ALL

Chicago — The latest findings from the FELIX phase 1b/2 study confirm the efficacy of obecabtagene autoleucel (obe-cel/Auto1, Autolus Therapeutics) and establish the CD19-directed autologous chimeric antigen receptor (CAR) T-cell product as a standard-of-care therapy for adults with relapsed or refractory B-cell acute lymphoblastic leukemia (R/R B-ALL).

These findings also highlight the favorable impact of CAR T persistence on treatment outcomes, and suggest that consolidative stem cell transplant (SCT) in R/R B-ALL patients treated with obe-cel does not improve outcomes, Elias Jabbour, MD, of the University of Texas MD Anderson Cancer Center, Houston, reported at the American Society of Clinical Oncology (ASCO) annual meeting.

The overall complete remission or complete remission with incomplete count recovery rate was 78% among 127 patients enrolled in the open-label, single-arm study and infused with obe-cel. Among the 99 patients who responded, 18 proceeded to consolidative SCT while in remission, Dr. Jabbour said, noting that all 18 who received SCT were in minimal residual disease (MRD)–negative remission at the time of transplant.

Of those 18 patients, 10 had ongoing CAR T persistence prior to transplant, he said.

At median follow-up of 21.5 months, 40% of responders were in ongoing remission without the need for subsequent consolidation with SCT or other therapy, whereas SCT did not appear to improve outcomes.

The median event-free survival (EFS) after censoring for transplant was 11.9 months, and the 12-month EFS rate was 49.5%. Without censoring for transplant, the EFS and 12-month EFS rate were 9.0 months and 44%, respectively.

“I would like to highlight that the time to transplant was 100 days, and of those 18 patients, all in MRD-negative status ... 80% relapsed or died from transplant-related complications,” Dr. Jabbour said.

Median overall survival (OS) without censoring for transplant was 15.6 months, and the 12-month OS rate was 61.1%. After censoring for transplant, the median OS and 12-month OS rate 23.8 months 63.7%, respectively. The survival curves were fully overlapping, indicating that transplant did not improve OS outcomes.

“Furthermore, when you look at the EFS and [OS], both show a potential plateau for a long-term outcome, and this trend is similar to what was reported in a phase 1 trial with 2 years of follow up and more,” Dr. Jabbour said.

The investigators also assessed the impact of loss of CAR T-cell persistence and loss of B-cell aplasia and found that “both ongoing CAR T-cell persistence and ongoing B-cell aplasia, were correlated with better event-free survival,” he noted, explaining that the risk of relapse was 2.7 times greater in those who lost versus maintained CAR T-cell persistence, and 1.7 times greater in those who lost versus maintained B-cell aplasia.

Among those with ongoing remission at 6 months, median EFS was 15.1 months in those who lost CAR T-cell persistence, whereas the median EFS was not reached in those who maintained CAR T-cell persistence.

Obe-cel is an autologous CAR T-cell product with a fast off-rate CD19 binder designed to mitigate immunotoxicity and improve CAR T-cell expansion and persistence, Dr. Jabbour said, noting that pooled efficacy and safety results from the FELIX phase 1b and 2 trials of heavily pretreated patients have previously been reported.

The findings support the use of obe-cel as a standard treatment in this patient population, and demonstrate that ongoing CAR T-cell persistence and B-cell aplasia are associated with improved EFS — without further consolidation therapy after treatment, he concluded.

This study was funded by Autolus Therapeutics. Dr. Jabbour disclosed ties with Abbvie, Ascentage Pharma, Adaptive Biotechnologies, Amgen, Astellas Pharma, Bristol-Myers Squibb, Genentech, Incyte, Pfizer, and Takeda.

Chicago — The latest findings from the FELIX phase 1b/2 study confirm the efficacy of obecabtagene autoleucel (obe-cel/Auto1, Autolus Therapeutics) and establish the CD19-directed autologous chimeric antigen receptor (CAR) T-cell product as a standard-of-care therapy for adults with relapsed or refractory B-cell acute lymphoblastic leukemia (R/R B-ALL).

These findings also highlight the favorable impact of CAR T persistence on treatment outcomes, and suggest that consolidative stem cell transplant (SCT) in R/R B-ALL patients treated with obe-cel does not improve outcomes, Elias Jabbour, MD, of the University of Texas MD Anderson Cancer Center, Houston, reported at the American Society of Clinical Oncology (ASCO) annual meeting.

The overall complete remission or complete remission with incomplete count recovery rate was 78% among 127 patients enrolled in the open-label, single-arm study and infused with obe-cel. Among the 99 patients who responded, 18 proceeded to consolidative SCT while in remission, Dr. Jabbour said, noting that all 18 who received SCT were in minimal residual disease (MRD)–negative remission at the time of transplant.

Of those 18 patients, 10 had ongoing CAR T persistence prior to transplant, he said.

At median follow-up of 21.5 months, 40% of responders were in ongoing remission without the need for subsequent consolidation with SCT or other therapy, whereas SCT did not appear to improve outcomes.

The median event-free survival (EFS) after censoring for transplant was 11.9 months, and the 12-month EFS rate was 49.5%. Without censoring for transplant, the EFS and 12-month EFS rate were 9.0 months and 44%, respectively.

“I would like to highlight that the time to transplant was 100 days, and of those 18 patients, all in MRD-negative status ... 80% relapsed or died from transplant-related complications,” Dr. Jabbour said.

Median overall survival (OS) without censoring for transplant was 15.6 months, and the 12-month OS rate was 61.1%. After censoring for transplant, the median OS and 12-month OS rate 23.8 months 63.7%, respectively. The survival curves were fully overlapping, indicating that transplant did not improve OS outcomes.

“Furthermore, when you look at the EFS and [OS], both show a potential plateau for a long-term outcome, and this trend is similar to what was reported in a phase 1 trial with 2 years of follow up and more,” Dr. Jabbour said.

The investigators also assessed the impact of loss of CAR T-cell persistence and loss of B-cell aplasia and found that “both ongoing CAR T-cell persistence and ongoing B-cell aplasia, were correlated with better event-free survival,” he noted, explaining that the risk of relapse was 2.7 times greater in those who lost versus maintained CAR T-cell persistence, and 1.7 times greater in those who lost versus maintained B-cell aplasia.

Among those with ongoing remission at 6 months, median EFS was 15.1 months in those who lost CAR T-cell persistence, whereas the median EFS was not reached in those who maintained CAR T-cell persistence.

Obe-cel is an autologous CAR T-cell product with a fast off-rate CD19 binder designed to mitigate immunotoxicity and improve CAR T-cell expansion and persistence, Dr. Jabbour said, noting that pooled efficacy and safety results from the FELIX phase 1b and 2 trials of heavily pretreated patients have previously been reported.

The findings support the use of obe-cel as a standard treatment in this patient population, and demonstrate that ongoing CAR T-cell persistence and B-cell aplasia are associated with improved EFS — without further consolidation therapy after treatment, he concluded.

This study was funded by Autolus Therapeutics. Dr. Jabbour disclosed ties with Abbvie, Ascentage Pharma, Adaptive Biotechnologies, Amgen, Astellas Pharma, Bristol-Myers Squibb, Genentech, Incyte, Pfizer, and Takeda.

Chicago — The latest findings from the FELIX phase 1b/2 study confirm the efficacy of obecabtagene autoleucel (obe-cel/Auto1, Autolus Therapeutics) and establish the CD19-directed autologous chimeric antigen receptor (CAR) T-cell product as a standard-of-care therapy for adults with relapsed or refractory B-cell acute lymphoblastic leukemia (R/R B-ALL).

These findings also highlight the favorable impact of CAR T persistence on treatment outcomes, and suggest that consolidative stem cell transplant (SCT) in R/R B-ALL patients treated with obe-cel does not improve outcomes, Elias Jabbour, MD, of the University of Texas MD Anderson Cancer Center, Houston, reported at the American Society of Clinical Oncology (ASCO) annual meeting.

The overall complete remission or complete remission with incomplete count recovery rate was 78% among 127 patients enrolled in the open-label, single-arm study and infused with obe-cel. Among the 99 patients who responded, 18 proceeded to consolidative SCT while in remission, Dr. Jabbour said, noting that all 18 who received SCT were in minimal residual disease (MRD)–negative remission at the time of transplant.

Of those 18 patients, 10 had ongoing CAR T persistence prior to transplant, he said.

At median follow-up of 21.5 months, 40% of responders were in ongoing remission without the need for subsequent consolidation with SCT or other therapy, whereas SCT did not appear to improve outcomes.

The median event-free survival (EFS) after censoring for transplant was 11.9 months, and the 12-month EFS rate was 49.5%. Without censoring for transplant, the EFS and 12-month EFS rate were 9.0 months and 44%, respectively.

“I would like to highlight that the time to transplant was 100 days, and of those 18 patients, all in MRD-negative status ... 80% relapsed or died from transplant-related complications,” Dr. Jabbour said.

Median overall survival (OS) without censoring for transplant was 15.6 months, and the 12-month OS rate was 61.1%. After censoring for transplant, the median OS and 12-month OS rate 23.8 months 63.7%, respectively. The survival curves were fully overlapping, indicating that transplant did not improve OS outcomes.

“Furthermore, when you look at the EFS and [OS], both show a potential plateau for a long-term outcome, and this trend is similar to what was reported in a phase 1 trial with 2 years of follow up and more,” Dr. Jabbour said.

The investigators also assessed the impact of loss of CAR T-cell persistence and loss of B-cell aplasia and found that “both ongoing CAR T-cell persistence and ongoing B-cell aplasia, were correlated with better event-free survival,” he noted, explaining that the risk of relapse was 2.7 times greater in those who lost versus maintained CAR T-cell persistence, and 1.7 times greater in those who lost versus maintained B-cell aplasia.

Among those with ongoing remission at 6 months, median EFS was 15.1 months in those who lost CAR T-cell persistence, whereas the median EFS was not reached in those who maintained CAR T-cell persistence.

Obe-cel is an autologous CAR T-cell product with a fast off-rate CD19 binder designed to mitigate immunotoxicity and improve CAR T-cell expansion and persistence, Dr. Jabbour said, noting that pooled efficacy and safety results from the FELIX phase 1b and 2 trials of heavily pretreated patients have previously been reported.

The findings support the use of obe-cel as a standard treatment in this patient population, and demonstrate that ongoing CAR T-cell persistence and B-cell aplasia are associated with improved EFS — without further consolidation therapy after treatment, he concluded.

This study was funded by Autolus Therapeutics. Dr. Jabbour disclosed ties with Abbvie, Ascentage Pharma, Adaptive Biotechnologies, Amgen, Astellas Pharma, Bristol-Myers Squibb, Genentech, Incyte, Pfizer, and Takeda.

MONTREAL – Levels of neurofilament light chain (Nfl) may be a biomarker of chemotherapy-induced peripheral neurotoxicity (CIPN), new research suggests.

Investigators found Nfl levels increased in cancer patients following a first infusion of the medication paclitaxel and corresponded to neuropathy severity 6-12 months post-treatment, suggesting the blood protein may provide an early CIPN biomarker.

“Nfl after a single cycle could detect axonal degeneration,” said lead investigator Masarra Joda, a researcher and PhD candidate at the University of Sydney in Australia. She added that “quantification of Nfl may provide a clinically useful marker of emerging neurotoxicity in patients vulnerable to CIPN.”

The findings were presented at the Peripheral Nerve Society (PNS) 2024 annual meeting.
 

Common, Burdensome Side Effect

A common side effect of chemotherapy, CIPN manifests as sensory neuropathy and causes degeneration of the peripheral axons. A protein biomarker of axonal degeneration, Nfl has previously been investigated as a way of identifying patients at risk of CIPN.

The goal of the current study was to identify the potential link between Nfl with neurophysiological markers of axon degeneration in patients receiving the neurotoxin chemotherapy paclitaxel.

The study included 93 cancer patients. All were assessed at the beginning, middle, and end of treatment. CIPN was assessed using blood samples of Nfl and the Total Neuropathy Score (TNS), the Common Terminology Criteria for Adverse Events (CTCAE) neuropathy scale, and patient-reported measures using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire–Chemotherapy-Induced Peripheral Neuropathy Module (EORTC-CIPN20).

Axonal degeneration was measured with neurophysiological tests including sural nerve compound sensory action potential (CSAP) for the lower limbs, and sensory median nerve CSAP, as well as stimulus threshold testing, for the upper limbs. 

Almost all of study participants (97%) were female. The majority (66%) had breast cancer and 30% had gynecological cancer. Most (73%) were receiving a weekly regimen of paclitaxel, and the remainder were treated with taxanes plus platinum once every 3 weeks. By the end of treatment, 82% of the patients had developed CIPN, which was mild in 44% and moderate/severe in 38%. 

Nfl levels increased significantly from baseline to after the first dose of chemotherapy (P < .001), “highlighting that nerve damage occurs from the very beginning of treatment,” senior investigator Susanna Park, PhD, told this news organization. 

In addition, “patients with higher Nfl levels after a single paclitaxel treatment had greater neuropathy at the end of treatment (higher EORTC scores [P ≤ .026], and higher TNS scores [P ≤ .00]),” added Dr. Park, who is associate professor at the University of Sydney.

“Importantly, we also looked at long-term outcomes beyond the end of chemotherapy, because chronic neuropathy produces a significant burden in cancer survivors,” said Dr. Park. 

“Among a total of 44 patients who completed the 6- to 12-month post-treatment follow-up, NfL levels after a single treatment were linked to severity of nerve damage quantified with neurophysiological tests, and greater Nfl levels at mid-treatment were correlated with worse patient and neurologically graded neuropathy at 6-12 months.”

Dr. Park said the results suggest that NfL may provide a biomarker of long-term axon damage and that Nfl assays “may enable clinicians to evaluate the risk of long-term toxicity early during paclitaxel treatment to hopefully provide clinically significant information to guide better treatment titration.” 

Currently, she said, CIPN is a prominent cause of dose reduction and early chemotherapy cessation. 

“For example, in early breast cancer around 25% of patients experience a dose reduction due to the severity of neuropathy symptoms.” But, she said, “there is no standardized way of identifying which patients are at risk of long-term neuropathy and therefore, may benefit more from dose reduction. In this setting, a biomarker such as Nfl could provide oncologists with more information about the risk of long-term toxicity and take that into account in dose decision-making.” 

For some cancers, she added, there are multiple potential therapy options.

“A biomarker such as NfL could assist in determining risk-benefit profile in terms of switching to alternate therapies. However, further studies will be needed to fully define the utility of NfL as a biomarker of paclitaxel neuropathy.” 
 

Promising Research

Commenting on the research for this news organization, Maryam Lustberg, MD, associate professor, director of the Center for Breast Cancer at Smilow Cancer Hospital and Yale Cancer Center, and chief of Breast Medical Oncology at Yale Cancer Center, in New Haven, Connecticut, said the study “builds on a body of work previously reported by others showing that neurofilament light chains as detected in the blood can be associated with early signs of neurotoxic injury.” 

She added that the research “is promising, since existing clinical and patient-reported measures tend to under-detect chemotherapy-induced neuropathy until more permanent injury might have occurred.” 

Dr. Lustberg, who is immediate past president of the Multinational Association of Supportive Care in Cancer, said future studies are needed before Nfl testing can be implemented in routine practice, but that “early detection will allow earlier initiation of supportive care strategies such as physical therapy and exercise, as well as dose modifications, which may be helpful for preventing permanent damage and improving quality of life.” 

The investigators and Dr. Lustberg report no relevant financial relationships.

A version of this article appeared on Medscape.com.

MONTREAL – Levels of neurofilament light chain (Nfl) may be a biomarker of chemotherapy-induced peripheral neurotoxicity (CIPN), new research suggests.

Investigators found Nfl levels increased in cancer patients following a first infusion of the medication paclitaxel and corresponded to neuropathy severity 6-12 months post-treatment, suggesting the blood protein may provide an early CIPN biomarker.

“Nfl after a single cycle could detect axonal degeneration,” said lead investigator Masarra Joda, a researcher and PhD candidate at the University of Sydney in Australia. She added that “quantification of Nfl may provide a clinically useful marker of emerging neurotoxicity in patients vulnerable to CIPN.”

The findings were presented at the Peripheral Nerve Society (PNS) 2024 annual meeting.
 

Common, Burdensome Side Effect

A common side effect of chemotherapy, CIPN manifests as sensory neuropathy and causes degeneration of the peripheral axons. A protein biomarker of axonal degeneration, Nfl has previously been investigated as a way of identifying patients at risk of CIPN.

The goal of the current study was to identify the potential link between Nfl with neurophysiological markers of axon degeneration in patients receiving the neurotoxin chemotherapy paclitaxel.

The study included 93 cancer patients. All were assessed at the beginning, middle, and end of treatment. CIPN was assessed using blood samples of Nfl and the Total Neuropathy Score (TNS), the Common Terminology Criteria for Adverse Events (CTCAE) neuropathy scale, and patient-reported measures using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire–Chemotherapy-Induced Peripheral Neuropathy Module (EORTC-CIPN20).

Axonal degeneration was measured with neurophysiological tests including sural nerve compound sensory action potential (CSAP) for the lower limbs, and sensory median nerve CSAP, as well as stimulus threshold testing, for the upper limbs. 

Almost all of study participants (97%) were female. The majority (66%) had breast cancer and 30% had gynecological cancer. Most (73%) were receiving a weekly regimen of paclitaxel, and the remainder were treated with taxanes plus platinum once every 3 weeks. By the end of treatment, 82% of the patients had developed CIPN, which was mild in 44% and moderate/severe in 38%. 

Nfl levels increased significantly from baseline to after the first dose of chemotherapy (P < .001), “highlighting that nerve damage occurs from the very beginning of treatment,” senior investigator Susanna Park, PhD, told this news organization. 

