FDA/CDC

A panel of US government advisers unanimously backed use of highly sensitive tests that check for minimal residual disease (MRD) in efforts to accelerate approvals of drugs for multiple myeloma, an incurable blood cancer.

The Oncologic Drugs Advisory Committee (ODAC) of the US Food and Drug Administration (FDA) voted 12-0 on April 12 on the following question: Does the evidence support the use of MRD as an accelerated approval endpoint in multiple myeloma clinical trials?

The FDA is not bound to accept the recommendations of its panels, but often does so.

ODAC panelists said they felt comfortable in this recommendation because they expected the FDA to mandate confirmatory studies of any drugs to be given accelerated approval based on MRD data.

There’s a risk that MRD results might mislead regulators into clearing a drug later found to lack benefit, said Christopher Hourigan, DM, DPhil, an ODAC panelist and a physician-scientist at Virginia Tech, Blacksburg, Virginia, who treats people with blood cancer. Further tests would ultimately show if drugs cleared based on MRD data actually delivered benefits such as extending progression-free survival (PFS).

“That’s why we’re talking about accelerated approval,” Dr. Hourigan said. “There is harm to inaction. We’re not currently curing people in multiple myeloma. I’m not willing to make patients wait on principle for a theoretical perfect that may never come.”

“Our responsibility is to accept the world as messy and be agile enough to adapt and iterate that the evidence develops rather than create barriers to the work of discovering effective new therapies for these patients,” he added.

Advances in testing now allow for detection of the presence of malignant cells at orders of magnitude below previous assessments. MRD assays used in tracking what’s happening with myeloma generally have a sensitivity level of 10^-5, or a detection capacity of one cell of 100,000, said Ola Landgren, MD, PhD, of the University of Miami, Miami, Florida, during a presentation at the meeting.

The April 12 meeting was somewhat unusual for ODAC.

Instead of reviewing the benefits and risks of a specific drug, the panel reviewed results from two separate major research efforts done to see how MRD could be used in development of drugs.

These were Dr. Landgren’s EVIDENCE (Evaluating minimal residual disease as an intermediate clinical endpoint for multiple myeloma) meta-analysis, and the similar work of the i2TEAMM group, affiliated with the International Myeloma Foundation.

In its review, the FDA staff noted differences in the approaches of the two groups. In its analysis, the i2TEAMM removed information about patients with missing MRD data, while the University of Miami team retained information about these kinds of patients in the analyses and assigned their status to be MRD positive.

The FDA staff also noted in their review and presentations weaknesses in the case for MRD. For example, the FDA staff noted that the treatment effect on MRD negativity was not statistically significant in 4 of the 8 treatment comparisons in the work from Dr. Landgren and colleagues.

The FDA staff looked at what these analyses suggested at both an individual level and trial level. The data from these two research projects taken as a whole showed “strong individual-level” associations between negative MRD findings and later positive outcomes for patients, although trial-level associations were “weak to moderate” in some cases, the staff wrote.

The FDA staff concluded that the research appeared to support arguments in favor of the “prognostic value,” even with outstanding questions about how best to use this test.

In the briefing document for the meeting, the FDA also emphasized the need for new treatments.

Multiple myeloma remains an incurable disease with a 5-year relative survival rate of 59.8%, even after significant recent progress in treatment, the agency said. In the past decade, the FDA has approved 15 new drugs and greater than 20 new indications have been approved for the treatment of patients with multiple myeloma.

The FDA has been working with drugmakers and academic researchers for several years to address the potential of MRD in development of blood cancers. The agency in 2020 issued a guidance document on this issue.

Several ODAC members praised the i2TEAMM and Dr. Landgren’s EVIDENCE teams for their work, which took place across several nations and extended over many years.

“This was a herculean effort. It really changes the playbook for how we think about biomarkers across all cancer types,” said ODAC panelist Neil Vasan, MD, PhD, of Columbia University, New York, NY. “To me, the important word was reasonable. Is this a reasonable surrogate endpoint? Is this a reasonable intermediate endpoint? I think it is more than reasonable.”

Still, ODAC panelist Jorge Nieva, MD, raised a point of concern about how use of MRD as an endpoint could change the design of studies. He urged caution among researchers about potential ramping up of collection of MRD tests in search of more robust data, which could lead to more testing for patients.

“I have this tremendous fear that this is going to mean every myeloma protocol has a marrow biopsy every six weeks on the patients forever,” said Dr. Nieva of the Keck School of Medicine, University of Southern California, Los Angeles. “I just don’t want to see that happen. So I think we need to balance these two things.”

A panel of US government advisers unanimously backed use of highly sensitive tests that check for minimal residual disease (MRD) in efforts to accelerate approvals of drugs for multiple myeloma, an incurable blood cancer.

The Oncologic Drugs Advisory Committee (ODAC) of the US Food and Drug Administration (FDA) voted 12-0 on April 12 on the following question: Does the evidence support the use of MRD as an accelerated approval endpoint in multiple myeloma clinical trials?

The FDA is not bound to accept the recommendations of its panels, but often does so.

ODAC panelists said they felt comfortable in this recommendation because they expected the FDA to mandate confirmatory studies of any drugs to be given accelerated approval based on MRD data.

There’s a risk that MRD results might mislead regulators into clearing a drug later found to lack benefit, said Christopher Hourigan, DM, DPhil, an ODAC panelist and a physician-scientist at Virginia Tech, Blacksburg, Virginia, who treats people with blood cancer. Further tests would ultimately show if drugs cleared based on MRD data actually delivered benefits such as extending progression-free survival (PFS).

