center, told this news organization that “pain as a subjective, recurrent symptom is more difficult to study … [and] a larger sample size or more precise measurements [of pain] in future studies would help to better understand the true association” of symptomatic knee OA and physical activity.

Similarly, analyses of the 1511 patients (out of 5003) who had knee pain at baseline found no significant association of weight-bearing or non–weight-bearing physical activity with incident radiographic knee OA. The trends were similar to those found in the population without knee pain, however, which suggests the analysis was underpowered, the researchers wrote, noting too that patients with baseline pain had lower activity levels than those without pain. (Low case numbers precluded a stratification analysis on LMI for incident symptomatic OA.)
 

Thigh Circumference as an Indicator of Muscle Mass

The findings build upon an international meta-analysis published in 2021 that found no association between total physical activity and knee OA and align with other studies suggesting a link between greater mechanical stress/strain and greater OA risk, the researchers wrote. (The meta-analysis couldn’t investigate different types of activity.)

“Although we cannot establish a causal relationship … we hypothesize that the mechanical loading on joints and cartilage could explain the association of weight-bearing activity with osteoarthritis in the low LMI tertile group,” they said.

It is possible that thigh muscle-specific strength or mass may temper the risk of knee OA, they wrote, but the lack of thigh strength data in the Rotterdam Study precluded such evaluation. Still, in everyday practice, the researchers noted, lower limb muscle function could be assessed using thigh circumference.

Dr. Allen agreed. “ ‘Gold standard’ assessment of muscle mass is not common in routine practice, but clinicians can evaluate muscle mass in other ways, such as thigh circumference,” she told this news organization, noting that measurement should align with procedures described by the National Health and Nutrition Examination Survey in its anthropometry procedures manual.

“If low lower-limb muscle mass is suspected, a referral to a physical therapist can be helpful for more formally assessing muscle mass and muscle strength,” she added, “and for instructions for a safe and appropriate exercise program for building muscle and protecting joints.”

Among other limitations of the study, according to the researchers, are an ethnically nondiverse population, the unavailability of knee injury data, and the assessment of physical activity only at baseline.

Moving forward, Dr. van Meurs told this news organization, “the main question regarding physical activity and OA is still, if people already have pain or early OA complaints, what kinds of sports they can do without hurting their joints?” This “should be tested,” she said, “in a real-life, ideally trial-like intervention study.”

The study was funded by the Erasmus Medical Center and Erasmus University as well as through various government grants. Dr. Wu also had study support from the China Scholarship Council. Two of the authors reported relationships with arthritis-related organizations. Dr. Allen reported having no disclosures relevant to her comments.

Weight-bearing recreational activity was associated with a 22% increased odds of developing knee osteoarthritis (OA) in a large prospective cohort study in the Netherlands, but notably, the increased risk was seen only in those with low levels of lower-limb muscle mass.

The findings point toward the value of “tailored advice” for physical activity, and suggest that “caution is needed when engaging in weight-bearing activity, especially for individuals with low levels of lower-limb muscle mass,” Yahong Wu, MD, and coinvestigators, of the Erasmus Medical Center in Rotterdam, the Netherlands, wrote in JAMA Network Open.

kali9/Getty Images

Investigators used data from sequential cohorts of the longitudinal Rotterdam Study, which enrolled people aged 45 and older starting in 1990. The 5003 participants in this new analysis of physical activity and knee OA had complete records of baseline recreational physical activity, baseline knee pain, and knee radiographs from both baseline and at least one follow-up exam. Those with radiographically defined knee OA at baseline were excluded.

The incident rate of radiographically defined (x-ray) knee OA among all participants was 8.4%, with a mean follow-up time of 6.33 years. Among 3492 individuals without baseline knee pain, the researchers found no increased odds of incident radiographic OA with non–weight-bearing activity (odds ratio [OR], 1.04; 95% CI, 0.95-1.15; P = .37) but a significant association of weight-bearing activity with OA incidence (OR, 1.22; 95% CI, 1.10-1.35; P < .001).

A stratification analysis of a subset of participants whose lower-limb mass had been measured by dual-energy x-ray absorptiometry (DXA) showed, however, that the association of weight-bearing activity with incident OA was limited to patients in the lowest third of lower-limb muscle mass index (LMI), who had a 53% increased likelihood of developing knee OA (OR, 1.53; 95% CI, 1.15-2.04; P = .003).