In addition, “patients with higher Nfl levels after a single paclitaxel treatment had greater neuropathy at the end of treatment (higher EORTC scores [P ≤ .026], and higher TNS scores [P ≤ .00]),” added Dr. Park, who is associate professor at the University of Sydney.

“Importantly, we also looked at long-term outcomes beyond the end of chemotherapy, because chronic neuropathy produces a significant burden in cancer survivors,” said Dr. Park. 

“Among a total of 44 patients who completed the 6- to 12-month post-treatment follow-up, NfL levels after a single treatment were linked to severity of nerve damage quantified with neurophysiological tests, and greater Nfl levels at mid-treatment were correlated with worse patient and neurologically graded neuropathy at 6-12 months.”

Dr. Park said the results suggest that NfL may provide a biomarker of long-term axon damage and that Nfl assays “may enable clinicians to evaluate the risk of long-term toxicity early during paclitaxel treatment to hopefully provide clinically significant information to guide better treatment titration.” 

Currently, she said, CIPN is a prominent cause of dose reduction and early chemotherapy cessation. 

“For example, in early breast cancer around 25% of patients experience a dose reduction due to the severity of neuropathy symptoms.” But, she said, “there is no standardized way of identifying which patients are at risk of long-term neuropathy and therefore, may benefit more from dose reduction. In this setting, a biomarker such as Nfl could provide oncologists with more information about the risk of long-term toxicity and take that into account in dose decision-making.” 

For some cancers, she added, there are multiple potential therapy options.

“A biomarker such as NfL could assist in determining risk-benefit profile in terms of switching to alternate therapies. However, further studies will be needed to fully define the utility of NfL as a biomarker of paclitaxel neuropathy.” 
 

Promising Research

Commenting on the research for this news organization, Maryam Lustberg, MD, associate professor, director of the Center for Breast Cancer at Smilow Cancer Hospital and Yale Cancer Center, and chief of Breast Medical Oncology at Yale Cancer Center, in New Haven, Connecticut, said the study “builds on a body of work previously reported by others showing that neurofilament light chains as detected in the blood can be associated with early signs of neurotoxic injury.” 

She added that the research “is promising, since existing clinical and patient-reported measures tend to under-detect chemotherapy-induced neuropathy until more permanent injury might have occurred.” 

Dr. Lustberg, who is immediate past president of the Multinational Association of Supportive Care in Cancer, said future studies are needed before Nfl testing can be implemented in routine practice, but that “early detection will allow earlier initiation of supportive care strategies such as physical therapy and exercise, as well as dose modifications, which may be helpful for preventing permanent damage and improving quality of life.” 

The investigators and Dr. Lustberg report no relevant financial relationships.

A version of this article appeared on Medscape.com.

MONTREAL – Levels of neurofilament light chain (Nfl) may be a biomarker of chemotherapy-induced peripheral neurotoxicity (CIPN), new research suggests.

Investigators found Nfl levels increased in cancer patients following a first infusion of the medication paclitaxel and corresponded to neuropathy severity 6-12 months post-treatment, suggesting the blood protein may provide an early CIPN biomarker.

“Nfl after a single cycle could detect axonal degeneration,” said lead investigator Masarra Joda, a researcher and PhD candidate at the University of Sydney in Australia. She added that “quantification of Nfl may provide a clinically useful marker of emerging neurotoxicity in patients vulnerable to CIPN.”

The findings were presented at the Peripheral Nerve Society (PNS) 2024 annual meeting.
 

Common, Burdensome Side Effect

A common side effect of chemotherapy, CIPN manifests as sensory neuropathy and causes degeneration of the peripheral axons. A protein biomarker of axonal degeneration, Nfl has previously been investigated as a way of identifying patients at risk of CIPN.

The goal of the current study was to identify the potential link between Nfl with neurophysiological markers of axon degeneration in patients receiving the neurotoxin chemotherapy paclitaxel.

The study included 93 cancer patients. All were assessed at the beginning, middle, and end of treatment. CIPN was assessed using blood samples of Nfl and the Total Neuropathy Score (TNS), the Common Terminology Criteria for Adverse Events (CTCAE) neuropathy scale, and patient-reported measures using the European Organization for Research and Treatment of Cancer Quality of Life Questionnaire–Chemotherapy-Induced Peripheral Neuropathy Module (EORTC-CIPN20).

Axonal degeneration was measured with neurophysiological tests including sural nerve compound sensory action potential (CSAP) for the lower limbs, and sensory median nerve CSAP, as well as stimulus threshold testing, for the upper limbs. 

Almost all of study participants (97%) were female. The majority (66%) had breast cancer and 30% had gynecological cancer. Most (73%) were receiving a weekly regimen of paclitaxel, and the remainder were treated with taxanes plus platinum once every 3 weeks. By the end of treatment, 82% of the patients had developed CIPN, which was mild in 44% and moderate/severe in 38%. 

Nfl levels increased significantly from baseline to after the first dose of chemotherapy (P < .001), “highlighting that nerve damage occurs from the very beginning of treatment,” senior investigator Susanna Park, PhD, told this news organization. 

In addition, “patients with higher Nfl levels after a single paclitaxel treatment had greater neuropathy at the end of treatment (higher EORTC scores [P ≤ .026], and higher TNS scores [P ≤ .00]),” added Dr. Park, who is associate professor at the University of Sydney.

“Importantly, we also looked at long-term outcomes beyond the end of chemotherapy, because chronic neuropathy produces a significant burden in cancer survivors,” said Dr. Park. 

“Among a total of 44 patients who completed the 6- to 12-month post-treatment follow-up, NfL levels after a single treatment were linked to severity of nerve damage quantified with neurophysiological tests, and greater Nfl levels at mid-treatment were correlated with worse patient and neurologically graded neuropathy at 6-12 months.”

Dr. Park said the results suggest that NfL may provide a biomarker of long-term axon damage and that Nfl assays “may enable clinicians to evaluate the risk of long-term toxicity early during paclitaxel treatment to hopefully provide clinically significant information to guide better treatment titration.” 

Currently, she said, CIPN is a prominent cause of dose reduction and early chemotherapy cessation. 

“For example, in early breast cancer around 25% of patients experience a dose reduction due to the severity of neuropathy symptoms.” But, she said, “there is no standardized way of identifying which patients are at risk of long-term neuropathy and therefore, may benefit more from dose reduction. In this setting, a biomarker such as Nfl could provide oncologists with more information about the risk of long-term toxicity and take that into account in dose decision-making.” 

For some cancers, she added, there are multiple potential therapy options.

“A biomarker such as NfL could assist in determining risk-benefit profile in terms of switching to alternate therapies. However, further studies will be needed to fully define the utility of NfL as a biomarker of paclitaxel neuropathy.” 
 

Promising Research

Commenting on the research for this news organization, Maryam Lustberg, MD, associate professor, director of the Center for Breast Cancer at Smilow Cancer Hospital and Yale Cancer Center, and chief of Breast Medical Oncology at Yale Cancer Center, in New Haven, Connecticut, said the study “builds on a body of work previously reported by others showing that neurofilament light chains as detected in the blood can be associated with early signs of neurotoxic injury.” 

She added that the research “is promising, since existing clinical and patient-reported measures tend to under-detect chemotherapy-induced neuropathy until more permanent injury might have occurred.” 

Dr. Lustberg, who is immediate past president of the Multinational Association of Supportive Care in Cancer, said future studies are needed before Nfl testing can be implemented in routine practice, but that “early detection will allow earlier initiation of supportive care strategies such as physical therapy and exercise, as well as dose modifications, which may be helpful for preventing permanent damage and improving quality of life.” 

The investigators and Dr. Lustberg report no relevant financial relationships.

A version of this article appeared on Medscape.com.

When he completed his fellowship at Fox Chase Cancer Center in Philadelphia, Moshe Chasky, MD, joined a small five-person practice that rented space from the city’s Jefferson Hospital in Philadelphia. The arrangement seemed to work well for the hospital and the small practice, which remained independent.

Within 10 years, the hospital sought to buy the practice, Alliance Cancer Specialists.

But the oncologists at Alliance did not want to join Jefferson.

The hospital eventually entered into an exclusive agreement with its own medical group to provide inpatient oncology/hematology services at three Jefferson Health–Northeast hospitals and stripped Dr. Chasky and his colleagues of their privileges at those facilities, Medscape Medical News reported last year.

The Alliance story is a familiar one for independent community oncology practices, said Jeff Patton, MD, CEO of OneOncology, a management services organization.

A 2020 report from the Community Oncology Alliance (COA), for instance, tracked mergers, acquisitions, and closures in the community oncology setting and found the number of practices acquired by hospitals, known as vertical integration, nearly tripled from 2010 to 2020.

“Some hospitals are pretty predatory in their approach,” Dr. Patton said. If hospitals have their own oncology program, “they’ll employ the referring doctors and then discourage them or prevent them from referring patients to our independent practices that are not owned by the hospital.”

Still, in the face of growing pressure to join hospitals, some community oncology practices are finding ways to survive and maintain their independence.
 

A Growing Trend

The latest data continue to show a clear trend: Consolidation in oncology is on the rise.

A 2024 study revealed that the pace of consolidation seems to be increasing.

The analysis found that, between 2015 and 2022, the number of medical oncologists increased by 14% and the number of medical oncologists per practice increased by 40%, while the number of practices decreased by 18%.

While about 44% of practices remain independent, the percentage of medical oncologists working in practices with more than 25 clinicians has increased from 34% in 2015 to 44% in 2022. By 2022, the largest 102 practices in the United States employed more than 40% of all medical oncologists.

“The rate of consolidation seems to be rapid,” study coauthor Parsa Erfani, MD, an internal medicine resident at Brigham & Women’s Hospital, Boston, explained.

Consolidation appears to breed more consolidation. The researchers found, for instance, that markets with greater hospital consolidation and more hospital beds per capita were more likely to undergo consolidation in oncology.

Consolidation may be higher in these markets “because hospitals or health systems are buying up oncology practices or conversely because oncology practices are merging to compete more effectively with larger hospitals in the area,” Dr. Erfani told this news organization.

Mergers among independent practices, known as horizontal integration, have also been on the rise, according to the 2020 COA report. These mergers can help counter pressures from hospitals seeking to acquire community practices as well as prevent practices and their clinics from closing.

Although Dr. Erfani’s research wasn’t designed to determine the factors behind consolidation, he and his colleagues point to the Affordable Care Act (ACA) and the federal 340B Drug Pricing Program as potential drivers of this trend.

The ACA encouraged consolidation as a way to improve efficiency and created the need for ever-larger information systems to collect and report quality data. But these data collection and reporting requirements have become increasingly difficult for smaller practices to take on.

The 340B Program, however, may be a bigger contributing factor to consolidation. Created in 1992, the 340B Program allows qualifying hospitals and clinics that treat low-income and uninsured patients to buy outpatient prescription drugs at a 25%-50% discount.

Hospitals seeking to capitalize on the margins possible under the 340B Program will “buy all the referring physicians in a market so that the medical oncology group is left with little choice but to sell to the hospital,” said Dr. Patton.

“Those 340B dollars are worth a lot to hospitals,” said David A. Eagle, MD, a hematologist/oncologist with New York Cancer & Blood Specialists and past president of COA. The program “creates an appetite for nonprofit hospitals to want to grow their medical oncology programs,” he told this news organization.

Declining Medicare reimbursement has also hit independent practices hard.

Over the past 15 years, compared with inflation, physicians have gotten “a pay rate decrease from Medicare,” said Dr. Patton. Payers have followed that lead and tried to cut pay for clinicians, especially those who do not have market share, he said. Paying them less is “disingenuous knowing that our costs of providing care are going up,” he said.
 

Less Access, Higher Costs, Worse Care?

Many studies have demonstrated that, when hospitals become behemoths in a given market, healthcare costs go up.

“There are robust data showing that consolidation increases healthcare costs by reducing competition, including in oncology,” wrote Dr. Erfani and colleagues.

Oncology practices that are owned by hospitals bill facility fees for outpatient chemotherapy treatment, adding another layer of cost, the researchers explained, citing a 2019 Health Economics study.

Another analysis, published in 2020, found that hospital prices for the top 37 infused cancer drugs averaged 86% more per unit than the price charged by physician offices. Hospital outpatient departments charged even more, on average, for drugs — 128% more for nivolumab and 428% more for fluorouracil, for instance.

In their 2024 analysis, Dr. Erfani and colleagues also found that increased hospital market concentration was associated with worse quality of care, across all assessed patient satisfaction measures, and may result in worse access to care as well.

Overall, these consolidation “trends have important implications for cancer care cost, quality, and access,” the authors concluded.
 

Navigating the Consolidation Trend

In the face of mounting pressure to join hospitals, community oncology practices have typically relied on horizontal mergers to maintain their independence. An increasing number of practices, however, are now turning to another strategy: Management services organizations.

According to some oncologists, a core benefit of joining a management services organization is their community practices can maintain autonomy, hold on to referrals, and benefit from access to a wider network of peers and recently approved treatments such as chimeric antigen receptor T-cell therapies.

In these arrangements, the management company also provides business assistance to practices, including help with billing and collection, payer negotiations, supply chain issues, and credentialing, as well as recruiting, hiring, and marketing.

These management organizations, which include American Oncology Network, Integrated Oncology Network, OneOncology, and Verdi Oncology, are, however, backed by private equity. According to a 2022 report, private equity–backed management organizations have ramped up arrangements with community oncology practices over the past few years — a trend that has concerned some experts.

The authors of a recent analysis in JAMA Internal Medicine explained that, although private equity involvement in physician practices may enable operational efficiencies, “critics point to potential conflicts of interest” and highlight concerns that patients “may face additional barriers to both accessibility and affordability of care.”

The difference, according to some oncologists, is their practices are not owned by the management services organization; instead, the practices enter contracts that outline the boundaries of the relationship and stipulate fees to the management organizations.

In 2020, Dr. Chasky’s practice, Alliance Cancer Specialists, joined The US Oncology Network, a management services organization wholly owned by McKesson. The organization provides the practice with capital and other resources, as well as access to the Sarah Cannon Research Institute, so patients can participate in clinical trials.

“We totally function as an independent practice,” said Dr. Chasky. “We make our own management decisions,” he said. For instance, if Alliance wants to hire a new clinician, US Oncology helps with the recruitment. “But at the end of the day, it’s our practice,” he said.

Davey Daniel, MD — whose community practice joined the management services organization OneOncology — has seen the benefits of being part of a larger network. For instance, bispecific therapies for leukemias, lymphomas, and multiple myeloma are typically administered at academic centers because of the risk for cytokine release syndrome.

However, physician leaders in the OneOncology network “came up with a playbook on how to do it safely” in the community setting, said Dr. Daniel. “It meant that we were adopting FDA newly approved therapies in a very short course.”

Being able to draw from a wider pool of expertise has had other advantages. Dr. Daniel can lean on pathologists and research scientists in the network for advice on targeted therapy use. “We’re actually bringing precision medicine expertise to the community,” Dr. Daniel said.

Dr. Chasky and Dr. Eagle, whose practice is also part of OneOncology, said that continuing to work in the community setting has allowed them greater flexibility.

Dr. Eagle explained that New York Cancer & Blood Specialists tries to offer patients an appointment within 2 days of a referral, and it allows walk-in visits.

Dr. Chasky leans into the flexibility by having staff stay late, when needed, to ensure that all patients are seen. “We’re there for our patients at all hours,” Dr. Chasky said, adding that often “you don’t have that flexibility when you work for a big hospital system.”

The bottom line is community oncology can still thrive, said Nick Ferreyros, managing director of COA, “as long as we have a healthy competitive ecosystem where [we] are valued and seen as an important part of our cancer care system.”

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

When he completed his fellowship at Fox Chase Cancer Center in Philadelphia, Moshe Chasky, MD, joined a small five-person practice that rented space from the city’s Jefferson Hospital in Philadelphia. The arrangement seemed to work well for the hospital and the small practice, which remained independent.

Within 10 years, the hospital sought to buy the practice, Alliance Cancer Specialists.

But the oncologists at Alliance did not want to join Jefferson.

The hospital eventually entered into an exclusive agreement with its own medical group to provide inpatient oncology/hematology services at three Jefferson Health–Northeast hospitals and stripped Dr. Chasky and his colleagues of their privileges at those facilities, Medscape Medical News reported last year.

The Alliance story is a familiar one for independent community oncology practices, said Jeff Patton, MD, CEO of OneOncology, a management services organization.

A 2020 report from the Community Oncology Alliance (COA), for instance, tracked mergers, acquisitions, and closures in the community oncology setting and found the number of practices acquired by hospitals, known as vertical integration, nearly tripled from 2010 to 2020.

“Some hospitals are pretty predatory in their approach,” Dr. Patton said. If hospitals have their own oncology program, “they’ll employ the referring doctors and then discourage them or prevent them from referring patients to our independent practices that are not owned by the hospital.”

Still, in the face of growing pressure to join hospitals, some community oncology practices are finding ways to survive and maintain their independence.
 

A Growing Trend

The latest data continue to show a clear trend: Consolidation in oncology is on the rise.

A 2024 study revealed that the pace of consolidation seems to be increasing.

The analysis found that, between 2015 and 2022, the number of medical oncologists increased by 14% and the number of medical oncologists per practice increased by 40%, while the number of practices decreased by 18%.

While about 44% of practices remain independent, the percentage of medical oncologists working in practices with more than 25 clinicians has increased from 34% in 2015 to 44% in 2022. By 2022, the largest 102 practices in the United States employed more than 40% of all medical oncologists.

“The rate of consolidation seems to be rapid,” study coauthor Parsa Erfani, MD, an internal medicine resident at Brigham & Women’s Hospital, Boston, explained.