“That’s why we’re talking about accelerated approval,” Dr. Hourigan said. “There is harm to inaction. We’re not currently curing people in multiple myeloma. I’m not willing to make patients wait on principle for a theoretical perfect that may never come.”

“Our responsibility is to accept the world as messy and be agile enough to adapt and iterate that the evidence develops rather than create barriers to the work of discovering effective new therapies for these patients,” he added.

Advances in testing now allow for detection of the presence of malignant cells at orders of magnitude below previous assessments. MRD assays used in tracking what’s happening with myeloma generally have a sensitivity level of 10^-5, or a detection capacity of one cell of 100,000, said Ola Landgren, MD, PhD, of the University of Miami, Miami, Florida, during a presentation at the meeting.

The April 12 meeting was somewhat unusual for ODAC.

Instead of reviewing the benefits and risks of a specific drug, the panel reviewed results from two separate major research efforts done to see how MRD could be used in development of drugs.

These were Dr. Landgren’s EVIDENCE (Evaluating minimal residual disease as an intermediate clinical endpoint for multiple myeloma) meta-analysis, and the similar work of the i2TEAMM group, affiliated with the International Myeloma Foundation.

In its review, the FDA staff noted differences in the approaches of the two groups. In its analysis, the i2TEAMM removed information about patients with missing MRD data, while the University of Miami team retained information about these kinds of patients in the analyses and assigned their status to be MRD positive.

The FDA staff also noted in their review and presentations weaknesses in the case for MRD. For example, the FDA staff noted that the treatment effect on MRD negativity was not statistically significant in 4 of the 8 treatment comparisons in the work from Dr. Landgren and colleagues.

The FDA staff looked at what these analyses suggested at both an individual level and trial level. The data from these two research projects taken as a whole showed “strong individual-level” associations between negative MRD findings and later positive outcomes for patients, although trial-level associations were “weak to moderate” in some cases, the staff wrote.

The FDA staff concluded that the research appeared to support arguments in favor of the “prognostic value,” even with outstanding questions about how best to use this test.

In the briefing document for the meeting, the FDA also emphasized the need for new treatments.

Multiple myeloma remains an incurable disease with a 5-year relative survival rate of 59.8%, even after significant recent progress in treatment, the agency said. In the past decade, the FDA has approved 15 new drugs and greater than 20 new indications have been approved for the treatment of patients with multiple myeloma.

The FDA has been working with drugmakers and academic researchers for several years to address the potential of MRD in development of blood cancers. The agency in 2020 issued a guidance document on this issue.

Several ODAC members praised the i2TEAMM and Dr. Landgren’s EVIDENCE teams for their work, which took place across several nations and extended over many years.

“This was a herculean effort. It really changes the playbook for how we think about biomarkers across all cancer types,” said ODAC panelist Neil Vasan, MD, PhD, of Columbia University, New York, NY. “To me, the important word was reasonable. Is this a reasonable surrogate endpoint? Is this a reasonable intermediate endpoint? I think it is more than reasonable.”

Still, ODAC panelist Jorge Nieva, MD, raised a point of concern about how use of MRD as an endpoint could change the design of studies. He urged caution among researchers about potential ramping up of collection of MRD tests in search of more robust data, which could lead to more testing for patients.

“I have this tremendous fear that this is going to mean every myeloma protocol has a marrow biopsy every six weeks on the patients forever,” said Dr. Nieva of the Keck School of Medicine, University of Southern California, Los Angeles. “I just don’t want to see that happen. So I think we need to balance these two things.”

A panel of US government advisers unanimously backed use of highly sensitive tests that check for minimal residual disease (MRD) in efforts to accelerate approvals of drugs for multiple myeloma, an incurable blood cancer.

The Oncologic Drugs Advisory Committee (ODAC) of the US Food and Drug Administration (FDA) voted 12-0 on April 12 on the following question: Does the evidence support the use of MRD as an accelerated approval endpoint in multiple myeloma clinical trials?

The FDA is not bound to accept the recommendations of its panels, but often does so.

ODAC panelists said they felt comfortable in this recommendation because they expected the FDA to mandate confirmatory studies of any drugs to be given accelerated approval based on MRD data.

There’s a risk that MRD results might mislead regulators into clearing a drug later found to lack benefit, said Christopher Hourigan, DM, DPhil, an ODAC panelist and a physician-scientist at Virginia Tech, Blacksburg, Virginia, who treats people with blood cancer. Further tests would ultimately show if drugs cleared based on MRD data actually delivered benefits such as extending progression-free survival (PFS).

“That’s why we’re talking about accelerated approval,” Dr. Hourigan said. “There is harm to inaction. We’re not currently curing people in multiple myeloma. I’m not willing to make patients wait on principle for a theoretical perfect that may never come.”

“Our responsibility is to accept the world as messy and be agile enough to adapt and iterate that the evidence develops rather than create barriers to the work of discovering effective new therapies for these patients,” he added.

Advances in testing now allow for detection of the presence of malignant cells at orders of magnitude below previous assessments. MRD assays used in tracking what’s happening with myeloma generally have a sensitivity level of 10^-5, or a detection capacity of one cell of 100,000, said Ola Landgren, MD, PhD, of the University of Miami, Miami, Florida, during a presentation at the meeting.

The April 12 meeting was somewhat unusual for ODAC.

Instead of reviewing the benefits and risks of a specific drug, the panel reviewed results from two separate major research efforts done to see how MRD could be used in development of drugs.