For patients in the middle and upper tertiles, there was no significant association between weight-bearing activity and the odds of incident OA (OR, 0.93; P = .73, and OR, 1.15; P = .40, respectively).

The findings are reassuring overall, said Kelli D. Allen, PhD, research professor of medicine and exercise physiologist at the University of North Carolina at Chapel Hill, who was asked to comment on the study. “The study corroborates prior research showing that for most people, weight-bearing recreational activity does not increase the risk of knee osteoarthritis. This should be encouraging for people who want to increase their physical activity,” she said.

Physical Activity Types, Other Analyses

The researchers assessed total, weight-bearing, and non–weight-bearing physical activity using two validated questionnaires (an adapted version of the Zutphen Physical Activity Questionnaire and the Longitudinal Aging Study Amsterdam physical activity questionnaire) that asked participants about the frequency and duration of various types of physical activity. Activity was quantified as metabolic equivalent of task (MET) hours per week, and weight-bearing activities were defined as those in which the knee joint bears the body’s weight.

Walking, gardening, golf, dancing, and ball sports were among the activities qualifying as weight-bearing activities. Non–weight-bearing activities included cycling, rowing, and swimming.

Sex, body mass index, and follow-up time were among the covariates adjusted for in the primary analysis. Similar results were found when adjustments were also made for educational level, alcohol intake, lipid levels, and diabetes.

While incident radiographic knee OA (measured using the Kellgren & Lawrence grading system) was the primary outcome, the researchers also looked at symptomatic knee OA, as defined by x-ray and a knee pain questionnaire, and found no significant association of its incidence with any of the exercise categories (total, weight-bearing, or non-weight-bearing).

Coauthor Joyce B. J. van Meurs, PhD, of the departments of internal medicine and orthopedics & sports medicine at Erasmus Medical Center, told this news organization that “pain as a subjective, recurrent symptom is more difficult to study … [and] a larger sample size or more precise measurements [of pain] in future studies would help to better understand the true association” of symptomatic knee OA and physical activity.

Similarly, analyses of the 1511 patients (out of 5003) who had knee pain at baseline found no significant association of weight-bearing or non–weight-bearing physical activity with incident radiographic knee OA. The trends were similar to those found in the population without knee pain, however, which suggests the analysis was underpowered, the researchers wrote, noting too that patients with baseline pain had lower activity levels than those without pain. (Low case numbers precluded a stratification analysis on LMI for incident symptomatic OA.)
 

Thigh Circumference as an Indicator of Muscle Mass

The findings build upon an international meta-analysis published in 2021 that found no association between total physical activity and knee OA and align with other studies suggesting a link between greater mechanical stress/strain and greater OA risk, the researchers wrote. (The meta-analysis couldn’t investigate different types of activity.)

“Although we cannot establish a causal relationship … we hypothesize that the mechanical loading on joints and cartilage could explain the association of weight-bearing activity with osteoarthritis in the low LMI tertile group,” they said.

It is possible that thigh muscle-specific strength or mass may temper the risk of knee OA, they wrote, but the lack of thigh strength data in the Rotterdam Study precluded such evaluation. Still, in everyday practice, the researchers noted, lower limb muscle function could be assessed using thigh circumference.

Dr. Allen agreed. “ ‘Gold standard’ assessment of muscle mass is not common in routine practice, but clinicians can evaluate muscle mass in other ways, such as thigh circumference,” she told this news organization, noting that measurement should align with procedures described by the National Health and Nutrition Examination Survey in its anthropometry procedures manual.

“If low lower-limb muscle mass is suspected, a referral to a physical therapist can be helpful for more formally assessing muscle mass and muscle strength,” she added, “and for instructions for a safe and appropriate exercise program for building muscle and protecting joints.”

Among other limitations of the study, according to the researchers, are an ethnically nondiverse population, the unavailability of knee injury data, and the assessment of physical activity only at baseline.

Moving forward, Dr. van Meurs told this news organization, “the main question regarding physical activity and OA is still, if people already have pain or early OA complaints, what kinds of sports they can do without hurting their joints?” This “should be tested,” she said, “in a real-life, ideally trial-like intervention study.”

The study was funded by the Erasmus Medical Center and Erasmus University as well as through various government grants. Dr. Wu also had study support from the China Scholarship Council. Two of the authors reported relationships with arthritis-related organizations. Dr. Allen reported having no disclosures relevant to her comments.