Consolidation appears to breed more consolidation. The researchers found, for instance, that markets with greater hospital consolidation and more hospital beds per capita were more likely to undergo consolidation in oncology.

Consolidation may be higher in these markets “because hospitals or health systems are buying up oncology practices or conversely because oncology practices are merging to compete more effectively with larger hospitals in the area,” Dr. Erfani told this news organization.

Mergers among independent practices, known as horizontal integration, have also been on the rise, according to the 2020 COA report. These mergers can help counter pressures from hospitals seeking to acquire community practices as well as prevent practices and their clinics from closing.

Although Dr. Erfani’s research wasn’t designed to determine the factors behind consolidation, he and his colleagues point to the Affordable Care Act (ACA) and the federal 340B Drug Pricing Program as potential drivers of this trend.

The ACA encouraged consolidation as a way to improve efficiency and created the need for ever-larger information systems to collect and report quality data. But these data collection and reporting requirements have become increasingly difficult for smaller practices to take on.

The 340B Program, however, may be a bigger contributing factor to consolidation. Created in 1992, the 340B Program allows qualifying hospitals and clinics that treat low-income and uninsured patients to buy outpatient prescription drugs at a 25%-50% discount.

Hospitals seeking to capitalize on the margins possible under the 340B Program will “buy all the referring physicians in a market so that the medical oncology group is left with little choice but to sell to the hospital,” said Dr. Patton.

“Those 340B dollars are worth a lot to hospitals,” said David A. Eagle, MD, a hematologist/oncologist with New York Cancer & Blood Specialists and past president of COA. The program “creates an appetite for nonprofit hospitals to want to grow their medical oncology programs,” he told this news organization.

Declining Medicare reimbursement has also hit independent practices hard.

Over the past 15 years, compared with inflation, physicians have gotten “a pay rate decrease from Medicare,” said Dr. Patton. Payers have followed that lead and tried to cut pay for clinicians, especially those who do not have market share, he said. Paying them less is “disingenuous knowing that our costs of providing care are going up,” he said.
 

Less Access, Higher Costs, Worse Care?

Many studies have demonstrated that, when hospitals become behemoths in a given market, healthcare costs go up.

“There are robust data showing that consolidation increases healthcare costs by reducing competition, including in oncology,” wrote Dr. Erfani and colleagues.

Oncology practices that are owned by hospitals bill facility fees for outpatient chemotherapy treatment, adding another layer of cost, the researchers explained, citing a 2019 Health Economics study.

Another analysis, published in 2020, found that hospital prices for the top 37 infused cancer drugs averaged 86% more per unit than the price charged by physician offices. Hospital outpatient departments charged even more, on average, for drugs — 128% more for nivolumab and 428% more for fluorouracil, for instance.

In their 2024 analysis, Dr. Erfani and colleagues also found that increased hospital market concentration was associated with worse quality of care, across all assessed patient satisfaction measures, and may result in worse access to care as well.

Overall, these consolidation “trends have important implications for cancer care cost, quality, and access,” the authors concluded.
 

Navigating the Consolidation Trend

In the face of mounting pressure to join hospitals, community oncology practices have typically relied on horizontal mergers to maintain their independence. An increasing number of practices, however, are now turning to another strategy: Management services organizations.

According to some oncologists, a core benefit of joining a management services organization is their community practices can maintain autonomy, hold on to referrals, and benefit from access to a wider network of peers and recently approved treatments such as chimeric antigen receptor T-cell therapies.

In these arrangements, the management company also provides business assistance to practices, including help with billing and collection, payer negotiations, supply chain issues, and credentialing, as well as recruiting, hiring, and marketing.

These management organizations, which include American Oncology Network, Integrated Oncology Network, OneOncology, and Verdi Oncology, are, however, backed by private equity. According to a 2022 report, private equity–backed management organizations have ramped up arrangements with community oncology practices over the past few years — a trend that has concerned some experts.

The authors of a recent analysis in JAMA Internal Medicine explained that, although private equity involvement in physician practices may enable operational efficiencies, “critics point to potential conflicts of interest” and highlight concerns that patients “may face additional barriers to both accessibility and affordability of care.”

The difference, according to some oncologists, is their practices are not owned by the management services organization; instead, the practices enter contracts that outline the boundaries of the relationship and stipulate fees to the management organizations.

In 2020, Dr. Chasky’s practice, Alliance Cancer Specialists, joined The US Oncology Network, a management services organization wholly owned by McKesson. The organization provides the practice with capital and other resources, as well as access to the Sarah Cannon Research Institute, so patients can participate in clinical trials.

“We totally function as an independent practice,” said Dr. Chasky. “We make our own management decisions,” he said. For instance, if Alliance wants to hire a new clinician, US Oncology helps with the recruitment. “But at the end of the day, it’s our practice,” he said.

Davey Daniel, MD — whose community practice joined the management services organization OneOncology — has seen the benefits of being part of a larger network. For instance, bispecific therapies for leukemias, lymphomas, and multiple myeloma are typically administered at academic centers because of the risk for cytokine release syndrome.

However, physician leaders in the OneOncology network “came up with a playbook on how to do it safely” in the community setting, said Dr. Daniel. “It meant that we were adopting FDA newly approved therapies in a very short course.”

Being able to draw from a wider pool of expertise has had other advantages. Dr. Daniel can lean on pathologists and research scientists in the network for advice on targeted therapy use. “We’re actually bringing precision medicine expertise to the community,” Dr. Daniel said.

Dr. Chasky and Dr. Eagle, whose practice is also part of OneOncology, said that continuing to work in the community setting has allowed them greater flexibility.

Dr. Eagle explained that New York Cancer & Blood Specialists tries to offer patients an appointment within 2 days of a referral, and it allows walk-in visits.

Dr. Chasky leans into the flexibility by having staff stay late, when needed, to ensure that all patients are seen. “We’re there for our patients at all hours,” Dr. Chasky said, adding that often “you don’t have that flexibility when you work for a big hospital system.”

The bottom line is community oncology can still thrive, said Nick Ferreyros, managing director of COA, “as long as we have a healthy competitive ecosystem where [we] are valued and seen as an important part of our cancer care system.”

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

When he completed his fellowship at Fox Chase Cancer Center in Philadelphia, Moshe Chasky, MD, joined a small five-person practice that rented space from the city’s Jefferson Hospital in Philadelphia. The arrangement seemed to work well for the hospital and the small practice, which remained independent.

Within 10 years, the hospital sought to buy the practice, Alliance Cancer Specialists.

But the oncologists at Alliance did not want to join Jefferson.

The hospital eventually entered into an exclusive agreement with its own medical group to provide inpatient oncology/hematology services at three Jefferson Health–Northeast hospitals and stripped Dr. Chasky and his colleagues of their privileges at those facilities, Medscape Medical News reported last year.

The Alliance story is a familiar one for independent community oncology practices, said Jeff Patton, MD, CEO of OneOncology, a management services organization.

A 2020 report from the Community Oncology Alliance (COA), for instance, tracked mergers, acquisitions, and closures in the community oncology setting and found the number of practices acquired by hospitals, known as vertical integration, nearly tripled from 2010 to 2020.

“Some hospitals are pretty predatory in their approach,” Dr. Patton said. If hospitals have their own oncology program, “they’ll employ the referring doctors and then discourage them or prevent them from referring patients to our independent practices that are not owned by the hospital.”

Still, in the face of growing pressure to join hospitals, some community oncology practices are finding ways to survive and maintain their independence.
 

A Growing Trend

The latest data continue to show a clear trend: Consolidation in oncology is on the rise.

A 2024 study revealed that the pace of consolidation seems to be increasing.

The analysis found that, between 2015 and 2022, the number of medical oncologists increased by 14% and the number of medical oncologists per practice increased by 40%, while the number of practices decreased by 18%.

While about 44% of practices remain independent, the percentage of medical oncologists working in practices with more than 25 clinicians has increased from 34% in 2015 to 44% in 2022. By 2022, the largest 102 practices in the United States employed more than 40% of all medical oncologists.

“The rate of consolidation seems to be rapid,” study coauthor Parsa Erfani, MD, an internal medicine resident at Brigham & Women’s Hospital, Boston, explained.

Consolidation appears to breed more consolidation. The researchers found, for instance, that markets with greater hospital consolidation and more hospital beds per capita were more likely to undergo consolidation in oncology.

Consolidation may be higher in these markets “because hospitals or health systems are buying up oncology practices or conversely because oncology practices are merging to compete more effectively with larger hospitals in the area,” Dr. Erfani told this news organization.

Mergers among independent practices, known as horizontal integration, have also been on the rise, according to the 2020 COA report. These mergers can help counter pressures from hospitals seeking to acquire community practices as well as prevent practices and their clinics from closing.

Although Dr. Erfani’s research wasn’t designed to determine the factors behind consolidation, he and his colleagues point to the Affordable Care Act (ACA) and the federal 340B Drug Pricing Program as potential drivers of this trend.

The ACA encouraged consolidation as a way to improve efficiency and created the need for ever-larger information systems to collect and report quality data. But these data collection and reporting requirements have become increasingly difficult for smaller practices to take on.

The 340B Program, however, may be a bigger contributing factor to consolidation. Created in 1992, the 340B Program allows qualifying hospitals and clinics that treat low-income and uninsured patients to buy outpatient prescription drugs at a 25%-50% discount.

Hospitals seeking to capitalize on the margins possible under the 340B Program will “buy all the referring physicians in a market so that the medical oncology group is left with little choice but to sell to the hospital,” said Dr. Patton.

“Those 340B dollars are worth a lot to hospitals,” said David A. Eagle, MD, a hematologist/oncologist with New York Cancer & Blood Specialists and past president of COA. The program “creates an appetite for nonprofit hospitals to want to grow their medical oncology programs,” he told this news organization.

Declining Medicare reimbursement has also hit independent practices hard.

Over the past 15 years, compared with inflation, physicians have gotten “a pay rate decrease from Medicare,” said Dr. Patton. Payers have followed that lead and tried to cut pay for clinicians, especially those who do not have market share, he said. Paying them less is “disingenuous knowing that our costs of providing care are going up,” he said.
 

Less Access, Higher Costs, Worse Care?

Many studies have demonstrated that, when hospitals become behemoths in a given market, healthcare costs go up.

“There are robust data showing that consolidation increases healthcare costs by reducing competition, including in oncology,” wrote Dr. Erfani and colleagues.

Oncology practices that are owned by hospitals bill facility fees for outpatient chemotherapy treatment, adding another layer of cost, the researchers explained, citing a 2019 Health Economics study.

Another analysis, published in 2020, found that hospital prices for the top 37 infused cancer drugs averaged 86% more per unit than the price charged by physician offices. Hospital outpatient departments charged even more, on average, for drugs — 128% more for nivolumab and 428% more for fluorouracil, for instance.

In their 2024 analysis, Dr. Erfani and colleagues also found that increased hospital market concentration was associated with worse quality of care, across all assessed patient satisfaction measures, and may result in worse access to care as well.

Overall, these consolidation “trends have important implications for cancer care cost, quality, and access,” the authors concluded.
 

Navigating the Consolidation Trend

In the face of mounting pressure to join hospitals, community oncology practices have typically relied on horizontal mergers to maintain their independence. An increasing number of practices, however, are now turning to another strategy: Management services organizations.

According to some oncologists, a core benefit of joining a management services organization is their community practices can maintain autonomy, hold on to referrals, and benefit from access to a wider network of peers and recently approved treatments such as chimeric antigen receptor T-cell therapies.

In these arrangements, the management company also provides business assistance to practices, including help with billing and collection, payer negotiations, supply chain issues, and credentialing, as well as recruiting, hiring, and marketing.

These management organizations, which include American Oncology Network, Integrated Oncology Network, OneOncology, and Verdi Oncology, are, however, backed by private equity. According to a 2022 report, private equity–backed management organizations have ramped up arrangements with community oncology practices over the past few years — a trend that has concerned some experts.

The authors of a recent analysis in JAMA Internal Medicine explained that, although private equity involvement in physician practices may enable operational efficiencies, “critics point to potential conflicts of interest” and highlight concerns that patients “may face additional barriers to both accessibility and affordability of care.”

The difference, according to some oncologists, is their practices are not owned by the management services organization; instead, the practices enter contracts that outline the boundaries of the relationship and stipulate fees to the management organizations.

In 2020, Dr. Chasky’s practice, Alliance Cancer Specialists, joined The US Oncology Network, a management services organization wholly owned by McKesson. The organization provides the practice with capital and other resources, as well as access to the Sarah Cannon Research Institute, so patients can participate in clinical trials.

“We totally function as an independent practice,” said Dr. Chasky. “We make our own management decisions,” he said. For instance, if Alliance wants to hire a new clinician, US Oncology helps with the recruitment. “But at the end of the day, it’s our practice,” he said.

Davey Daniel, MD — whose community practice joined the management services organization OneOncology — has seen the benefits of being part of a larger network. For instance, bispecific therapies for leukemias, lymphomas, and multiple myeloma are typically administered at academic centers because of the risk for cytokine release syndrome.

However, physician leaders in the OneOncology network “came up with a playbook on how to do it safely” in the community setting, said Dr. Daniel. “It meant that we were adopting FDA newly approved therapies in a very short course.”

Being able to draw from a wider pool of expertise has had other advantages. Dr. Daniel can lean on pathologists and research scientists in the network for advice on targeted therapy use. “We’re actually bringing precision medicine expertise to the community,” Dr. Daniel said.

Dr. Chasky and Dr. Eagle, whose practice is also part of OneOncology, said that continuing to work in the community setting has allowed them greater flexibility.

Dr. Eagle explained that New York Cancer & Blood Specialists tries to offer patients an appointment within 2 days of a referral, and it allows walk-in visits.

Dr. Chasky leans into the flexibility by having staff stay late, when needed, to ensure that all patients are seen. “We’re there for our patients at all hours,” Dr. Chasky said, adding that often “you don’t have that flexibility when you work for a big hospital system.”

The bottom line is community oncology can still thrive, said Nick Ferreyros, managing director of COA, “as long as we have a healthy competitive ecosystem where [we] are valued and seen as an important part of our cancer care system.”

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

Nearly one in three physicians endorsing drugs and devices on the social media platform X did not disclose that they received payments from the manufacturers, according to a new study published in JAMA.

Lead author Aaron Mitchell, MD, MPH, a medical oncologist at Memorial Sloan Kettering Cancer Center in New York City, told this news organization that he and his colleagues undertook the study in part to see whether physicians were adhering to professional and industry guidelines regarding marketing communications.

The team reviewed posts by physicians on X during 2022, looking for key words that might indicate that the posts were intended as endorsements of a product. The researchers then delved into the Centers for Medicare and Medicaid Services Open Payments database to see how many of those identified as having endorsed a product were paid by the manufacturers.

What Dr. Mitchell found concerned him, he said.

Overall, the researchers identified 28 physician endorsers who received a total of $1.4 million from sponsors in 2022. Among these, 26 physicians (93%) received payments from the product’s manufacturer, totaling $713,976, and 24 physicians (86%) accepted payments related to the endorsed drug or device, totaling $492,098.

While most did disclose that the posts were sponsored — by adding the word “sponsored” or using #sponsored — nine physicians did not.

Although 28 physician endorsers represent a “small fraction” of the overall number of physicians who use X, each endorsement was ultimately posted dozens, if not hundreds of times, said Dr. Mitchell. In fact, he said he saw the same particular endorsement post every time he opened his X app for months.

Overall, Dr. Mitchell noted that it’s less about the fact that the endorsements are occurring on social media and more that there are these paid endorsements taking place at all.

Among the physician specialties promoting a product, urologists and oncologists dominated. Almost one third were urologists, and 57% were oncologists — six medical oncologists, six radiation oncologists, and four gynecologic oncologists. Of the remaining three physicians, two were internists and one was a pulmonary and critical care medicine specialist.

The authors tracked posts from physicians and industry accounts. Many of the posts on industry accounts were physician testimonials, usually videos. Almost half — 8 of 17 — of those testimonials did not disclose that the doctor was being paid by the manufacturer. In another case, a physician did not disclose that they were paid to endorse a white paper.

Fifteen promotional posts were for a Boston Scientific product, followed by six for GlaxoSmithKline, two for Eisai, two for Exelixis, and one each for AstraZeneca, Novartis, and Pfizer.

In general, Dr. Mitchell said, industry guidelines suggest that manufacturer-paid speakers or consultants should have well-regarded expertise in the area they are being asked to weigh in on, but most physician endorsers in the study were not key opinion leaders or experts.

The authors examined the paid endorsers’ H-index — a measure of academic productivity provided by Scopus. Overall, 19 of the 28 physicians had an H-index below 20, which is considered less accomplished, and 14 had no published research related to the endorsed product.

Ten received payments from manufacturers for research purposes, and only one received research payments related to the endorsed product ($224,577).

“Physicians’ participation in industry marketing raises questions regarding professionalism and their responsibilities as patient advocates,” the JAMA authors wrote.

The study was supported by grants from the National Cancer Institute. Dr. Mitchell reported no relevant financial relationships. Coauthors Samer Al Hadidi, MD, reported receiving personal fees from Pfizer, Sanofi, and Janssen during the conduct of the study, and Timothy S. Anderson, MD, reported receiving grants from the National Institute on Aging, the American Heart Association, and the American College of Cardiology, and receiving consulting fees from the American Medical Student Association. Dr. Anderson is also an associate editor of JAMA Internal Medicine.

A version of this article appeared on Medscape.com.

Nearly one in three physicians endorsing drugs and devices on the social media platform X did not disclose that they received payments from the manufacturers, according to a new study published in JAMA.

Lead author Aaron Mitchell, MD, MPH, a medical oncologist at Memorial Sloan Kettering Cancer Center in New York City, told this news organization that he and his colleagues undertook the study in part to see whether physicians were adhering to professional and industry guidelines regarding marketing communications.