These were Dr. Landgren’s EVIDENCE (Evaluating minimal residual disease as an intermediate clinical endpoint for multiple myeloma) meta-analysis, and the similar work of the i2TEAMM group, affiliated with the International Myeloma Foundation.

In its review, the FDA staff noted differences in the approaches of the two groups. In its analysis, the i2TEAMM removed information about patients with missing MRD data, while the University of Miami team retained information about these kinds of patients in the analyses and assigned their status to be MRD positive.

The FDA staff also noted in their review and presentations weaknesses in the case for MRD. For example, the FDA staff noted that the treatment effect on MRD negativity was not statistically significant in 4 of the 8 treatment comparisons in the work from Dr. Landgren and colleagues.

The FDA staff looked at what these analyses suggested at both an individual level and trial level. The data from these two research projects taken as a whole showed “strong individual-level” associations between negative MRD findings and later positive outcomes for patients, although trial-level associations were “weak to moderate” in some cases, the staff wrote.

The FDA staff concluded that the research appeared to support arguments in favor of the “prognostic value,” even with outstanding questions about how best to use this test.

In the briefing document for the meeting, the FDA also emphasized the need for new treatments.

Multiple myeloma remains an incurable disease with a 5-year relative survival rate of 59.8%, even after significant recent progress in treatment, the agency said. In the past decade, the FDA has approved 15 new drugs and greater than 20 new indications have been approved for the treatment of patients with multiple myeloma.

The FDA has been working with drugmakers and academic researchers for several years to address the potential of MRD in development of blood cancers. The agency in 2020 issued a guidance document on this issue.

Several ODAC members praised the i2TEAMM and Dr. Landgren’s EVIDENCE teams for their work, which took place across several nations and extended over many years.

“This was a herculean effort. It really changes the playbook for how we think about biomarkers across all cancer types,” said ODAC panelist Neil Vasan, MD, PhD, of Columbia University, New York, NY. “To me, the important word was reasonable. Is this a reasonable surrogate endpoint? Is this a reasonable intermediate endpoint? I think it is more than reasonable.”

Still, ODAC panelist Jorge Nieva, MD, raised a point of concern about how use of MRD as an endpoint could change the design of studies. He urged caution among researchers about potential ramping up of collection of MRD tests in search of more robust data, which could lead to more testing for patients.

“I have this tremendous fear that this is going to mean every myeloma protocol has a marrow biopsy every six weeks on the patients forever,” said Dr. Nieva of the Keck School of Medicine, University of Southern California, Los Angeles. “I just don’t want to see that happen. So I think we need to balance these two things.”

On April 4, 2024, the US Food and Drug Administration (FDA) accepted a supplemental Biologics License Application (sBLA) to review bimekizumab-bkzx, an interleukin (IL)-17A and IL-17F inhibitor, for the treatment of adults with moderate to severe hidradenitis suppurativa (HS).

The agency also accepted a second sBLA for a bimekizumab-bkzx 2-mL device.

The developments were announced in a press release from UCB, the manufacturer of bimekizumab-bkzx (Bimzelx), which was first approved in the United States in October 2023 for the treatment of moderate to severe plaque psoriasis in adults who are candidates for systemic therapy or phototherapy.

According to the press release, acceptance of the sBLA was based on results from two phase 3 studies known as BE HEARD I and BE HEARD II, which found that bimekizumab-bkzx showed clinically meaningful improvements compared with placebo at week 16 and were sustained to week 48. If approved, this would be the first HS approval for bimekizumab-bkzx worldwide. In the European Union, it is approved for treating adults with psoriatic arthritis and axial spondyloarthritis, in addition to moderate to severe psoriasis.

According to the company, approval of the 2-mL injection device would mean that patients would have an alternative one-injection regimen option; currently, one dose for psoriasis is administered as two 1-mL injections. Full US prescribing information for bimekizumab-bkzx can be found here.

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

On April 4, 2024, the US Food and Drug Administration (FDA) accepted a supplemental Biologics License Application (sBLA) to review bimekizumab-bkzx, an interleukin (IL)-17A and IL-17F inhibitor, for the treatment of adults with moderate to severe hidradenitis suppurativa (HS).

The agency also accepted a second sBLA for a bimekizumab-bkzx 2-mL device.

The developments were announced in a press release from UCB, the manufacturer of bimekizumab-bkzx (Bimzelx), which was first approved in the United States in October 2023 for the treatment of moderate to severe plaque psoriasis in adults who are candidates for systemic therapy or phototherapy.

According to the press release, acceptance of the sBLA was based on results from two phase 3 studies known as BE HEARD I and BE HEARD II, which found that bimekizumab-bkzx showed clinically meaningful improvements compared with placebo at week 16 and were sustained to week 48. If approved, this would be the first HS approval for bimekizumab-bkzx worldwide. In the European Union, it is approved for treating adults with psoriatic arthritis and axial spondyloarthritis, in addition to moderate to severe psoriasis.

According to the company, approval of the 2-mL injection device would mean that patients would have an alternative one-injection regimen option; currently, one dose for psoriasis is administered as two 1-mL injections. Full US prescribing information for bimekizumab-bkzx can be found here.

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

On April 4, 2024, the US Food and Drug Administration (FDA) accepted a supplemental Biologics License Application (sBLA) to review bimekizumab-bkzx, an interleukin (IL)-17A and IL-17F inhibitor, for the treatment of adults with moderate to severe hidradenitis suppurativa (HS).

The agency also accepted a second sBLA for a bimekizumab-bkzx 2-mL device.

The developments were announced in a press release from UCB, the manufacturer of bimekizumab-bkzx (Bimzelx), which was first approved in the United States in October 2023 for the treatment of moderate to severe plaque psoriasis in adults who are candidates for systemic therapy or phototherapy.