The team reviewed posts by physicians on X during 2022, looking for key words that might indicate that the posts were intended as endorsements of a product. The researchers then delved into the Centers for Medicare and Medicaid Services Open Payments database to see how many of those identified as having endorsed a product were paid by the manufacturers.

What Dr. Mitchell found concerned him, he said.

Overall, the researchers identified 28 physician endorsers who received a total of $1.4 million from sponsors in 2022. Among these, 26 physicians (93%) received payments from the product’s manufacturer, totaling $713,976, and 24 physicians (86%) accepted payments related to the endorsed drug or device, totaling $492,098.

While most did disclose that the posts were sponsored — by adding the word “sponsored” or using #sponsored — nine physicians did not.

Although 28 physician endorsers represent a “small fraction” of the overall number of physicians who use X, each endorsement was ultimately posted dozens, if not hundreds of times, said Dr. Mitchell. In fact, he said he saw the same particular endorsement post every time he opened his X app for months.

Overall, Dr. Mitchell noted that it’s less about the fact that the endorsements are occurring on social media and more that there are these paid endorsements taking place at all.

Among the physician specialties promoting a product, urologists and oncologists dominated. Almost one third were urologists, and 57% were oncologists — six medical oncologists, six radiation oncologists, and four gynecologic oncologists. Of the remaining three physicians, two were internists and one was a pulmonary and critical care medicine specialist.

The authors tracked posts from physicians and industry accounts. Many of the posts on industry accounts were physician testimonials, usually videos. Almost half — 8 of 17 — of those testimonials did not disclose that the doctor was being paid by the manufacturer. In another case, a physician did not disclose that they were paid to endorse a white paper.

Fifteen promotional posts were for a Boston Scientific product, followed by six for GlaxoSmithKline, two for Eisai, two for Exelixis, and one each for AstraZeneca, Novartis, and Pfizer.

In general, Dr. Mitchell said, industry guidelines suggest that manufacturer-paid speakers or consultants should have well-regarded expertise in the area they are being asked to weigh in on, but most physician endorsers in the study were not key opinion leaders or experts.

The authors examined the paid endorsers’ H-index — a measure of academic productivity provided by Scopus. Overall, 19 of the 28 physicians had an H-index below 20, which is considered less accomplished, and 14 had no published research related to the endorsed product.

Ten received payments from manufacturers for research purposes, and only one received research payments related to the endorsed product ($224,577).

“Physicians’ participation in industry marketing raises questions regarding professionalism and their responsibilities as patient advocates,” the JAMA authors wrote.

The study was supported by grants from the National Cancer Institute. Dr. Mitchell reported no relevant financial relationships. Coauthors Samer Al Hadidi, MD, reported receiving personal fees from Pfizer, Sanofi, and Janssen during the conduct of the study, and Timothy S. Anderson, MD, reported receiving grants from the National Institute on Aging, the American Heart Association, and the American College of Cardiology, and receiving consulting fees from the American Medical Student Association. Dr. Anderson is also an associate editor of JAMA Internal Medicine.

A version of this article appeared on Medscape.com.

Nearly one in three physicians endorsing drugs and devices on the social media platform X did not disclose that they received payments from the manufacturers, according to a new study published in JAMA.

Lead author Aaron Mitchell, MD, MPH, a medical oncologist at Memorial Sloan Kettering Cancer Center in New York City, told this news organization that he and his colleagues undertook the study in part to see whether physicians were adhering to professional and industry guidelines regarding marketing communications.

The team reviewed posts by physicians on X during 2022, looking for key words that might indicate that the posts were intended as endorsements of a product. The researchers then delved into the Centers for Medicare and Medicaid Services Open Payments database to see how many of those identified as having endorsed a product were paid by the manufacturers.

What Dr. Mitchell found concerned him, he said.

Overall, the researchers identified 28 physician endorsers who received a total of $1.4 million from sponsors in 2022. Among these, 26 physicians (93%) received payments from the product’s manufacturer, totaling $713,976, and 24 physicians (86%) accepted payments related to the endorsed drug or device, totaling $492,098.

While most did disclose that the posts were sponsored — by adding the word “sponsored” or using #sponsored — nine physicians did not.

Although 28 physician endorsers represent a “small fraction” of the overall number of physicians who use X, each endorsement was ultimately posted dozens, if not hundreds of times, said Dr. Mitchell. In fact, he said he saw the same particular endorsement post every time he opened his X app for months.

Overall, Dr. Mitchell noted that it’s less about the fact that the endorsements are occurring on social media and more that there are these paid endorsements taking place at all.

Among the physician specialties promoting a product, urologists and oncologists dominated. Almost one third were urologists, and 57% were oncologists — six medical oncologists, six radiation oncologists, and four gynecologic oncologists. Of the remaining three physicians, two were internists and one was a pulmonary and critical care medicine specialist.

The authors tracked posts from physicians and industry accounts. Many of the posts on industry accounts were physician testimonials, usually videos. Almost half — 8 of 17 — of those testimonials did not disclose that the doctor was being paid by the manufacturer. In another case, a physician did not disclose that they were paid to endorse a white paper.

Fifteen promotional posts were for a Boston Scientific product, followed by six for GlaxoSmithKline, two for Eisai, two for Exelixis, and one each for AstraZeneca, Novartis, and Pfizer.

In general, Dr. Mitchell said, industry guidelines suggest that manufacturer-paid speakers or consultants should have well-regarded expertise in the area they are being asked to weigh in on, but most physician endorsers in the study were not key opinion leaders or experts.

The authors examined the paid endorsers’ H-index — a measure of academic productivity provided by Scopus. Overall, 19 of the 28 physicians had an H-index below 20, which is considered less accomplished, and 14 had no published research related to the endorsed product.

Ten received payments from manufacturers for research purposes, and only one received research payments related to the endorsed product ($224,577).

“Physicians’ participation in industry marketing raises questions regarding professionalism and their responsibilities as patient advocates,” the JAMA authors wrote.

The study was supported by grants from the National Cancer Institute. Dr. Mitchell reported no relevant financial relationships. Coauthors Samer Al Hadidi, MD, reported receiving personal fees from Pfizer, Sanofi, and Janssen during the conduct of the study, and Timothy S. Anderson, MD, reported receiving grants from the National Institute on Aging, the American Heart Association, and the American College of Cardiology, and receiving consulting fees from the American Medical Student Association. Dr. Anderson is also an associate editor of JAMA Internal Medicine.

A version of this article appeared on Medscape.com.

CHICAGO — Carlos, a 21-year-old, lay in a hospital bed, barely clinging to life. Following a stem cell transplant for leukemia, Carlos had developed a life-threatening case of graft-vs-host disease.

But Carlos’ mother had faith.

“I have hope things will get better,” she said, via interpreter, to Richard Leiter, MD, a palliative care doctor in training at that time.

“I hope they will,” Dr. Leiter told her.

“I should have stopped there,” said Dr. Leiter, recounting an early-career lesson on hope during the ASCO Voices session at the American Society of Clinical Oncology annual meeting. “But in my eagerness to show my attending and myself that I could handle this conversation, I kept going, mistakenly.”

“But none of us think they will,” Dr. Leiter continued.

Carlos’ mother looked Dr. Leiter in the eye. “You want him to die,” she said.

“I knew, even then, that she was right,” recalled Dr. Leiter, now a palliative care physician at Dana-Farber Cancer Institute and Brigham and Women’s Hospital and an assistant professor of medicine at Harvard Medical School, Boston.

Although there was nothing he could do to save Carlos, Dr. Leiter also couldn’t sit with the extreme suffering. “The pain was too great,” Dr. Leiter said. “I needed her to adopt our narrative that we had done everything we could to help him live, and now, we would do everything we could to help his death be a comfortable one.”

But looking back, Dr. Leiter realized, “How could we have asked her to accept what was fundamentally unacceptable, to comprehend the incomprehensible?”
 

The Importance of Hope

Hope is not only a feature of human cognition but also a measurable and malleable construct that can affect life outcomes, Alan B. Astrow, MD, said during an ASCO symposium on “The Art and Science of Hope.”

“How we think about hope directly influences patient care,” said Dr. Astrow, chief of hematology and medical oncology at NewYork-Presbyterian Brooklyn Methodist Hospital and a professor of clinical medicine at Weill Cornell Medicine in New York City.

Hope, whatever it turns out to be neurobiologically, is “very much a gift” that underlies human existence, he said.

Physicians have the capacity to restore or shatter a patient’s hopes, and those who come to understand the importance of hope will wish to extend the gift to others, Dr. Astrow said.

Asking patients about their hopes is the “golden question,” Steven Z. Pantilat, MD, said at the symposium. “When you think about the future, what do you hope for?”

Often, the answers reveal not only “things beyond a cure that matter tremendously to the patient but things that we can help with,” said Dr. Pantilat, professor and chief of the Division of Palliative Medicine at the University of California San Francisco.

Dr. Pantilat recalled a patient with advanced pancreatic cancer who wished to see her daughter’s wedding in 10 months. He knew that was unlikely, but the discussion led to another solution.

Her daughter moved the wedding to the ICU.

Hope can persist and uplift even in the darkest of times, and “as clinicians, we need to be in the true hope business,” he said.

While some patients may wish for a cure, others may want more time with family or comfort in the face of suffering. People can “hope for all the things that can still be, despite the fact that there’s a lot of things that can’t,” he said.

However, fear that a patient will hope for a cure, and that the difficult discussions to follow might destroy hope or lead to false hope, sometimes means physicians won’t begin the conversation.

“We want to be honest with our patients — compassionate and kind, but honest — when we talk about their hopes,” Dr. Pantilat explained. Sometimes that means he needs to tell patients, “I wish that could happen. I wish I had a treatment that could make your cancer go away, but unfortunately, I don’t. So let’s think about what else we can do to help you.”

Having these difficult discussions matters. The evidence, although limited, indicates that feeling hopeful can improve patients’ well-being and may even boost their cancer outcomes.

One recent study found, for instance, that patients who reported feeling more hopeful also had lower levels of depression and anxiety. Early research also suggests that greater levels of hope may have a hand in reducing inflammation in patients with ovarian cancer and could even improve survival in some patients with advanced cancer.

For Dr. Leiter, while these lessons came early in his career as a palliative care physician, they persist and influence his practice today.

“I know that I could not have prevented Carlos’ death. None of us could have, and none of us could have protected his mother from the unimaginable grief that will stay with her for the rest of her life,” he said. “But I could have made things just a little bit less difficult for her.

“I could have acted as her guide rather than her cross-examiner,” he continued, explaining that he now sees hope as “a generous collaborator” that can coexist with rising creatinine levels, failing livers, and fears about intubation.

“As clinicians, we can always find space to hope with our patients and their families,” he said. “So now, years later when I sit with a terrified and grieving family and they tell me they hope their loved one gets better, I remember Carlos’ mother’s eyes piercing mine ... and I know how to respond: ‘I hope so, too.’ And I do.”
 

A version of this article appeared on Medscape.com.

CHICAGO — Carlos, a 21-year-old, lay in a hospital bed, barely clinging to life. Following a stem cell transplant for leukemia, Carlos had developed a life-threatening case of graft-vs-host disease.

But Carlos’ mother had faith.

“I have hope things will get better,” she said, via interpreter, to Richard Leiter, MD, a palliative care doctor in training at that time.

“I hope they will,” Dr. Leiter told her.

“I should have stopped there,” said Dr. Leiter, recounting an early-career lesson on hope during the ASCO Voices session at the American Society of Clinical Oncology annual meeting. “But in my eagerness to show my attending and myself that I could handle this conversation, I kept going, mistakenly.”

“But none of us think they will,” Dr. Leiter continued.

Carlos’ mother looked Dr. Leiter in the eye. “You want him to die,” she said.

“I knew, even then, that she was right,” recalled Dr. Leiter, now a palliative care physician at Dana-Farber Cancer Institute and Brigham and Women’s Hospital and an assistant professor of medicine at Harvard Medical School, Boston.

Although there was nothing he could do to save Carlos, Dr. Leiter also couldn’t sit with the extreme suffering. “The pain was too great,” Dr. Leiter said. “I needed her to adopt our narrative that we had done everything we could to help him live, and now, we would do everything we could to help his death be a comfortable one.”

But looking back, Dr. Leiter realized, “How could we have asked her to accept what was fundamentally unacceptable, to comprehend the incomprehensible?”
 

The Importance of Hope

Hope is not only a feature of human cognition but also a measurable and malleable construct that can affect life outcomes, Alan B. Astrow, MD, said during an ASCO symposium on “The Art and Science of Hope.”

“How we think about hope directly influences patient care,” said Dr. Astrow, chief of hematology and medical oncology at NewYork-Presbyterian Brooklyn Methodist Hospital and a professor of clinical medicine at Weill Cornell Medicine in New York City.

Hope, whatever it turns out to be neurobiologically, is “very much a gift” that underlies human existence, he said.

Physicians have the capacity to restore or shatter a patient’s hopes, and those who come to understand the importance of hope will wish to extend the gift to others, Dr. Astrow said.

Asking patients about their hopes is the “golden question,” Steven Z. Pantilat, MD, said at the symposium. “When you think about the future, what do you hope for?”

Often, the answers reveal not only “things beyond a cure that matter tremendously to the patient but things that we can help with,” said Dr. Pantilat, professor and chief of the Division of Palliative Medicine at the University of California San Francisco.

Dr. Pantilat recalled a patient with advanced pancreatic cancer who wished to see her daughter’s wedding in 10 months. He knew that was unlikely, but the discussion led to another solution.

Her daughter moved the wedding to the ICU.

Hope can persist and uplift even in the darkest of times, and “as clinicians, we need to be in the true hope business,” he said.

While some patients may wish for a cure, others may want more time with family or comfort in the face of suffering. People can “hope for all the things that can still be, despite the fact that there’s a lot of things that can’t,” he said.

However, fear that a patient will hope for a cure, and that the difficult discussions to follow might destroy hope or lead to false hope, sometimes means physicians won’t begin the conversation.

“We want to be honest with our patients — compassionate and kind, but honest — when we talk about their hopes,” Dr. Pantilat explained. Sometimes that means he needs to tell patients, “I wish that could happen. I wish I had a treatment that could make your cancer go away, but unfortunately, I don’t. So let’s think about what else we can do to help you.”

Having these difficult discussions matters. The evidence, although limited, indicates that feeling hopeful can improve patients’ well-being and may even boost their cancer outcomes.

One recent study found, for instance, that patients who reported feeling more hopeful also had lower levels of depression and anxiety. Early research also suggests that greater levels of hope may have a hand in reducing inflammation in patients with ovarian cancer and could even improve survival in some patients with advanced cancer.

For Dr. Leiter, while these lessons came early in his career as a palliative care physician, they persist and influence his practice today.

“I know that I could not have prevented Carlos’ death. None of us could have, and none of us could have protected his mother from the unimaginable grief that will stay with her for the rest of her life,” he said. “But I could have made things just a little bit less difficult for her.

“I could have acted as her guide rather than her cross-examiner,” he continued, explaining that he now sees hope as “a generous collaborator” that can coexist with rising creatinine levels, failing livers, and fears about intubation.

“As clinicians, we can always find space to hope with our patients and their families,” he said. “So now, years later when I sit with a terrified and grieving family and they tell me they hope their loved one gets better, I remember Carlos’ mother’s eyes piercing mine ... and I know how to respond: ‘I hope so, too.’ And I do.”
 

A version of this article appeared on Medscape.com.

CHICAGO — Carlos, a 21-year-old, lay in a hospital bed, barely clinging to life. Following a stem cell transplant for leukemia, Carlos had developed a life-threatening case of graft-vs-host disease.

But Carlos’ mother had faith.

“I have hope things will get better,” she said, via interpreter, to Richard Leiter, MD, a palliative care doctor in training at that time.

“I hope they will,” Dr. Leiter told her.

“I should have stopped there,” said Dr. Leiter, recounting an early-career lesson on hope during the ASCO Voices session at the American Society of Clinical Oncology annual meeting. “But in my eagerness to show my attending and myself that I could handle this conversation, I kept going, mistakenly.”

“But none of us think they will,” Dr. Leiter continued.

Carlos’ mother looked Dr. Leiter in the eye. “You want him to die,” she said.

“I knew, even then, that she was right,” recalled Dr. Leiter, now a palliative care physician at Dana-Farber Cancer Institute and Brigham and Women’s Hospital and an assistant professor of medicine at Harvard Medical School, Boston.

Although there was nothing he could do to save Carlos, Dr. Leiter also couldn’t sit with the extreme suffering. “The pain was too great,” Dr. Leiter said. “I needed her to adopt our narrative that we had done everything we could to help him live, and now, we would do everything we could to help his death be a comfortable one.”

But looking back, Dr. Leiter realized, “How could we have asked her to accept what was fundamentally unacceptable, to comprehend the incomprehensible?”
 

The Importance of Hope

Hope is not only a feature of human cognition but also a measurable and malleable construct that can affect life outcomes, Alan B. Astrow, MD, said during an ASCO symposium on “The Art and Science of Hope.”

“How we think about hope directly influences patient care,” said Dr. Astrow, chief of hematology and medical oncology at NewYork-Presbyterian Brooklyn Methodist Hospital and a professor of clinical medicine at Weill Cornell Medicine in New York City.

Hope, whatever it turns out to be neurobiologically, is “very much a gift” that underlies human existence, he said.

Physicians have the capacity to restore or shatter a patient’s hopes, and those who come to understand the importance of hope will wish to extend the gift to others, Dr. Astrow said.

Asking patients about their hopes is the “golden question,” Steven Z. Pantilat, MD, said at the symposium. “When you think about the future, what do you hope for?”