According to the press release, acceptance of the sBLA was based on results from two phase 3 studies known as BE HEARD I and BE HEARD II, which found that bimekizumab-bkzx showed clinically meaningful improvements compared with placebo at week 16 and were sustained to week 48. If approved, this would be the first HS approval for bimekizumab-bkzx worldwide. In the European Union, it is approved for treating adults with psoriatic arthritis and axial spondyloarthritis, in addition to moderate to severe psoriasis.

According to the company, approval of the 2-mL injection device would mean that patients would have an alternative one-injection regimen option; currently, one dose for psoriasis is administered as two 1-mL injections. Full US prescribing information for bimekizumab-bkzx can be found here.

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

SAN DIEGO — Fewer than half of the cancer drugs approved under the US Food and Drug Administration’s (FDA’s) accelerated approval pathway between 2013 and 2017 have been shown to improve overall survival or quality of life, despite being on the US market for more than 5 years, according to a new study. 

Under the program, drugs are approved for marketing if they show benefit in surrogate markers thought to indicate efficacy. Progression-free survival, tumor response, and duration of response are the most used surrogate markers for accelerated approvals of cancer drugs. These are based largely on imaging studies that show either a stop in growth in the case of progression-free survival or tumor shrinkage in the case of tumor response. 

Following accelerated approvals, companies are then supposed to show actual clinical benefit in confirmatory trials.

The problem with relying on surrogate markers for drug approvals is that they don’t always correlate with longer survival or improved quality of life, said Edward Cliff, MBBS, who presented the findings at the American Association for Cancer Research 2024 annual meeting (abstract 918). The study was also published in JAMA to coincide with the meeting presentation.

In some cancers, these markers work well, but in others they don’t, said Dr. Cliff, a hematology trainee at Brigham and Women’s Hospital, Boston, when the work was conducted, and now a hematology fellow at the Peter MacCallum Cancer Centre in Melbourne, Australia.

To determine whether cancer drugs granted accelerated approval ultimately show an overall survival or quality of life benefit, researchers reviewed 46 cancer drugs granted accelerated approvals between 2013 and 2017. Twenty (43%) were granted full approval after demonstrating survival or quality-of-life benefits. 

Nine, however, were converted to full approvals on the basis of surrogate markers. These include a full approval for pembrolizumab in previously treated recurrent or refractory head and neck squamous cell carcinoma and a full approval for nivolumab for refractory locally advanced or metastatic urothelial carcinoma, both based on tumor response rate and duration of response.

Of the remaining 17 drugs evaluated in the trial, 10 have been withdrawn and seven do not yet have confirmatory trial results. 

The reliance on surrogate markers means that these drugs are used for treatment, covered by insurance, and added to guidelines — all without solid evidence of real-world clinical benefit, said Dr. Cliff. 

However, the goal should not be to do away with the accelerated approval process, because it sometimes does deliver powerful agents to patients quickly. Instead, Dr. Cliff told this news organization, the system needs to be improved so that “we keep the speed while getting certainty around clinical benefits” with robust and timely confirmatory trials. 

In the meantime, “clinicians should communicate with patients about any residual uncertainty of clinical benefit when they offer novel therapies,” Dr. Cliff explained. “It’s important for them to have the information.”

There has been some progress on the issue. In December 2022, the US Congress passed the Food and Drug Administration Omnibus Reform Act. Among other things, the Act requires companies to have confirmation trials underway as a condition for accelerated approval, and to provide regular reports on their progress. The Act also expedites the withdrawal process for drugs that don’t show a benefit. 

The Act has been put to the test twice recently. In February, FDA used the expedited process to remove the multiple myeloma drug melphalan flufenamide from the market. Melphalan flufenamide hadn’t been sold in the US for quite some time, so the process wasn’t contentious. 

In March, Regeneron announced that accelerated approval for the follicular and diffuse B cell lymphoma drug odronextamab has been delayed pending enrollment in a confirmatory trial. 

“There have been some promising steps,” Dr. Cliff said, but much work needs to be done. 

Study moderator Shivaani Kummar, MD, agreed, noting that “the data is showing that the confirmatory trials aren’t happening at the pace which they should.” 

But the solution is not to curtail approvals; it’s to make sure that accelerated approval commitments are met, said Dr. Kummar.

Still, “as a practicing oncologist, I welcome the accelerated pathway,” Dr. Kummar, a medical oncologist/hematologist at Oregon Health & Science University, Portland, told this news organization. “I want the availability to my patients.” 

Having drugs approved on the basis of surrogate markers doesn’t necessarily mean patients are getting ineffective therapies, Dr. Kummar noted. For instance, if an agent just shrinks the tumor, it can sometimes still be “a huge clinical benefit because it can take the symptoms away.” 

As for prescribing drugs based on accelerated approvals, she said she tells her patients that trials have been promising, but we don’t know what the long-term effects are. She and her patient then make a decision together. 

The study was funded by Arnold Ventures. Dr. Kummar reported support from several companies, including Bayer, Gilead, and others. Dr. Cliff had no disclosures. 
 

A version of this article appeared on Medscape.com.

SAN DIEGO — Fewer than half of the cancer drugs approved under the US Food and Drug Administration’s (FDA’s) accelerated approval pathway between 2013 and 2017 have been shown to improve overall survival or quality of life, despite being on the US market for more than 5 years, according to a new study. 

Under the program, drugs are approved for marketing if they show benefit in surrogate markers thought to indicate efficacy. Progression-free survival, tumor response, and duration of response are the most used surrogate markers for accelerated approvals of cancer drugs. These are based largely on imaging studies that show either a stop in growth in the case of progression-free survival or tumor shrinkage in the case of tumor response. 

Following accelerated approvals, companies are then supposed to show actual clinical benefit in confirmatory trials.

The problem with relying on surrogate markers for drug approvals is that they don’t always correlate with longer survival or improved quality of life, said Edward Cliff, MBBS, who presented the findings at the American Association for Cancer Research 2024 annual meeting (abstract 918). The study was also published in JAMA to coincide with the meeting presentation.

In some cancers, these markers work well, but in others they don’t, said Dr. Cliff, a hematology trainee at Brigham and Women’s Hospital, Boston, when the work was conducted, and now a hematology fellow at the Peter MacCallum Cancer Centre in Melbourne, Australia.

To determine whether cancer drugs granted accelerated approval ultimately show an overall survival or quality of life benefit, researchers reviewed 46 cancer drugs granted accelerated approvals between 2013 and 2017. Twenty (43%) were granted full approval after demonstrating survival or quality-of-life benefits. 

Nine, however, were converted to full approvals on the basis of surrogate markers. These include a full approval for pembrolizumab in previously treated recurrent or refractory head and neck squamous cell carcinoma and a full approval for nivolumab for refractory locally advanced or metastatic urothelial carcinoma, both based on tumor response rate and duration of response.

Of the remaining 17 drugs evaluated in the trial, 10 have been withdrawn and seven do not yet have confirmatory trial results. 

The reliance on surrogate markers means that these drugs are used for treatment, covered by insurance, and added to guidelines — all without solid evidence of real-world clinical benefit, said Dr. Cliff. 

However, the goal should not be to do away with the accelerated approval process, because it sometimes does deliver powerful agents to patients quickly. Instead, Dr. Cliff told this news organization, the system needs to be improved so that “we keep the speed while getting certainty around clinical benefits” with robust and timely confirmatory trials. 

In the meantime, “clinicians should communicate with patients about any residual uncertainty of clinical benefit when they offer novel therapies,” Dr. Cliff explained. “It’s important for them to have the information.”

There has been some progress on the issue. In December 2022, the US Congress passed the Food and Drug Administration Omnibus Reform Act. Among other things, the Act requires companies to have confirmation trials underway as a condition for accelerated approval, and to provide regular reports on their progress. The Act also expedites the withdrawal process for drugs that don’t show a benefit. 

The Act has been put to the test twice recently. In February, FDA used the expedited process to remove the multiple myeloma drug melphalan flufenamide from the market. Melphalan flufenamide hadn’t been sold in the US for quite some time, so the process wasn’t contentious. 

In March, Regeneron announced that accelerated approval for the follicular and diffuse B cell lymphoma drug odronextamab has been delayed pending enrollment in a confirmatory trial. 

“There have been some promising steps,” Dr. Cliff said, but much work needs to be done. 

Study moderator Shivaani Kummar, MD, agreed, noting that “the data is showing that the confirmatory trials aren’t happening at the pace which they should.” 

But the solution is not to curtail approvals; it’s to make sure that accelerated approval commitments are met, said Dr. Kummar.

Still, “as a practicing oncologist, I welcome the accelerated pathway,” Dr. Kummar, a medical oncologist/hematologist at Oregon Health & Science University, Portland, told this news organization. “I want the availability to my patients.” 

Having drugs approved on the basis of surrogate markers doesn’t necessarily mean patients are getting ineffective therapies, Dr. Kummar noted. For instance, if an agent just shrinks the tumor, it can sometimes still be “a huge clinical benefit because it can take the symptoms away.” 

As for prescribing drugs based on accelerated approvals, she said she tells her patients that trials have been promising, but we don’t know what the long-term effects are. She and her patient then make a decision together. 

The study was funded by Arnold Ventures. Dr. Kummar reported support from several companies, including Bayer, Gilead, and others. Dr. Cliff had no disclosures. 
 

A version of this article appeared on Medscape.com.

SAN DIEGO — Fewer than half of the cancer drugs approved under the US Food and Drug Administration’s (FDA’s) accelerated approval pathway between 2013 and 2017 have been shown to improve overall survival or quality of life, despite being on the US market for more than 5 years, according to a new study. 

Under the program, drugs are approved for marketing if they show benefit in surrogate markers thought to indicate efficacy. Progression-free survival, tumor response, and duration of response are the most used surrogate markers for accelerated approvals of cancer drugs. These are based largely on imaging studies that show either a stop in growth in the case of progression-free survival or tumor shrinkage in the case of tumor response. 

Following accelerated approvals, companies are then supposed to show actual clinical benefit in confirmatory trials.

The problem with relying on surrogate markers for drug approvals is that they don’t always correlate with longer survival or improved quality of life, said Edward Cliff, MBBS, who presented the findings at the American Association for Cancer Research 2024 annual meeting (abstract 918). The study was also published in JAMA to coincide with the meeting presentation.

In some cancers, these markers work well, but in others they don’t, said Dr. Cliff, a hematology trainee at Brigham and Women’s Hospital, Boston, when the work was conducted, and now a hematology fellow at the Peter MacCallum Cancer Centre in Melbourne, Australia.

To determine whether cancer drugs granted accelerated approval ultimately show an overall survival or quality of life benefit, researchers reviewed 46 cancer drugs granted accelerated approvals between 2013 and 2017. Twenty (43%) were granted full approval after demonstrating survival or quality-of-life benefits. 