Often, the answers reveal not only “things beyond a cure that matter tremendously to the patient but things that we can help with,” said Dr. Pantilat, professor and chief of the Division of Palliative Medicine at the University of California San Francisco.

Dr. Pantilat recalled a patient with advanced pancreatic cancer who wished to see her daughter’s wedding in 10 months. He knew that was unlikely, but the discussion led to another solution.

Her daughter moved the wedding to the ICU.

Hope can persist and uplift even in the darkest of times, and “as clinicians, we need to be in the true hope business,” he said.

While some patients may wish for a cure, others may want more time with family or comfort in the face of suffering. People can “hope for all the things that can still be, despite the fact that there’s a lot of things that can’t,” he said.

However, fear that a patient will hope for a cure, and that the difficult discussions to follow might destroy hope or lead to false hope, sometimes means physicians won’t begin the conversation.

“We want to be honest with our patients — compassionate and kind, but honest — when we talk about their hopes,” Dr. Pantilat explained. Sometimes that means he needs to tell patients, “I wish that could happen. I wish I had a treatment that could make your cancer go away, but unfortunately, I don’t. So let’s think about what else we can do to help you.”

Having these difficult discussions matters. The evidence, although limited, indicates that feeling hopeful can improve patients’ well-being and may even boost their cancer outcomes.

One recent study found, for instance, that patients who reported feeling more hopeful also had lower levels of depression and anxiety. Early research also suggests that greater levels of hope may have a hand in reducing inflammation in patients with ovarian cancer and could even improve survival in some patients with advanced cancer.

For Dr. Leiter, while these lessons came early in his career as a palliative care physician, they persist and influence his practice today.

“I know that I could not have prevented Carlos’ death. None of us could have, and none of us could have protected his mother from the unimaginable grief that will stay with her for the rest of her life,” he said. “But I could have made things just a little bit less difficult for her.

“I could have acted as her guide rather than her cross-examiner,” he continued, explaining that he now sees hope as “a generous collaborator” that can coexist with rising creatinine levels, failing livers, and fears about intubation.

“As clinicians, we can always find space to hope with our patients and their families,” he said. “So now, years later when I sit with a terrified and grieving family and they tell me they hope their loved one gets better, I remember Carlos’ mother’s eyes piercing mine ... and I know how to respond: ‘I hope so, too.’ And I do.”
 

A version of this article appeared on Medscape.com.

The results of a large French study comparing the cancer risk in children conceived through assisted reproductive technology (ART) with that of naturally conceived children were published recently in JAMA Network Open. This study is one of the largest to date on this subject: It included 8,526,306 children born in France between 2010 and 2021, of whom 260,236 (3%) were conceived through ART, and followed them up to a median age of 6.7 years.

Motivations for the Study

ART (including artificial insemination, in vitro fertilization [IVF], or intracytoplasmic sperm injection [ICSI] with fresh or frozen embryo transfer) accounts for about 1 in 30 births in France. However, limited and heterogeneous data have suggested an increased risk for certain health disorders, including cancer, among children conceived through ART. Therefore, a large-scale evaluation of cancer risk in these children is important.

No Overall Increase

In all, 9256 children developed cancer, including 292 who were conceived through ART. Thus, this study did not show an increased risk for cancer (of all types combined) in children conceived through ART. Nevertheless, a slight increase in the risk for leukemia was observed in children conceived through IVF or ICSI. The investigators observed approximately one additional case for every 5000 newborns conceived through IVF or ICSI who reached age 10 years.

Epidemiological monitoring should be continued to better evaluate long-term risks and see whether the risk for leukemia is confirmed. If it is, then it will be useful to investigate the mechanisms related to ART techniques or the fertility disorders of parents that could lead to an increased risk for leukemia.

This story was translated from Univadis France, which is part of the Medscape Professional Network, 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.

The results of a large French study comparing the cancer risk in children conceived through assisted reproductive technology (ART) with that of naturally conceived children were published recently in JAMA Network Open. This study is one of the largest to date on this subject: It included 8,526,306 children born in France between 2010 and 2021, of whom 260,236 (3%) were conceived through ART, and followed them up to a median age of 6.7 years.

Motivations for the Study

ART (including artificial insemination, in vitro fertilization [IVF], or intracytoplasmic sperm injection [ICSI] with fresh or frozen embryo transfer) accounts for about 1 in 30 births in France. However, limited and heterogeneous data have suggested an increased risk for certain health disorders, including cancer, among children conceived through ART. Therefore, a large-scale evaluation of cancer risk in these children is important.

No Overall Increase

In all, 9256 children developed cancer, including 292 who were conceived through ART. Thus, this study did not show an increased risk for cancer (of all types combined) in children conceived through ART. Nevertheless, a slight increase in the risk for leukemia was observed in children conceived through IVF or ICSI. The investigators observed approximately one additional case for every 5000 newborns conceived through IVF or ICSI who reached age 10 years.

Epidemiological monitoring should be continued to better evaluate long-term risks and see whether the risk for leukemia is confirmed. If it is, then it will be useful to investigate the mechanisms related to ART techniques or the fertility disorders of parents that could lead to an increased risk for leukemia.

This story was translated from Univadis France, which is part of the Medscape Professional Network, 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.

The results of a large French study comparing the cancer risk in children conceived through assisted reproductive technology (ART) with that of naturally conceived children were published recently in JAMA Network Open. This study is one of the largest to date on this subject: It included 8,526,306 children born in France between 2010 and 2021, of whom 260,236 (3%) were conceived through ART, and followed them up to a median age of 6.7 years.

Motivations for the Study

ART (including artificial insemination, in vitro fertilization [IVF], or intracytoplasmic sperm injection [ICSI] with fresh or frozen embryo transfer) accounts for about 1 in 30 births in France. However, limited and heterogeneous data have suggested an increased risk for certain health disorders, including cancer, among children conceived through ART. Therefore, a large-scale evaluation of cancer risk in these children is important.

No Overall Increase

In all, 9256 children developed cancer, including 292 who were conceived through ART. Thus, this study did not show an increased risk for cancer (of all types combined) in children conceived through ART. Nevertheless, a slight increase in the risk for leukemia was observed in children conceived through IVF or ICSI. The investigators observed approximately one additional case for every 5000 newborns conceived through IVF or ICSI who reached age 10 years.

Epidemiological monitoring should be continued to better evaluate long-term risks and see whether the risk for leukemia is confirmed. If it is, then it will be useful to investigate the mechanisms related to ART techniques or the fertility disorders of parents that could lead to an increased risk for leukemia.

This story was translated from Univadis France, which is part of the Medscape Professional Network, 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.

In just 4 years, there’s been a significant evolution in the profile of pediatric and young adult patients who’ve taken the chimeric antigen receptor (CAR) T-cell immunotherapy known as tisagenlecleucel (Kymriah) for relapsed/refractory B-cell acute lymphoblastic leukemia (B-ALL), a new industry-funded study finds.

It’s becoming more common for patients with less severe disease to undergo the treatment, often bypassing hematopoietic stem cell transplantation (HSCT), and survival is on the rise.

From 2018 to 2022, the percentage of patients in an international cohort who had disease burden of ≥50% fell from 18% to 4%, researchers reported at the annual meeting of the American Society of Clinical Oncology (ASCO) in Chicago. Median relapse-free survival in patients who didn’t undergo post-infusion HSCT grew from 18 months in 2018 to 27 months in 2020. It was not estimable in 2021.

“This introduction of the therapy is changing the treatment landscape of how we look at refractory B-ALL, where the standard of care previously would be to proceed to transplant. This therapy is actually reducing the use of transplant, which has lots of morbidity and mortality associated with it,” Texas Children’s Cancer Center hematologist-oncologist Rayne H. Rouce, MD, who led the study, said in an interview.

Tisagenlecleucel received Food and Drug Administration approval in 2017, said Nirali N. Shah, MD, MHSc, head of the Pediatric Oncology Branch’s Hematologic Malignancies Section at the National Cancer Institute, in an interview. Dr. Shah is familiar with the study findings but didn’t take part in the research.

Remission rates have been around 60%-70%, Dr. Shah said, although that rate is “likely higher” now because of gains in experience and improvement in disease burden prior to therapy. 

The new findings fill a knowledge gap about real-world outcomes since a lot of the prior data was based on investigational CAR T-cell products, she said.

The noninterventional, prospective, longitudinal study, funded by tisagenlecleucel manufacturer Novartis, tracked 974 patients up to age 25 who received tisagenlecleucel in the United States, Canada, Korea, and Taiwan.

The study found that between 2018 and 2022:

• The percentage of patients who received treatment while in morphological complete remission grew from 34% to 51%.
• The percentages who were in third or greater relapse fell from 14% to 2%.
• The percentages undergoing ≥1 HSCT before tisagenlecleucel infusion fell from 37% to 15%.
• Overall, 34.5% of 911 patients received post-infusion HSCT.

In the big picture, the findings suggest that the therapy can be considered more than “a last resort for patients in a second or greater relapse or who are refractory,” Dr. Rouce said. By offering CAR T-cell therapy to earlier-stage patients, she said, “when they’re less sick, when they have less comorbidities, and when their organs are functioning better, we could potentially save them from having to go on to a transplant.”

Dr. Shah said the findings indicate that “a substantial number of patients are surviving. It’s remarkable actually. Prior to tisagenlecleucel, patients had dismal outcomes from standard chemotherapy.”

She added that the study suggests “providers are getting much more comfortable with getting their patients in the best shape prior to getting CAR T-cell therapy. Outcomes are improving as providers expand the use of CAR T-cell therapy to patients who are less heavily pretreated and have lower disease burden.”

Moving forward, “at some point there will likely be a plateau in terms of how good the outcomes can be.” And there will be discussion of the role of HSCT.

“We’ll figure out some of the nuances about which patients need transplants and which can avoid them. But curative potential is growing. With or without transplant, this is ultimately going to lead to a much higher fraction of patients being cured who previously would not have been cured,” she said. “That’s the bottom line.”

As for adverse effects, Dr. Shah said “disease burden has a pretty direct relationship with side effects and toxicities. If you have more disease, you have more severe side effects.”

Reducing disease burden will reduce side effects, she said. Also, “we’re getting a lot better at managing these toxicities. Eliminating some of the more toxic chemotherapy through earlier use of CAR T-cells in chemotherapy-refractory patients may well help reduce therapy burden and improve long-term survival outcomes, she added.

As for cost, drugs.com reports that the therapy runs to more than $612,000 per infusion. But Dr. Shah said insurers are covering the treatment. She added that there are efforts to expand the indication so CAR T-cell therapy can be used earlier in patients who are chemotherapy-refractory.

Novartis funded the study. Dr. Shah discloses ties with Lentigen, VOR, and CARGO, ImmunoACT, and Sobi. Dr. Rouce reports relationships with Pfizer and Novartis.

In just 4 years, there’s been a significant evolution in the profile of pediatric and young adult patients who’ve taken the chimeric antigen receptor (CAR) T-cell immunotherapy known as tisagenlecleucel (Kymriah) for relapsed/refractory B-cell acute lymphoblastic leukemia (B-ALL), a new industry-funded study finds.

It’s becoming more common for patients with less severe disease to undergo the treatment, often bypassing hematopoietic stem cell transplantation (HSCT), and survival is on the rise.

From 2018 to 2022, the percentage of patients in an international cohort who had disease burden of ≥50% fell from 18% to 4%, researchers reported at the annual meeting of the American Society of Clinical Oncology (ASCO) in Chicago. Median relapse-free survival in patients who didn’t undergo post-infusion HSCT grew from 18 months in 2018 to 27 months in 2020. It was not estimable in 2021.

“This introduction of the therapy is changing the treatment landscape of how we look at refractory B-ALL, where the standard of care previously would be to proceed to transplant. This therapy is actually reducing the use of transplant, which has lots of morbidity and mortality associated with it,” Texas Children’s Cancer Center hematologist-oncologist Rayne H. Rouce, MD, who led the study, said in an interview.

Tisagenlecleucel received Food and Drug Administration approval in 2017, said Nirali N. Shah, MD, MHSc, head of the Pediatric Oncology Branch’s Hematologic Malignancies Section at the National Cancer Institute, in an interview. Dr. Shah is familiar with the study findings but didn’t take part in the research.

Remission rates have been around 60%-70%, Dr. Shah said, although that rate is “likely higher” now because of gains in experience and improvement in disease burden prior to therapy. 

The new findings fill a knowledge gap about real-world outcomes since a lot of the prior data was based on investigational CAR T-cell products, she said.

The noninterventional, prospective, longitudinal study, funded by tisagenlecleucel manufacturer Novartis, tracked 974 patients up to age 25 who received tisagenlecleucel in the United States, Canada, Korea, and Taiwan.

The study found that between 2018 and 2022:

• The percentage of patients who received treatment while in morphological complete remission grew from 34% to 51%.
• The percentages who were in third or greater relapse fell from 14% to 2%.
• The percentages undergoing ≥1 HSCT before tisagenlecleucel infusion fell from 37% to 15%.
• Overall, 34.5% of 911 patients received post-infusion HSCT.

In the big picture, the findings suggest that the therapy can be considered more than “a last resort for patients in a second or greater relapse or who are refractory,” Dr. Rouce said. By offering CAR T-cell therapy to earlier-stage patients, she said, “when they’re less sick, when they have less comorbidities, and when their organs are functioning better, we could potentially save them from having to go on to a transplant.”

Dr. Shah said the findings indicate that “a substantial number of patients are surviving. It’s remarkable actually. Prior to tisagenlecleucel, patients had dismal outcomes from standard chemotherapy.”

She added that the study suggests “providers are getting much more comfortable with getting their patients in the best shape prior to getting CAR T-cell therapy. Outcomes are improving as providers expand the use of CAR T-cell therapy to patients who are less heavily pretreated and have lower disease burden.”

Moving forward, “at some point there will likely be a plateau in terms of how good the outcomes can be.” And there will be discussion of the role of HSCT.

“We’ll figure out some of the nuances about which patients need transplants and which can avoid them. But curative potential is growing. With or without transplant, this is ultimately going to lead to a much higher fraction of patients being cured who previously would not have been cured,” she said. “That’s the bottom line.”

As for adverse effects, Dr. Shah said “disease burden has a pretty direct relationship with side effects and toxicities. If you have more disease, you have more severe side effects.”

Reducing disease burden will reduce side effects, she said. Also, “we’re getting a lot better at managing these toxicities. Eliminating some of the more toxic chemotherapy through earlier use of CAR T-cells in chemotherapy-refractory patients may well help reduce therapy burden and improve long-term survival outcomes, she added.

As for cost, drugs.com reports that the therapy runs to more than $612,000 per infusion. But Dr. Shah said insurers are covering the treatment. She added that there are efforts to expand the indication so CAR T-cell therapy can be used earlier in patients who are chemotherapy-refractory.

Novartis funded the study. Dr. Shah discloses ties with Lentigen, VOR, and CARGO, ImmunoACT, and Sobi. Dr. Rouce reports relationships with Pfizer and Novartis.

In just 4 years, there’s been a significant evolution in the profile of pediatric and young adult patients who’ve taken the chimeric antigen receptor (CAR) T-cell immunotherapy known as tisagenlecleucel (Kymriah) for relapsed/refractory B-cell acute lymphoblastic leukemia (B-ALL), a new industry-funded study finds.

It’s becoming more common for patients with less severe disease to undergo the treatment, often bypassing hematopoietic stem cell transplantation (HSCT), and survival is on the rise.

From 2018 to 2022, the percentage of patients in an international cohort who had disease burden of ≥50% fell from 18% to 4%, researchers reported at the annual meeting of the American Society of Clinical Oncology (ASCO) in Chicago. Median relapse-free survival in patients who didn’t undergo post-infusion HSCT grew from 18 months in 2018 to 27 months in 2020. It was not estimable in 2021.

“This introduction of the therapy is changing the treatment landscape of how we look at refractory B-ALL, where the standard of care previously would be to proceed to transplant. This therapy is actually reducing the use of transplant, which has lots of morbidity and mortality associated with it,” Texas Children’s Cancer Center hematologist-oncologist Rayne H. Rouce, MD, who led the study, said in an interview.

Tisagenlecleucel received Food and Drug Administration approval in 2017, said Nirali N. Shah, MD, MHSc, head of the Pediatric Oncology Branch’s Hematologic Malignancies Section at the National Cancer Institute, in an interview. Dr. Shah is familiar with the study findings but didn’t take part in the research.

Remission rates have been around 60%-70%, Dr. Shah said, although that rate is “likely higher” now because of gains in experience and improvement in disease burden prior to therapy. 

The new findings fill a knowledge gap about real-world outcomes since a lot of the prior data was based on investigational CAR T-cell products, she said.

The noninterventional, prospective, longitudinal study, funded by tisagenlecleucel manufacturer Novartis, tracked 974 patients up to age 25 who received tisagenlecleucel in the United States, Canada, Korea, and Taiwan.

The study found that between 2018 and 2022:

• The percentage of patients who received treatment while in morphological complete remission grew from 34% to 51%.
• The percentages who were in third or greater relapse fell from 14% to 2%.
• The percentages undergoing ≥1 HSCT before tisagenlecleucel infusion fell from 37% to 15%.
• Overall, 34.5% of 911 patients received post-infusion HSCT.

In the big picture, the findings suggest that the therapy can be considered more than “a last resort for patients in a second or greater relapse or who are refractory,” Dr. Rouce said. By offering CAR T-cell therapy to earlier-stage patients, she said, “when they’re less sick, when they have less comorbidities, and when their organs are functioning better, we could potentially save them from having to go on to a transplant.”

Dr. Shah said the findings indicate that “a substantial number of patients are surviving. It’s remarkable actually. Prior to tisagenlecleucel, patients had dismal outcomes from standard chemotherapy.”