Nine, however, were converted to full approvals on the basis of surrogate markers. These include a full approval for pembrolizumab in previously treated recurrent or refractory head and neck squamous cell carcinoma and a full approval for nivolumab for refractory locally advanced or metastatic urothelial carcinoma, both based on tumor response rate and duration of response.

Of the remaining 17 drugs evaluated in the trial, 10 have been withdrawn and seven do not yet have confirmatory trial results. 

The reliance on surrogate markers means that these drugs are used for treatment, covered by insurance, and added to guidelines — all without solid evidence of real-world clinical benefit, said Dr. Cliff. 

However, the goal should not be to do away with the accelerated approval process, because it sometimes does deliver powerful agents to patients quickly. Instead, Dr. Cliff told this news organization, the system needs to be improved so that “we keep the speed while getting certainty around clinical benefits” with robust and timely confirmatory trials. 

In the meantime, “clinicians should communicate with patients about any residual uncertainty of clinical benefit when they offer novel therapies,” Dr. Cliff explained. “It’s important for them to have the information.”

There has been some progress on the issue. In December 2022, the US Congress passed the Food and Drug Administration Omnibus Reform Act. Among other things, the Act requires companies to have confirmation trials underway as a condition for accelerated approval, and to provide regular reports on their progress. The Act also expedites the withdrawal process for drugs that don’t show a benefit. 

The Act has been put to the test twice recently. In February, FDA used the expedited process to remove the multiple myeloma drug melphalan flufenamide from the market. Melphalan flufenamide hadn’t been sold in the US for quite some time, so the process wasn’t contentious. 

In March, Regeneron announced that accelerated approval for the follicular and diffuse B cell lymphoma drug odronextamab has been delayed pending enrollment in a confirmatory trial. 

“There have been some promising steps,” Dr. Cliff said, but much work needs to be done. 

Study moderator Shivaani Kummar, MD, agreed, noting that “the data is showing that the confirmatory trials aren’t happening at the pace which they should.” 

But the solution is not to curtail approvals; it’s to make sure that accelerated approval commitments are met, said Dr. Kummar.

Still, “as a practicing oncologist, I welcome the accelerated pathway,” Dr. Kummar, a medical oncologist/hematologist at Oregon Health & Science University, Portland, told this news organization. “I want the availability to my patients.” 

Having drugs approved on the basis of surrogate markers doesn’t necessarily mean patients are getting ineffective therapies, Dr. Kummar noted. For instance, if an agent just shrinks the tumor, it can sometimes still be “a huge clinical benefit because it can take the symptoms away.” 

As for prescribing drugs based on accelerated approvals, she said she tells her patients that trials have been promising, but we don’t know what the long-term effects are. She and her patient then make a decision together. 

The study was funded by Arnold Ventures. Dr. Kummar reported support from several companies, including Bayer, Gilead, and others. Dr. Cliff had no disclosures. 
 

A version of this article appeared on Medscape.com.

The US Food and Drug Administration (FDA) has expanded the approval of fam-trastuzumab–deruxtecan-nxki (Enhertu; AstraZeneca and Daiichi Sankyo, Inc) to adults with unresectable or metastatic HER2-positive solid tumors who have no satisfactory alternative after prior systemic treatment.

The agent had already been approved for several cancer types, including certain patients with unresectable or metastatic HER2-positive breast cancer as well as adults with locally advanced or metastatic HER2-positive gastric or gastroesophageal junction adenocarcinoma who had received a prior trastuzumab-based regimen.

The current accelerated approval is the first tumor-agnostic approval of a HER2-directed therapy and antibody drug conjugate.

“Until approval of trastuzumab deruxtecan, patients with metastatic HER2-positive tumors have had limited treatment options,” Funda Meric-Bernstam, MD, chair of investigational cancer therapeutics at the University of Texas MD Anderson Cancer Center, Houston, said in an AstraZeneca press statement. “Based on the clinically meaningful response rates across clinical trials, this tumor-agnostic approval means that patients may now be treated with a HER2-directed medicine.”

Approval was based on findings in 192 patients enrolled in either the DESTINY-PanTumor02 trial, the DESTINY-Lung01 trial, or the DESTINY-CRC02 trial. Patients in the multicenter trials underwent treatment until disease progression, death, withdrawal of consent or unacceptable toxicity.

Confirmed objective response rates were 51.4%, 52.9%, and 46.9% in the three studies, respectively. Median duration of response was 19.4, 6.9, and 5.5 months, respectively.

The most common adverse reactions occurring in at least 20% of patients included decreased white blood cell count, hemoglobin, lymphocyte count, and neutrophil count, as well as nausea, fatigue, platelet count, vomiting, alopecia, diarrhea, stomatitis, and upper respiratory tract infection.

Full prescribing information includes a boxed warning about the risk for interstitial lung disease and embryo-fetal toxicity. 

The recommended dosage is 5.4 mg/kg given as an intravenous infusion one every 3 weeks until disease progression or unacceptable toxicity.
 

A version of this article appeared on Medscape.com.

The US Food and Drug Administration (FDA) has expanded the approval of fam-trastuzumab–deruxtecan-nxki (Enhertu; AstraZeneca and Daiichi Sankyo, Inc) to adults with unresectable or metastatic HER2-positive solid tumors who have no satisfactory alternative after prior systemic treatment.

The agent had already been approved for several cancer types, including certain patients with unresectable or metastatic HER2-positive breast cancer as well as adults with locally advanced or metastatic HER2-positive gastric or gastroesophageal junction adenocarcinoma who had received a prior trastuzumab-based regimen.