She added that the study suggests “providers are getting much more comfortable with getting their patients in the best shape prior to getting CAR T-cell therapy. Outcomes are improving as providers expand the use of CAR T-cell therapy to patients who are less heavily pretreated and have lower disease burden.”

Moving forward, “at some point there will likely be a plateau in terms of how good the outcomes can be.” And there will be discussion of the role of HSCT.

“We’ll figure out some of the nuances about which patients need transplants and which can avoid them. But curative potential is growing. With or without transplant, this is ultimately going to lead to a much higher fraction of patients being cured who previously would not have been cured,” she said. “That’s the bottom line.”

As for adverse effects, Dr. Shah said “disease burden has a pretty direct relationship with side effects and toxicities. If you have more disease, you have more severe side effects.”

Reducing disease burden will reduce side effects, she said. Also, “we’re getting a lot better at managing these toxicities. Eliminating some of the more toxic chemotherapy through earlier use of CAR T-cells in chemotherapy-refractory patients may well help reduce therapy burden and improve long-term survival outcomes, she added.

As for cost, drugs.com reports that the therapy runs to more than $612,000 per infusion. But Dr. Shah said insurers are covering the treatment. She added that there are efforts to expand the indication so CAR T-cell therapy can be used earlier in patients who are chemotherapy-refractory.

Novartis funded the study. Dr. Shah discloses ties with Lentigen, VOR, and CARGO, ImmunoACT, and Sobi. Dr. Rouce reports relationships with Pfizer and Novartis.

About 45,000 people will descend on Chicago for the American Society of Clinical Oncology (ASCO) annual meeting, starting May 31.

From its origins in 1964, ASCO’s annual event has grown to become the world’s largest clinical oncology meeting, drawing attendees from across the globe.

More than 7000 abstracts were submitted for this year’s meeting a new record — and over 5000 were selected for presentation.

This year’s chair of the Annual Meeting Education Committee, Thomas William LeBlanc, MD, told us he has been attending the meeting since his training days more than a decade ago.

The event is “just incredibly empowering and energizing,” Dr. LeBlanc said, with opportunities to catch up with old colleagues and meet new ones, learn how far oncology has come and where it’s headed, and hear clinical pearls to take back the clinic.

This year’s theme, selected by ASCO President Lynn M. Schuchter, MD, is “The Art and Science of Cancer Care: From Comfort to Cure.” 

Dr. LeBlanc, a blood cancer specialist at Duke University, Durham, North Carolina, said the theme has been woven throughout the abstract and educational sessions. Most sessions will have at least one presentation related to how we support people — not only “when we cure them but also when we can’t cure them,” he said.

Topics will include patient well-being, comfort measures, and survivorship. And for the first time the plenary session will include a palliative care abstract that addresses whether or not palliative care can be delivered effectively through telemedicine. The session is on Sunday, June 2. 

Other potentially practice changing plenary abstracts tackle immunotherapy combinations for resectable melanoma, perioperative chemotherapy vs neoadjuvant chemoradiation for esophageal cancer, and osimertinib after definitive chemoradiotherapy for unresectable non–small cell lung cancer.

ASCO is piloting a slightly different format for research presentations this year. Instead of starting with context and background, speakers have been asked to present study results upfront as well as repeat them at the end of the talk. The reason behind the tweak is that engagement and retention tend to be better when results are presented upfront, instead of just at the end of a talk.

A popular session — ASCO Voices — has also been given a more central position in the conference: Friday, May 31. In this session, speakers will give short presentations about their personal experiences as providers, researchers, or patients.

ASCO Voices is a relatively recent addition to the meeting that has grown and gotten better. The talks are usually “very powerful narratives” that remind clinicians about “the importance of what they’re doing each day,” Dr. LeBlanc said.

Snippets of the talks will be played while people wait for sessions to begin at the meeting, so attendees who miss the Friday talks can still hear them.

In terms of educational sessions, Dr. LeBlanc highlighted two that might be of general interest to practicing oncologists: A joint ASCO/American Association for Cancer Research session entitled “Drugging the ‘Undruggable’ Target: Successes, Challenges, and the Road Ahead,” on Sunday morning and “Common Sense Oncology: Equity, Value, and Outcomes That Matter” on Monday morning.

As a blood cancer specialist, he said he is particularly interested in the topline results from the ASC4FIRST trial of asciminib, a newer kinase inhibitor, in newly diagnosed chronic myeloid leukemia, presented on Friday.

As in past years, this news organization will be on hand providing coverage with a dedicated team of reporters, editors, and videographers. Stop by our exhibit hall booth — number 26030 — to learn about the tools we offer to support your practice.
 

A version of this article appeared on Medscape.com .

About 45,000 people will descend on Chicago for the American Society of Clinical Oncology (ASCO) annual meeting, starting May 31.

From its origins in 1964, ASCO’s annual event has grown to become the world’s largest clinical oncology meeting, drawing attendees from across the globe.

More than 7000 abstracts were submitted for this year’s meeting a new record — and over 5000 were selected for presentation.

This year’s chair of the Annual Meeting Education Committee, Thomas William LeBlanc, MD, told us he has been attending the meeting since his training days more than a decade ago.

The event is “just incredibly empowering and energizing,” Dr. LeBlanc said, with opportunities to catch up with old colleagues and meet new ones, learn how far oncology has come and where it’s headed, and hear clinical pearls to take back the clinic.

This year’s theme, selected by ASCO President Lynn M. Schuchter, MD, is “The Art and Science of Cancer Care: From Comfort to Cure.” 

Dr. LeBlanc, a blood cancer specialist at Duke University, Durham, North Carolina, said the theme has been woven throughout the abstract and educational sessions. Most sessions will have at least one presentation related to how we support people — not only “when we cure them but also when we can’t cure them,” he said.

Topics will include patient well-being, comfort measures, and survivorship. And for the first time the plenary session will include a palliative care abstract that addresses whether or not palliative care can be delivered effectively through telemedicine. The session is on Sunday, June 2. 

Other potentially practice changing plenary abstracts tackle immunotherapy combinations for resectable melanoma, perioperative chemotherapy vs neoadjuvant chemoradiation for esophageal cancer, and osimertinib after definitive chemoradiotherapy for unresectable non–small cell lung cancer.

ASCO is piloting a slightly different format for research presentations this year. Instead of starting with context and background, speakers have been asked to present study results upfront as well as repeat them at the end of the talk. The reason behind the tweak is that engagement and retention tend to be better when results are presented upfront, instead of just at the end of a talk.

A popular session — ASCO Voices — has also been given a more central position in the conference: Friday, May 31. In this session, speakers will give short presentations about their personal experiences as providers, researchers, or patients.

ASCO Voices is a relatively recent addition to the meeting that has grown and gotten better. The talks are usually “very powerful narratives” that remind clinicians about “the importance of what they’re doing each day,” Dr. LeBlanc said.

Snippets of the talks will be played while people wait for sessions to begin at the meeting, so attendees who miss the Friday talks can still hear them.

In terms of educational sessions, Dr. LeBlanc highlighted two that might be of general interest to practicing oncologists: A joint ASCO/American Association for Cancer Research session entitled “Drugging the ‘Undruggable’ Target: Successes, Challenges, and the Road Ahead,” on Sunday morning and “Common Sense Oncology: Equity, Value, and Outcomes That Matter” on Monday morning.

As a blood cancer specialist, he said he is particularly interested in the topline results from the ASC4FIRST trial of asciminib, a newer kinase inhibitor, in newly diagnosed chronic myeloid leukemia, presented on Friday.

As in past years, this news organization will be on hand providing coverage with a dedicated team of reporters, editors, and videographers. Stop by our exhibit hall booth — number 26030 — to learn about the tools we offer to support your practice.
 

A version of this article appeared on Medscape.com .

About 45,000 people will descend on Chicago for the American Society of Clinical Oncology (ASCO) annual meeting, starting May 31.

From its origins in 1964, ASCO’s annual event has grown to become the world’s largest clinical oncology meeting, drawing attendees from across the globe.

More than 7000 abstracts were submitted for this year’s meeting a new record — and over 5000 were selected for presentation.

This year’s chair of the Annual Meeting Education Committee, Thomas William LeBlanc, MD, told us he has been attending the meeting since his training days more than a decade ago.

The event is “just incredibly empowering and energizing,” Dr. LeBlanc said, with opportunities to catch up with old colleagues and meet new ones, learn how far oncology has come and where it’s headed, and hear clinical pearls to take back the clinic.

This year’s theme, selected by ASCO President Lynn M. Schuchter, MD, is “The Art and Science of Cancer Care: From Comfort to Cure.” 

Dr. LeBlanc, a blood cancer specialist at Duke University, Durham, North Carolina, said the theme has been woven throughout the abstract and educational sessions. Most sessions will have at least one presentation related to how we support people — not only “when we cure them but also when we can’t cure them,” he said.

Topics will include patient well-being, comfort measures, and survivorship. And for the first time the plenary session will include a palliative care abstract that addresses whether or not palliative care can be delivered effectively through telemedicine. The session is on Sunday, June 2. 

Other potentially practice changing plenary abstracts tackle immunotherapy combinations for resectable melanoma, perioperative chemotherapy vs neoadjuvant chemoradiation for esophageal cancer, and osimertinib after definitive chemoradiotherapy for unresectable non–small cell lung cancer.

ASCO is piloting a slightly different format for research presentations this year. Instead of starting with context and background, speakers have been asked to present study results upfront as well as repeat them at the end of the talk. The reason behind the tweak is that engagement and retention tend to be better when results are presented upfront, instead of just at the end of a talk.

A popular session — ASCO Voices — has also been given a more central position in the conference: Friday, May 31. In this session, speakers will give short presentations about their personal experiences as providers, researchers, or patients.

ASCO Voices is a relatively recent addition to the meeting that has grown and gotten better. The talks are usually “very powerful narratives” that remind clinicians about “the importance of what they’re doing each day,” Dr. LeBlanc said.

Snippets of the talks will be played while people wait for sessions to begin at the meeting, so attendees who miss the Friday talks can still hear them.

In terms of educational sessions, Dr. LeBlanc highlighted two that might be of general interest to practicing oncologists: A joint ASCO/American Association for Cancer Research session entitled “Drugging the ‘Undruggable’ Target: Successes, Challenges, and the Road Ahead,” on Sunday morning and “Common Sense Oncology: Equity, Value, and Outcomes That Matter” on Monday morning.

As a blood cancer specialist, he said he is particularly interested in the topline results from the ASC4FIRST trial of asciminib, a newer kinase inhibitor, in newly diagnosed chronic myeloid leukemia, presented on Friday.

As in past years, this news organization will be on hand providing coverage with a dedicated team of reporters, editors, and videographers. Stop by our exhibit hall booth — number 26030 — to learn about the tools we offer to support your practice.
 

A version of this article appeared on Medscape.com .

A new clinical practice guideline by the American Society for Radiation Oncology (ASTRO) steers use of external beam radiation therapy (EBRT) for the palliation of symptomatic bone metastases, including recommendations concerning pain management and quality of life.

The guideline was needed to update previous recommendations and incorporate new high-quality evidence for the management of symptomatic bone metastases, Sara Alcorn, MD, PhD, of the University of Minnesota, Minneapolis, and colleagues wrote in Practical Radiation Oncology.

The focus was on the efficacy of EBRT in reducing pain, improving skeletal function, and enhancing quality of life, they wrote in the clinical practice guideline.

In developing their recommendations, the ASTRO task force reviewed evidence from 53 randomized controlled trials (RCTs) and 31 nonrandomized studies, and considered clinical experience.
 

Indications for Palliative Radiation

EBRT is strongly recommended for reducing pain from osseous metastasis and improving ambulatory status, sphincter function, and reducing pain in patients with spinal metastases causing compression of the spinal cord or cauda equina.

For patients with symptomatic bone metastases and an anticipated life expectancy of at least 4 weeks, EBRT is conditionally recommended to improve quality of life.

Implementation of other Treatments Alongside Palliative Radiation

Instead of RT alone, surgery with postoperative RT is conditionally recommended for patients with compression of the spinal cord or cauda equina.

Postoperative RT is strongly recommended for patients who have undergone surgery for non-spine bone metastases or spine metastases without involving spinal cord or cauda equina compression.

For patients with spinal bone metastases compressing the spinal cord or cauda equina, combining RT with dexamethasone is strongly recommended over RT alone.

Techniques, Dose-Fractionation, and Dose-Constraints for Initial Palliative Radiation

For patients with symptomatic bone metastases undergoing conventional palliative RT, strongly recommended doses are 800 cGy in 1 fraction, 2000 cGy in 5 fractions, 2400 cGy in 6 fractions, or 3000 cGy in 10 fractions.

For patients with spinal bone metastases causing compression of the spinal cord or cauda equina who are not candidates for initial surgical decompression and are treated with conventional palliative RT, strongly recommended doses are 800 cGy in 1 fraction, 1600 cGy in 2 fractions, 2000 cGy in 5 fractions, or 3000 cGy in 10 fractions.

When selecting dose-fractionation, consider patient and disease factors such as prognosis and radiosensitivity, the authors wrote.

Highly conformal planning and delivery techniques, such as intensity-modulated radiation therapy, are conditionally recommended for patients with spinal bone metastases compressing the spinal cord or cauda equina who are receiving dose-escalated palliative RT.

The strongly recommended stereotactic body radiotherapy (SBRT) doses for patients with symptomatic bone metastases are 1200 to 1600 cGy in 1 fraction for non-spine metastases and 2400 cGy in 2 fractions for spine metastases. Other established SBRT dose and fractionation regimens with similar biologically effective doses may be considered based on patient tumor characteristics, normal tissue factors, and physician experience.

For patients with symptomatic bone metastases who have an ECOG PS of 0-2, are not undergoing surgical intervention, and have no neurological symptoms, SBRT is conditionally recommended over conventional palliative RT. Other factors to consider include life expectancy, tumor radiosensitivity, and metastatic disease burden, the guideline says.
 

Techniques, Dose-Fractionation, and Dose-Constraints for Palliative Reirradiation

For patients with spinal bone metastases requiring reirradiation to the same site, the strongly recommended conventional palliative RT regimens are 800 cGy in 1 fraction, 2000 cGy in 5 fractions, 2400 cGy in 6 fractions, or 2000 cGy in 8 fractions. When determining the RT dose-fractionation, consider the prior RT dose, time interval, and total spinal cord tolerance, the guideline says.

Treatment with SBRT is conditionally recommended for patients with spinal bone metastases needing reirradiation at the same site. When determining if SBRT is appropriate, consider patient factors such as urgency of treatment, prognosis, and radio-resistance. In addition, consider the prior RT dose, time interval, and total spinal cord tolerance when determining the RT dose-fractionation, the authors say.

The strongly recommended options for patients with symptomatic non-spine bone metastases needing reirradiation at the same site are single-fraction RT (800 cGy in 1 fraction) or multifraction conventional palliative RT (2000 cGy in 5 fractions or 2400 cGy in 6 fractions).
 

Impact of Techniques and Dose-fractionation on Quality of Life and Toxicity

For patients with bone metastases undergoing palliative radiation, it is strongly recommended to use a shared decision-making approach to determine the dose, fractionation, and supportive measures to optimize quality of life.

“Based on published data, the ASTRO task force’s recommendations inform best clinical practices on palliative RT for symptomatic bone metastases,” the guideline panelists said.

Limitations

While the guideline provides comprehensive recommendations, the panelists underscored the importance of individualized treatment approaches. Future research is needed to address gaps in evidence, particularly regarding advanced RT techniques and reirradiation strategies.

Guideline development was funded by ASTRO, with the systematic evidence review funded by the Patient-Centered Outcomes Research Institute. The panelists disclosed relationships with AstraZeneca, Elekta, Teladoc, and others.

A new clinical practice guideline by the American Society for Radiation Oncology (ASTRO) steers use of external beam radiation therapy (EBRT) for the palliation of symptomatic bone metastases, including recommendations concerning pain management and quality of life.

The guideline was needed to update previous recommendations and incorporate new high-quality evidence for the management of symptomatic bone metastases, Sara Alcorn, MD, PhD, of the University of Minnesota, Minneapolis, and colleagues wrote in Practical Radiation Oncology.

The focus was on the efficacy of EBRT in reducing pain, improving skeletal function, and enhancing quality of life, they wrote in the clinical practice guideline.

In developing their recommendations, the ASTRO task force reviewed evidence from 53 randomized controlled trials (RCTs) and 31 nonrandomized studies, and considered clinical experience.
 

Indications for Palliative Radiation

EBRT is strongly recommended for reducing pain from osseous metastasis and improving ambulatory status, sphincter function, and reducing pain in patients with spinal metastases causing compression of the spinal cord or cauda equina.

For patients with symptomatic bone metastases and an anticipated life expectancy of at least 4 weeks, EBRT is conditionally recommended to improve quality of life.

Implementation of other Treatments Alongside Palliative Radiation

Instead of RT alone, surgery with postoperative RT is conditionally recommended for patients with compression of the spinal cord or cauda equina.

Postoperative RT is strongly recommended for patients who have undergone surgery for non-spine bone metastases or spine metastases without involving spinal cord or cauda equina compression.

For patients with spinal bone metastases compressing the spinal cord or cauda equina, combining RT with dexamethasone is strongly recommended over RT alone.

Techniques, Dose-Fractionation, and Dose-Constraints for Initial Palliative Radiation

For patients with symptomatic bone metastases undergoing conventional palliative RT, strongly recommended doses are 800 cGy in 1 fraction, 2000 cGy in 5 fractions, 2400 cGy in 6 fractions, or 3000 cGy in 10 fractions.

For patients with spinal bone metastases causing compression of the spinal cord or cauda equina who are not candidates for initial surgical decompression and are treated with conventional palliative RT, strongly recommended doses are 800 cGy in 1 fraction, 1600 cGy in 2 fractions, 2000 cGy in 5 fractions, or 3000 cGy in 10 fractions.

When selecting dose-fractionation, consider patient and disease factors such as prognosis and radiosensitivity, the authors wrote.

Highly conformal planning and delivery techniques, such as intensity-modulated radiation therapy, are conditionally recommended for patients with spinal bone metastases compressing the spinal cord or cauda equina who are receiving dose-escalated palliative RT.

The strongly recommended stereotactic body radiotherapy (SBRT) doses for patients with symptomatic bone metastases are 1200 to 1600 cGy in 1 fraction for non-spine metastases and 2400 cGy in 2 fractions for spine metastases. Other established SBRT dose and fractionation regimens with similar biologically effective doses may be considered based on patient tumor characteristics, normal tissue factors, and physician experience.

For patients with symptomatic bone metastases who have an ECOG PS of 0-2, are not undergoing surgical intervention, and have no neurological symptoms, SBRT is conditionally recommended over conventional palliative RT. Other factors to consider include life expectancy, tumor radiosensitivity, and metastatic disease burden, the guideline says.
 

Techniques, Dose-Fractionation, and Dose-Constraints for Palliative Reirradiation

For patients with spinal bone metastases requiring reirradiation to the same site, the strongly recommended conventional palliative RT regimens are 800 cGy in 1 fraction, 2000 cGy in 5 fractions, 2400 cGy in 6 fractions, or 2000 cGy in 8 fractions. When determining the RT dose-fractionation, consider the prior RT dose, time interval, and total spinal cord tolerance, the guideline says.

Treatment with SBRT is conditionally recommended for patients with spinal bone metastases needing reirradiation at the same site. When determining if SBRT is appropriate, consider patient factors such as urgency of treatment, prognosis, and radio-resistance. In addition, consider the prior RT dose, time interval, and total spinal cord tolerance when determining the RT dose-fractionation, the authors say.

The strongly recommended options for patients with symptomatic non-spine bone metastases needing reirradiation at the same site are single-fraction RT (800 cGy in 1 fraction) or multifraction conventional palliative RT (2000 cGy in 5 fractions or 2400 cGy in 6 fractions).
 

Impact of Techniques and Dose-fractionation on Quality of Life and Toxicity

For patients with bone metastases undergoing palliative radiation, it is strongly recommended to use a shared decision-making approach to determine the dose, fractionation, and supportive measures to optimize quality of life.

“Based on published data, the ASTRO task force’s recommendations inform best clinical practices on palliative RT for symptomatic bone metastases,” the guideline panelists said.

Limitations

While the guideline provides comprehensive recommendations, the panelists underscored the importance of individualized treatment approaches. Future research is needed to address gaps in evidence, particularly regarding advanced RT techniques and reirradiation strategies.

Guideline development was funded by ASTRO, with the systematic evidence review funded by the Patient-Centered Outcomes Research Institute. The panelists disclosed relationships with AstraZeneca, Elekta, Teladoc, and others.

A new clinical practice guideline by the American Society for Radiation Oncology (ASTRO) steers use of external beam radiation therapy (EBRT) for the palliation of symptomatic bone metastases, including recommendations concerning pain management and quality of life.

The guideline was needed to update previous recommendations and incorporate new high-quality evidence for the management of symptomatic bone metastases, Sara Alcorn, MD, PhD, of the University of Minnesota, Minneapolis, and colleagues wrote in Practical Radiation Oncology.

The focus was on the efficacy of EBRT in reducing pain, improving skeletal function, and enhancing quality of life, they wrote in the clinical practice guideline.

In developing their recommendations, the ASTRO task force reviewed evidence from 53 randomized controlled trials (RCTs) and 31 nonrandomized studies, and considered clinical experience.
 

Indications for Palliative Radiation

EBRT is strongly recommended for reducing pain from osseous metastasis and improving ambulatory status, sphincter function, and reducing pain in patients with spinal metastases causing compression of the spinal cord or cauda equina.

For patients with symptomatic bone metastases and an anticipated life expectancy of at least 4 weeks, EBRT is conditionally recommended to improve quality of life.

Implementation of other Treatments Alongside Palliative Radiation

Instead of RT alone, surgery with postoperative RT is conditionally recommended for patients with compression of the spinal cord or cauda equina.

Postoperative RT is strongly recommended for patients who have undergone surgery for non-spine bone metastases or spine metastases without involving spinal cord or cauda equina compression.

For patients with spinal bone metastases compressing the spinal cord or cauda equina, combining RT with dexamethasone is strongly recommended over RT alone.

Techniques, Dose-Fractionation, and Dose-Constraints for Initial Palliative Radiation

For patients with symptomatic bone metastases undergoing conventional palliative RT, strongly recommended doses are 800 cGy in 1 fraction, 2000 cGy in 5 fractions, 2400 cGy in 6 fractions, or 3000 cGy in 10 fractions.

For patients with spinal bone metastases causing compression of the spinal cord or cauda equina who are not candidates for initial surgical decompression and are treated with conventional palliative RT, strongly recommended doses are 800 cGy in 1 fraction, 1600 cGy in 2 fractions, 2000 cGy in 5 fractions, or 3000 cGy in 10 fractions.

When selecting dose-fractionation, consider patient and disease factors such as prognosis and radiosensitivity, the authors wrote.

Highly conformal planning and delivery techniques, such as intensity-modulated radiation therapy, are conditionally recommended for patients with spinal bone metastases compressing the spinal cord or cauda equina who are receiving dose-escalated palliative RT.

The strongly recommended stereotactic body radiotherapy (SBRT) doses for patients with symptomatic bone metastases are 1200 to 1600 cGy in 1 fraction for non-spine metastases and 2400 cGy in 2 fractions for spine metastases. Other established SBRT dose and fractionation regimens with similar biologically effective doses may be considered based on patient tumor characteristics, normal tissue factors, and physician experience.

For patients with symptomatic bone metastases who have an ECOG PS of 0-2, are not undergoing surgical intervention, and have no neurological symptoms, SBRT is conditionally recommended over conventional palliative RT. Other factors to consider include life expectancy, tumor radiosensitivity, and metastatic disease burden, the guideline says.
 

Techniques, Dose-Fractionation, and Dose-Constraints for Palliative Reirradiation

For patients with spinal bone metastases requiring reirradiation to the same site, the strongly recommended conventional palliative RT regimens are 800 cGy in 1 fraction, 2000 cGy in 5 fractions, 2400 cGy in 6 fractions, or 2000 cGy in 8 fractions. When determining the RT dose-fractionation, consider the prior RT dose, time interval, and total spinal cord tolerance, the guideline says.

Treatment with SBRT is conditionally recommended for patients with spinal bone metastases needing reirradiation at the same site. When determining if SBRT is appropriate, consider patient factors such as urgency of treatment, prognosis, and radio-resistance. In addition, consider the prior RT dose, time interval, and total spinal cord tolerance when determining the RT dose-fractionation, the authors say.

The strongly recommended options for patients with symptomatic non-spine bone metastases needing reirradiation at the same site are single-fraction RT (800 cGy in 1 fraction) or multifraction conventional palliative RT (2000 cGy in 5 fractions or 2400 cGy in 6 fractions).
 

Impact of Techniques and Dose-fractionation on Quality of Life and Toxicity

For patients with bone metastases undergoing palliative radiation, it is strongly recommended to use a shared decision-making approach to determine the dose, fractionation, and supportive measures to optimize quality of life.

“Based on published data, the ASTRO task force’s recommendations inform best clinical practices on palliative RT for symptomatic bone metastases,” the guideline panelists said.

Limitations

While the guideline provides comprehensive recommendations, the panelists underscored the importance of individualized treatment approaches. Future research is needed to address gaps in evidence, particularly regarding advanced RT techniques and reirradiation strategies.

Guideline development was funded by ASTRO, with the systematic evidence review funded by the Patient-Centered Outcomes Research Institute. The panelists disclosed relationships with AstraZeneca, Elekta, Teladoc, and others.

According to the Centers for Disease Control and Prevention (CDC), over 684,000 Americans are diagnosed with an “obesity-associated” cancer each year.

The incidence of many of these cancers has been rising in recent years, particularly among younger people — a trend that sits in contrast with the overall decline in cancers with no established relationship to excess weight, such as lung and skin cancers. 

Is obesity the new smoking? Not exactly.

Tracing a direct line between excess fat and cancer is much less clear-cut than it is with tobacco. While about 42% of cancers — including common ones such as colorectal and postmenopausal breast cancers — are considered obesity-related, only about 8% of incident cancers are attributed to excess body weight. People often develop those diseases regardless of weight.

Although plenty of evidence points to excess body fat as a cancer risk factor, it’s unclear at what point excess weight has an effect. Is gaining weight later in life, for instance, better or worse for cancer risk than being overweight or obese from a young age?

There’s another glaring knowledge gap: Does losing weight at some point in adulthood change the picture? In other words, how many of those 684,000 diagnoses might have been prevented if people shed excess pounds?

When it comes to weight and cancer risk, “there’s a lot we don’t know,” said Jennifer W. Bea, PhD, associate professor, health promotion sciences, University of Arizona, Tucson.

A Consistent but Complicated Relationship

Given the growing incidence of obesity — which currently affects about 42% of US adults and 20% of children and teenagers — it’s no surprise that many studies have delved into the potential effects of excess weight on cancer rates.

Although virtually all the evidence comes from large cohort studies, leaving the cause-effect question open, certain associations keep showing up.

“What we know is that, consistently, a higher body mass index [BMI] — particularly in the obese category — leads to a higher risk of multiple cancers,” said Jeffrey A. Meyerhardt, MD, MPH, codirector, Colon and Rectal Cancer Center, Dana-Farber Cancer Institute, Boston.

In a widely cited report published in The New England Journal of Medicine in 2016, the International Agency for Research on Cancer (IARC) analyzed over 1000 epidemiologic studies on body fat and cancer. The agency pointed to over a dozen cancers, including some of the most common and deadly, linked to excess body weight.

That list includes esophageal adenocarcinoma and endometrial cancer — associated with the highest risk — along with kidney, liver, stomach (gastric cardia), pancreatic, colorectal, postmenopausal breast, gallbladder, ovarian, and thyroid cancers, plus multiple myeloma and meningioma. There’s also “limited” evidence linking excess weight to additional cancer types, including aggressive prostate cancer and certain head and neck cancers.

At the same time, Dr. Meyerhardt said, many of those same cancers are also associated with issues that lead to, or coexist with, overweight and obesity, including poor diet, lack of exercise, and metabolic conditions such as diabetes. 

It’s a complicated web, and it’s likely, Dr. Meyerhardt said, that high BMI both directly affects cancer risk and is part of a “causal pathway” of other factors that do.

Regarding direct effects, preclinical research has pointed to multiple ways in which excess body fat could contribute to cancer, said Karen M. Basen-Engquist, PhD, MPH, professor, Division of Cancer Prevention and Population Services, The University of Texas MD Anderson Cancer Center, Houston.

One broad mechanism to help explain the obesity-cancer link is chronic systemic inflammation because excess fat tissue can raise levels of substances in the body, such as tumor necrosis factor alpha and interleukin 6, which fuel inflammation. Excess fat also contributes to hyperinsulinemia — too much insulin in the blood — which can help promote the growth and spread of tumor cells. 

But the underlying reasons also appear to vary by cancer type, Dr. Basen-Engquist said. With hormonally driven cancer types, such as breast and endometrial, excess body fat may alter hormone levels in ways that spur tumor growth. Extra fat tissue may, for example, convert androgens into estrogens, which could help feed estrogen-dependent tumors.

That, Dr. Basen-Engquist noted, could be why excess weight is associated with postmenopausal, not premenopausal, breast cancer: Before menopause, body fat is a relatively minor contributor to estrogen levels but becomes more important after menopause.

How Big Is the Effect?

While more than a dozen cancers have been consistently linked to excess weight, the strength of those associations varies considerably. 

Endometrial and esophageal cancers are two that stand out. In the 2016 IARC analysis, people with severe obesity had a seven-times greater risk for endometrial cancer and 4.8-times greater risk for esophageal adenocarcinoma vs people with a normal BMI.

With other cancers, the risk increases for those with severe obesity compared with a normal BMI were far more modest: 10% for ovarian cancer, 30% for colorectal cancer, and 80% for kidney and stomach cancers, for example. For postmenopausal breast cancer, every five-unit increase in BMI was associated with a 10% relative risk increase.

A 2018 study from the American Cancer Society, which attempted to estimate the proportion of cancers in the United States attributable to modifiable risk factors — including alcohol consumption, ultraviolet rays exposure, and physical inactivity — found that smoking accounted for the highest proportion of cancer cases by a wide margin (19%), but excess weight came in second (7.8%).

Again, weight appeared to play a bigger role in certain cancers than others: An estimated 60% of endometrial cancers were linked to excess weight, as were roughly one third of esophageal, kidney, and liver cancers. At the other end of the spectrum, just over 11% of breast, 5% of colorectal, and 4% of ovarian cancers were attributable to excess weight.

Even at the lower end, those rates could make a big difference on the population level, especially for groups with higher rates of obesity.

CDC data show that obesity-related cancers are rising among women younger than 50 years, most rapidly among Hispanic women, and some less common obesity-related cancers, such as stomach, thyroid and pancreatic, are also rising among Black individuals and Hispanic Americans.

Obesity may be one reason for growing cancer disparities, said Leah Ferrucci, PhD, MPH, assistant professor, epidemiology, Yale School of Public Health, New Haven, Connecticut. But, she added, the evidence is limited because Black individuals and Hispanic Americans are understudied.

When Do Extra Pounds Matter?

When it comes to cancer risk, at what point in life does excess weight, or weight gain, matter? Is the standard weight gain in middle age, for instance, as hazardous as being overweight or obese from a young age?

Some evidence suggests there’s no “safe” time for putting on excess pounds.

A recent meta-analysis concluded that weight gain at any point after age 18 years is associated with incremental increases in the risk for postmenopausal breast cancer. A 2023 study in JAMA Network Open found a similar pattern with colorectal and other gastrointestinal cancers: People who had sustained overweight or obesity from age 20 years through middle age faced an increased risk of developing those cancers after age 55 years. 

The timing of weight gain didn’t seem to matter either. The same elevated risk held among people who were normal weight in their younger years but became overweight after age 55 years.

Those studies focused on later-onset disease. But, in recent years, experts have tracked a troubling rise in early-onset cancers — those diagnosed before age 50 years — particularly gastrointestinal cancers. 

An obvious question, Dr. Meyerhardt said, is whether the growing prevalence of obesity among young people is partly to blame.

There’s some data to support that, he said. An analysis from the Nurses’ Health Study II found that women with obesity had double the risk for early-onset colorectal cancer as those with a normal BMI. And every 5-kg increase in weight after age 18 years was associated with a 9% increase in colorectal cancer risk.

But while obesity trends probably partly explain the rise in early-onset cancers, there is likely more to the story, Dr. Meyerhardt said.

“I think all of us who see an increasing number of patients under 50 with colorectal cancer know there’s a fair number who do not fit that [high BMI] profile,” he said. “There’s a fair number over 50 who don’t either.”

Does Weight Loss Help?

With all the evidence pointing to high BMI as a cancer risk factor, a logical conclusion is that weight loss should reduce that excess risk. However, Dr. Bea said, there’s actually little data to support that, and what exists comes from observational studies.

Some research has focused on people who had substantial weight loss after bariatric surgery, with encouraging results. A study published in JAMA found that among 5053 people who underwent bariatric surgery, 2.9% developed an obesity-related cancer over 10 years compared with 4.9% in the nonsurgery group.

Most people, however, aim for less dramatic weight loss, with the help of diet and exercise or sometimes medication. Some evidence shows that a modest degree of weight loss may lower the risks for postmenopausal breast and endometrial cancers. 

A 2020 pooled analysis found, for instance, that among women aged ≥ 50 years, those who lost as little as 2.0-4.5 kg, or 4.4-10.0 pounds, and kept it off for 10 years had a lower risk for breast cancer than women whose weight remained stable. And losing more weight — 9 kg, or about 20 pounds, or more — was even better for lowering cancer risk.

But other research suggests the opposite. A recent analysis found that people who lost weight within the past 2 years through diet and exercise had a higher risk for a range of cancers compared with those who did not lose weight. Overall, though, the increased risk was quite low.

Whatever the research does, or doesn’t, show about weight and cancer risk, Dr. Basen-Engquist said, it’s important that risk factors, obesity and otherwise, aren’t “used as blame tools.”

“With obesity, behavior certainly plays into it,” she said. “But there are so many influences on our behavior that are socially determined.”

Both Dr. Basen-Engquist and Dr. Meyerhardt said it’s important for clinicians to consider the individual in front of them and for everyone to set realistic expectations. 

People with obesity should not feel they have to become thin to be healthier, and no one has to leap from being sedentary to exercising several hours a week. 

“We don’t want patients to feel that if they don’t get to a stated goal in a guideline, it’s all for naught,” Dr. Meyerhardt said.

A version of this article appeared on Medscape.com.

According to the Centers for Disease Control and Prevention (CDC), over 684,000 Americans are diagnosed with an “obesity-associated” cancer each year.

The incidence of many of these cancers has been rising in recent years, particularly among younger people — a trend that sits in contrast with the overall decline in cancers with no established relationship to excess weight, such as lung and skin cancers. 

Is obesity the new smoking? Not exactly.

Tracing a direct line between excess fat and cancer is much less clear-cut than it is with tobacco. While about 42% of cancers — including common ones such as colorectal and postmenopausal breast cancers — are considered obesity-related, only about 8% of incident cancers are attributed to excess body weight. People often develop those diseases regardless of weight.