The current accelerated approval is the first tumor-agnostic approval of a HER2-directed therapy and antibody drug conjugate.

“Until approval of trastuzumab deruxtecan, patients with metastatic HER2-positive tumors have had limited treatment options,” Funda Meric-Bernstam, MD, chair of investigational cancer therapeutics at the University of Texas MD Anderson Cancer Center, Houston, said in an AstraZeneca press statement. “Based on the clinically meaningful response rates across clinical trials, this tumor-agnostic approval means that patients may now be treated with a HER2-directed medicine.”

Approval was based on findings in 192 patients enrolled in either the DESTINY-PanTumor02 trial, the DESTINY-Lung01 trial, or the DESTINY-CRC02 trial. Patients in the multicenter trials underwent treatment until disease progression, death, withdrawal of consent or unacceptable toxicity.

Confirmed objective response rates were 51.4%, 52.9%, and 46.9% in the three studies, respectively. Median duration of response was 19.4, 6.9, and 5.5 months, respectively.

The most common adverse reactions occurring in at least 20% of patients included decreased white blood cell count, hemoglobin, lymphocyte count, and neutrophil count, as well as nausea, fatigue, platelet count, vomiting, alopecia, diarrhea, stomatitis, and upper respiratory tract infection.

Full prescribing information includes a boxed warning about the risk for interstitial lung disease and embryo-fetal toxicity. 

The recommended dosage is 5.4 mg/kg given as an intravenous infusion one every 3 weeks until disease progression or unacceptable toxicity.
 

A version of this article appeared on Medscape.com.

The US Food and Drug Administration (FDA) has expanded the approval of fam-trastuzumab–deruxtecan-nxki (Enhertu; AstraZeneca and Daiichi Sankyo, Inc) to adults with unresectable or metastatic HER2-positive solid tumors who have no satisfactory alternative after prior systemic treatment.

The agent had already been approved for several cancer types, including certain patients with unresectable or metastatic HER2-positive breast cancer as well as adults with locally advanced or metastatic HER2-positive gastric or gastroesophageal junction adenocarcinoma who had received a prior trastuzumab-based regimen.

The current accelerated approval is the first tumor-agnostic approval of a HER2-directed therapy and antibody drug conjugate.

“Until approval of trastuzumab deruxtecan, patients with metastatic HER2-positive tumors have had limited treatment options,” Funda Meric-Bernstam, MD, chair of investigational cancer therapeutics at the University of Texas MD Anderson Cancer Center, Houston, said in an AstraZeneca press statement. “Based on the clinically meaningful response rates across clinical trials, this tumor-agnostic approval means that patients may now be treated with a HER2-directed medicine.”

Approval was based on findings in 192 patients enrolled in either the DESTINY-PanTumor02 trial, the DESTINY-Lung01 trial, or the DESTINY-CRC02 trial. Patients in the multicenter trials underwent treatment until disease progression, death, withdrawal of consent or unacceptable toxicity.

Confirmed objective response rates were 51.4%, 52.9%, and 46.9% in the three studies, respectively. Median duration of response was 19.4, 6.9, and 5.5 months, respectively.

The most common adverse reactions occurring in at least 20% of patients included decreased white blood cell count, hemoglobin, lymphocyte count, and neutrophil count, as well as nausea, fatigue, platelet count, vomiting, alopecia, diarrhea, stomatitis, and upper respiratory tract infection.

Full prescribing information includes a boxed warning about the risk for interstitial lung disease and embryo-fetal toxicity. 

The recommended dosage is 5.4 mg/kg given as an intravenous infusion one every 3 weeks until disease progression or unacceptable toxicity.
 

A version of this article appeared on Medscape.com.

The US Food and Drug Administration (FDA) has approved idecabtagene vicleucel (ide-cel) (Abecma, Bristol-Myers Squibb/2seventy bio) for adults with relapsed or refractory multiple myeloma after two or more prior lines of therapy, including an immunomodulatory agent, a proteasome inhibitor, and an anti-CD38 monoclonal antibody. 

The approval expands the chimeric antigen receptor (CAR) T-cell therapy’s indications to earlier lines of treatment after exposure to these other main therapy classes, Bristol Myers Squibb said in a press release. 

Approval was based on the KarMMa-3 trial, in which 254 patients were randomly assigned to ide-cel and 132 to investigators’ choice of standard regimens, consisting of combinations of daratumumab, dexamethasone, and other agents. 

After a median follow-up of 15.9 months, median progression-free survival was three times higher in the ide-cel arm: 13.3 months with the CAR T-cell therapy vs 4.4 months with standard treatment. Overall, 39% of patients on ide-cel had a complete response vs 5% on standard regimens. 

The approval includes a new recommended dose range of 300-510 x 106 CAR-positive T cells. 

Ide-cel carries a boxed warning for cytokine release syndrome, neurologic toxicities, hemophagocytic lymphohistiocytosis/macrophage activation syndrome, prolonged cytopenia, and secondary hematologic cancers. 

In trials, cytokine release syndrome occurred in 89% (310 of 349) of patients in the KarMMa-3 and KarMMa studies, which included grade 3 syndrome in 7% (23 of 349) and fatal cases in 0.9% (3 of 349) of patients.

A one-time treatment is over $500,000, according to drugs.com.

A version of this article appeared on Medscape.com.

The US Food and Drug Administration (FDA) has approved idecabtagene vicleucel (ide-cel) (Abecma, Bristol-Myers Squibb/2seventy bio) for adults with relapsed or refractory multiple myeloma after two or more prior lines of therapy, including an immunomodulatory agent, a proteasome inhibitor, and an anti-CD38 monoclonal antibody. 