Although plenty of evidence points to excess body fat as a cancer risk factor, it’s unclear at what point excess weight has an effect. Is gaining weight later in life, for instance, better or worse for cancer risk than being overweight or obese from a young age?

There’s another glaring knowledge gap: Does losing weight at some point in adulthood change the picture? In other words, how many of those 684,000 diagnoses might have been prevented if people shed excess pounds?

When it comes to weight and cancer risk, “there’s a lot we don’t know,” said Jennifer W. Bea, PhD, associate professor, health promotion sciences, University of Arizona, Tucson.

A Consistent but Complicated Relationship

Given the growing incidence of obesity — which currently affects about 42% of US adults and 20% of children and teenagers — it’s no surprise that many studies have delved into the potential effects of excess weight on cancer rates.

Although virtually all the evidence comes from large cohort studies, leaving the cause-effect question open, certain associations keep showing up.

“What we know is that, consistently, a higher body mass index [BMI] — particularly in the obese category — leads to a higher risk of multiple cancers,” said Jeffrey A. Meyerhardt, MD, MPH, codirector, Colon and Rectal Cancer Center, Dana-Farber Cancer Institute, Boston.

In a widely cited report published in The New England Journal of Medicine in 2016, the International Agency for Research on Cancer (IARC) analyzed over 1000 epidemiologic studies on body fat and cancer. The agency pointed to over a dozen cancers, including some of the most common and deadly, linked to excess body weight.

That list includes esophageal adenocarcinoma and endometrial cancer — associated with the highest risk — along with kidney, liver, stomach (gastric cardia), pancreatic, colorectal, postmenopausal breast, gallbladder, ovarian, and thyroid cancers, plus multiple myeloma and meningioma. There’s also “limited” evidence linking excess weight to additional cancer types, including aggressive prostate cancer and certain head and neck cancers.

At the same time, Dr. Meyerhardt said, many of those same cancers are also associated with issues that lead to, or coexist with, overweight and obesity, including poor diet, lack of exercise, and metabolic conditions such as diabetes. 

It’s a complicated web, and it’s likely, Dr. Meyerhardt said, that high BMI both directly affects cancer risk and is part of a “causal pathway” of other factors that do.

Regarding direct effects, preclinical research has pointed to multiple ways in which excess body fat could contribute to cancer, said Karen M. Basen-Engquist, PhD, MPH, professor, Division of Cancer Prevention and Population Services, The University of Texas MD Anderson Cancer Center, Houston.

One broad mechanism to help explain the obesity-cancer link is chronic systemic inflammation because excess fat tissue can raise levels of substances in the body, such as tumor necrosis factor alpha and interleukin 6, which fuel inflammation. Excess fat also contributes to hyperinsulinemia — too much insulin in the blood — which can help promote the growth and spread of tumor cells. 

But the underlying reasons also appear to vary by cancer type, Dr. Basen-Engquist said. With hormonally driven cancer types, such as breast and endometrial, excess body fat may alter hormone levels in ways that spur tumor growth. Extra fat tissue may, for example, convert androgens into estrogens, which could help feed estrogen-dependent tumors.

That, Dr. Basen-Engquist noted, could be why excess weight is associated with postmenopausal, not premenopausal, breast cancer: Before menopause, body fat is a relatively minor contributor to estrogen levels but becomes more important after menopause.

How Big Is the Effect?

While more than a dozen cancers have been consistently linked to excess weight, the strength of those associations varies considerably. 

Endometrial and esophageal cancers are two that stand out. In the 2016 IARC analysis, people with severe obesity had a seven-times greater risk for endometrial cancer and 4.8-times greater risk for esophageal adenocarcinoma vs people with a normal BMI.

With other cancers, the risk increases for those with severe obesity compared with a normal BMI were far more modest: 10% for ovarian cancer, 30% for colorectal cancer, and 80% for kidney and stomach cancers, for example. For postmenopausal breast cancer, every five-unit increase in BMI was associated with a 10% relative risk increase.

A 2018 study from the American Cancer Society, which attempted to estimate the proportion of cancers in the United States attributable to modifiable risk factors — including alcohol consumption, ultraviolet rays exposure, and physical inactivity — found that smoking accounted for the highest proportion of cancer cases by a wide margin (19%), but excess weight came in second (7.8%).

Again, weight appeared to play a bigger role in certain cancers than others: An estimated 60% of endometrial cancers were linked to excess weight, as were roughly one third of esophageal, kidney, and liver cancers. At the other end of the spectrum, just over 11% of breast, 5% of colorectal, and 4% of ovarian cancers were attributable to excess weight.

Even at the lower end, those rates could make a big difference on the population level, especially for groups with higher rates of obesity.

CDC data show that obesity-related cancers are rising among women younger than 50 years, most rapidly among Hispanic women, and some less common obesity-related cancers, such as stomach, thyroid and pancreatic, are also rising among Black individuals and Hispanic Americans.

Obesity may be one reason for growing cancer disparities, said Leah Ferrucci, PhD, MPH, assistant professor, epidemiology, Yale School of Public Health, New Haven, Connecticut. But, she added, the evidence is limited because Black individuals and Hispanic Americans are understudied.

When Do Extra Pounds Matter?

When it comes to cancer risk, at what point in life does excess weight, or weight gain, matter? Is the standard weight gain in middle age, for instance, as hazardous as being overweight or obese from a young age?

Some evidence suggests there’s no “safe” time for putting on excess pounds.

A recent meta-analysis concluded that weight gain at any point after age 18 years is associated with incremental increases in the risk for postmenopausal breast cancer. A 2023 study in JAMA Network Open found a similar pattern with colorectal and other gastrointestinal cancers: People who had sustained overweight or obesity from age 20 years through middle age faced an increased risk of developing those cancers after age 55 years. 

The timing of weight gain didn’t seem to matter either. The same elevated risk held among people who were normal weight in their younger years but became overweight after age 55 years.

Those studies focused on later-onset disease. But, in recent years, experts have tracked a troubling rise in early-onset cancers — those diagnosed before age 50 years — particularly gastrointestinal cancers. 

An obvious question, Dr. Meyerhardt said, is whether the growing prevalence of obesity among young people is partly to blame.

There’s some data to support that, he said. An analysis from the Nurses’ Health Study II found that women with obesity had double the risk for early-onset colorectal cancer as those with a normal BMI. And every 5-kg increase in weight after age 18 years was associated with a 9% increase in colorectal cancer risk.

But while obesity trends probably partly explain the rise in early-onset cancers, there is likely more to the story, Dr. Meyerhardt said.

“I think all of us who see an increasing number of patients under 50 with colorectal cancer know there’s a fair number who do not fit that [high BMI] profile,” he said. “There’s a fair number over 50 who don’t either.”

Does Weight Loss Help?

With all the evidence pointing to high BMI as a cancer risk factor, a logical conclusion is that weight loss should reduce that excess risk. However, Dr. Bea said, there’s actually little data to support that, and what exists comes from observational studies.

Some research has focused on people who had substantial weight loss after bariatric surgery, with encouraging results. A study published in JAMA found that among 5053 people who underwent bariatric surgery, 2.9% developed an obesity-related cancer over 10 years compared with 4.9% in the nonsurgery group.

Most people, however, aim for less dramatic weight loss, with the help of diet and exercise or sometimes medication. Some evidence shows that a modest degree of weight loss may lower the risks for postmenopausal breast and endometrial cancers. 

A 2020 pooled analysis found, for instance, that among women aged ≥ 50 years, those who lost as little as 2.0-4.5 kg, or 4.4-10.0 pounds, and kept it off for 10 years had a lower risk for breast cancer than women whose weight remained stable. And losing more weight — 9 kg, or about 20 pounds, or more — was even better for lowering cancer risk.

But other research suggests the opposite. A recent analysis found that people who lost weight within the past 2 years through diet and exercise had a higher risk for a range of cancers compared with those who did not lose weight. Overall, though, the increased risk was quite low.

Whatever the research does, or doesn’t, show about weight and cancer risk, Dr. Basen-Engquist said, it’s important that risk factors, obesity and otherwise, aren’t “used as blame tools.”

“With obesity, behavior certainly plays into it,” she said. “But there are so many influences on our behavior that are socially determined.”

Both Dr. Basen-Engquist and Dr. Meyerhardt said it’s important for clinicians to consider the individual in front of them and for everyone to set realistic expectations. 

People with obesity should not feel they have to become thin to be healthier, and no one has to leap from being sedentary to exercising several hours a week. 

“We don’t want patients to feel that if they don’t get to a stated goal in a guideline, it’s all for naught,” Dr. Meyerhardt said.

A version of this article appeared on Medscape.com.

According to the Centers for Disease Control and Prevention (CDC), over 684,000 Americans are diagnosed with an “obesity-associated” cancer each year.

The incidence of many of these cancers has been rising in recent years, particularly among younger people — a trend that sits in contrast with the overall decline in cancers with no established relationship to excess weight, such as lung and skin cancers. 

Is obesity the new smoking? Not exactly.

Tracing a direct line between excess fat and cancer is much less clear-cut than it is with tobacco. While about 42% of cancers — including common ones such as colorectal and postmenopausal breast cancers — are considered obesity-related, only about 8% of incident cancers are attributed to excess body weight. People often develop those diseases regardless of weight.

Although plenty of evidence points to excess body fat as a cancer risk factor, it’s unclear at what point excess weight has an effect. Is gaining weight later in life, for instance, better or worse for cancer risk than being overweight or obese from a young age?

There’s another glaring knowledge gap: Does losing weight at some point in adulthood change the picture? In other words, how many of those 684,000 diagnoses might have been prevented if people shed excess pounds?

When it comes to weight and cancer risk, “there’s a lot we don’t know,” said Jennifer W. Bea, PhD, associate professor, health promotion sciences, University of Arizona, Tucson.

A Consistent but Complicated Relationship

Given the growing incidence of obesity — which currently affects about 42% of US adults and 20% of children and teenagers — it’s no surprise that many studies have delved into the potential effects of excess weight on cancer rates.

Although virtually all the evidence comes from large cohort studies, leaving the cause-effect question open, certain associations keep showing up.

“What we know is that, consistently, a higher body mass index [BMI] — particularly in the obese category — leads to a higher risk of multiple cancers,” said Jeffrey A. Meyerhardt, MD, MPH, codirector, Colon and Rectal Cancer Center, Dana-Farber Cancer Institute, Boston.

In a widely cited report published in The New England Journal of Medicine in 2016, the International Agency for Research on Cancer (IARC) analyzed over 1000 epidemiologic studies on body fat and cancer. The agency pointed to over a dozen cancers, including some of the most common and deadly, linked to excess body weight.

That list includes esophageal adenocarcinoma and endometrial cancer — associated with the highest risk — along with kidney, liver, stomach (gastric cardia), pancreatic, colorectal, postmenopausal breast, gallbladder, ovarian, and thyroid cancers, plus multiple myeloma and meningioma. There’s also “limited” evidence linking excess weight to additional cancer types, including aggressive prostate cancer and certain head and neck cancers.

At the same time, Dr. Meyerhardt said, many of those same cancers are also associated with issues that lead to, or coexist with, overweight and obesity, including poor diet, lack of exercise, and metabolic conditions such as diabetes. 

It’s a complicated web, and it’s likely, Dr. Meyerhardt said, that high BMI both directly affects cancer risk and is part of a “causal pathway” of other factors that do.

Regarding direct effects, preclinical research has pointed to multiple ways in which excess body fat could contribute to cancer, said Karen M. Basen-Engquist, PhD, MPH, professor, Division of Cancer Prevention and Population Services, The University of Texas MD Anderson Cancer Center, Houston.

One broad mechanism to help explain the obesity-cancer link is chronic systemic inflammation because excess fat tissue can raise levels of substances in the body, such as tumor necrosis factor alpha and interleukin 6, which fuel inflammation. Excess fat also contributes to hyperinsulinemia — too much insulin in the blood — which can help promote the growth and spread of tumor cells. 

But the underlying reasons also appear to vary by cancer type, Dr. Basen-Engquist said. With hormonally driven cancer types, such as breast and endometrial, excess body fat may alter hormone levels in ways that spur tumor growth. Extra fat tissue may, for example, convert androgens into estrogens, which could help feed estrogen-dependent tumors.

That, Dr. Basen-Engquist noted, could be why excess weight is associated with postmenopausal, not premenopausal, breast cancer: Before menopause, body fat is a relatively minor contributor to estrogen levels but becomes more important after menopause.

How Big Is the Effect?

While more than a dozen cancers have been consistently linked to excess weight, the strength of those associations varies considerably. 

Endometrial and esophageal cancers are two that stand out. In the 2016 IARC analysis, people with severe obesity had a seven-times greater risk for endometrial cancer and 4.8-times greater risk for esophageal adenocarcinoma vs people with a normal BMI.

With other cancers, the risk increases for those with severe obesity compared with a normal BMI were far more modest: 10% for ovarian cancer, 30% for colorectal cancer, and 80% for kidney and stomach cancers, for example. For postmenopausal breast cancer, every five-unit increase in BMI was associated with a 10% relative risk increase.

A 2018 study from the American Cancer Society, which attempted to estimate the proportion of cancers in the United States attributable to modifiable risk factors — including alcohol consumption, ultraviolet rays exposure, and physical inactivity — found that smoking accounted for the highest proportion of cancer cases by a wide margin (19%), but excess weight came in second (7.8%).

Again, weight appeared to play a bigger role in certain cancers than others: An estimated 60% of endometrial cancers were linked to excess weight, as were roughly one third of esophageal, kidney, and liver cancers. At the other end of the spectrum, just over 11% of breast, 5% of colorectal, and 4% of ovarian cancers were attributable to excess weight.

Even at the lower end, those rates could make a big difference on the population level, especially for groups with higher rates of obesity.

CDC data show that obesity-related cancers are rising among women younger than 50 years, most rapidly among Hispanic women, and some less common obesity-related cancers, such as stomach, thyroid and pancreatic, are also rising among Black individuals and Hispanic Americans.

Obesity may be one reason for growing cancer disparities, said Leah Ferrucci, PhD, MPH, assistant professor, epidemiology, Yale School of Public Health, New Haven, Connecticut. But, she added, the evidence is limited because Black individuals and Hispanic Americans are understudied.

When Do Extra Pounds Matter?

When it comes to cancer risk, at what point in life does excess weight, or weight gain, matter? Is the standard weight gain in middle age, for instance, as hazardous as being overweight or obese from a young age?

Some evidence suggests there’s no “safe” time for putting on excess pounds.

A recent meta-analysis concluded that weight gain at any point after age 18 years is associated with incremental increases in the risk for postmenopausal breast cancer. A 2023 study in JAMA Network Open found a similar pattern with colorectal and other gastrointestinal cancers: People who had sustained overweight or obesity from age 20 years through middle age faced an increased risk of developing those cancers after age 55 years. 

The timing of weight gain didn’t seem to matter either. The same elevated risk held among people who were normal weight in their younger years but became overweight after age 55 years.

Those studies focused on later-onset disease. But, in recent years, experts have tracked a troubling rise in early-onset cancers — those diagnosed before age 50 years — particularly gastrointestinal cancers. 

An obvious question, Dr. Meyerhardt said, is whether the growing prevalence of obesity among young people is partly to blame.

There’s some data to support that, he said. An analysis from the Nurses’ Health Study II found that women with obesity had double the risk for early-onset colorectal cancer as those with a normal BMI. And every 5-kg increase in weight after age 18 years was associated with a 9% increase in colorectal cancer risk.

But while obesity trends probably partly explain the rise in early-onset cancers, there is likely more to the story, Dr. Meyerhardt said.

“I think all of us who see an increasing number of patients under 50 with colorectal cancer know there’s a fair number who do not fit that [high BMI] profile,” he said. “There’s a fair number over 50 who don’t either.”

Does Weight Loss Help?

With all the evidence pointing to high BMI as a cancer risk factor, a logical conclusion is that weight loss should reduce that excess risk. However, Dr. Bea said, there’s actually little data to support that, and what exists comes from observational studies.

Some research has focused on people who had substantial weight loss after bariatric surgery, with encouraging results. A study published in JAMA found that among 5053 people who underwent bariatric surgery, 2.9% developed an obesity-related cancer over 10 years compared with 4.9% in the nonsurgery group.

Most people, however, aim for less dramatic weight loss, with the help of diet and exercise or sometimes medication. Some evidence shows that a modest degree of weight loss may lower the risks for postmenopausal breast and endometrial cancers. 

A 2020 pooled analysis found, for instance, that among women aged ≥ 50 years, those who lost as little as 2.0-4.5 kg, or 4.4-10.0 pounds, and kept it off for 10 years had a lower risk for breast cancer than women whose weight remained stable. And losing more weight — 9 kg, or about 20 pounds, or more — was even better for lowering cancer risk.

But other research suggests the opposite. A recent analysis found that people who lost weight within the past 2 years through diet and exercise had a higher risk for a range of cancers compared with those who did not lose weight. Overall, though, the increased risk was quite low.

Whatever the research does, or doesn’t, show about weight and cancer risk, Dr. Basen-Engquist said, it’s important that risk factors, obesity and otherwise, aren’t “used as blame tools.”

“With obesity, behavior certainly plays into it,” she said. “But there are so many influences on our behavior that are socially determined.”

Both Dr. Basen-Engquist and Dr. Meyerhardt said it’s important for clinicians to consider the individual in front of them and for everyone to set realistic expectations. 

People with obesity should not feel they have to become thin to be healthier, and no one has to leap from being sedentary to exercising several hours a week. 

“We don’t want patients to feel that if they don’t get to a stated goal in a guideline, it’s all for naught,” Dr. Meyerhardt said.

A version of this article appeared on Medscape.com.