The approval expands the chimeric antigen receptor (CAR) T-cell therapy’s indications to earlier lines of treatment after exposure to these other main therapy classes, Bristol Myers Squibb said in a press release. 

Approval was based on the KarMMa-3 trial, in which 254 patients were randomly assigned to ide-cel and 132 to investigators’ choice of standard regimens, consisting of combinations of daratumumab, dexamethasone, and other agents. 

After a median follow-up of 15.9 months, median progression-free survival was three times higher in the ide-cel arm: 13.3 months with the CAR T-cell therapy vs 4.4 months with standard treatment. Overall, 39% of patients on ide-cel had a complete response vs 5% on standard regimens. 

The approval includes a new recommended dose range of 300-510 x 106 CAR-positive T cells. 

Ide-cel carries a boxed warning for cytokine release syndrome, neurologic toxicities, hemophagocytic lymphohistiocytosis/macrophage activation syndrome, prolonged cytopenia, and secondary hematologic cancers. 

In trials, cytokine release syndrome occurred in 89% (310 of 349) of patients in the KarMMa-3 and KarMMa studies, which included grade 3 syndrome in 7% (23 of 349) and fatal cases in 0.9% (3 of 349) of patients.

A one-time treatment is over $500,000, according to drugs.com.

A version of this article appeared on Medscape.com.

The US Food and Drug Administration (FDA) has approved idecabtagene vicleucel (ide-cel) (Abecma, Bristol-Myers Squibb/2seventy bio) for adults with relapsed or refractory multiple myeloma after two or more prior lines of therapy, including an immunomodulatory agent, a proteasome inhibitor, and an anti-CD38 monoclonal antibody. 

The approval expands the chimeric antigen receptor (CAR) T-cell therapy’s indications to earlier lines of treatment after exposure to these other main therapy classes, Bristol Myers Squibb said in a press release. 

Approval was based on the KarMMa-3 trial, in which 254 patients were randomly assigned to ide-cel and 132 to investigators’ choice of standard regimens, consisting of combinations of daratumumab, dexamethasone, and other agents. 

After a median follow-up of 15.9 months, median progression-free survival was three times higher in the ide-cel arm: 13.3 months with the CAR T-cell therapy vs 4.4 months with standard treatment. Overall, 39% of patients on ide-cel had a complete response vs 5% on standard regimens. 

The approval includes a new recommended dose range of 300-510 x 106 CAR-positive T cells. 

Ide-cel carries a boxed warning for cytokine release syndrome, neurologic toxicities, hemophagocytic lymphohistiocytosis/macrophage activation syndrome, prolonged cytopenia, and secondary hematologic cancers. 

In trials, cytokine release syndrome occurred in 89% (310 of 349) of patients in the KarMMa-3 and KarMMa studies, which included grade 3 syndrome in 7% (23 of 349) and fatal cases in 0.9% (3 of 349) of patients.

A one-time treatment is over $500,000, according to drugs.com.

A version of this article appeared on Medscape.com.

The US Food and Drug Administration has approved danicopan (Voydeya, AstraZeneca) as an add-on therapy to treat extravascular hemolysis in adults receiving ravulizumab or eculizumab for paroxysmal nocturnal hemoglobinuria (PNH), according to a press release from AstraZeneca.

PNH is a rare blood disorder affecting 1-10 individuals per million. The condition, which eliminates red blood cells and leads to blood clots and impaired bone marrow function, can cause life-threatening anemia, thrombosis, and bone marrow dysfunction. About half of people with the condition die from thrombotic complications.

Ravulizumab and eculizumab, also both made by AstraZeneca, inhibit the destruction of red blood cells. However, 10%-20% of patients treated with the antibody infusions experience significant extravascular hemolysis, in which these surviving red blood cells are eliminated by the spleen and liver. Extravascular hemolysis can lead to ongoing anemia, which can lead patients to require blood transfusions.

Danicopan, an investigational, first-in-class, oral complement factor D inhibitor, is designed to control intravascular hemolysis and prevent extravascular hemolysis.

Approval of the oral medication was based on the phase 3 ALPHA trial in 63 patients with PNH who received ravulizumab or eculizumab and experienced significant extravascular hemolysis. These patients were randomized 2:1 to either danicopan or placebo.

Danicopan add-on significantly improved hemoglobin concentrations at 12 weeks (least squares mean improvement from baseline: 2.94 g/dL with danicopan vs 0.50 g/dL with placebo) and made transfusions less likely.

Headache, nausea, arthralgia, and diarrhea were the most common treatment-emergent side effects. Serious adverse events in the danicopan group included cholecystitis and COVID-19 in one patient each.

Danicopan carries a boxed warning of serious infections and is available only through a Risk Evaluation and Mitigation Strategy program.

A version of this article appeared on Medscape.com.

The US Food and Drug Administration has approved danicopan (Voydeya, AstraZeneca) as an add-on therapy to treat extravascular hemolysis in adults receiving ravulizumab or eculizumab for paroxysmal nocturnal hemoglobinuria (PNH), according to a press release from AstraZeneca.

PNH is a rare blood disorder affecting 1-10 individuals per million. The condition, which eliminates red blood cells and leads to blood clots and impaired bone marrow function, can cause life-threatening anemia, thrombosis, and bone marrow dysfunction. About half of people with the condition die from thrombotic complications.

Ravulizumab and eculizumab, also both made by AstraZeneca, inhibit the destruction of red blood cells. However, 10%-20% of patients treated with the antibody infusions experience significant extravascular hemolysis, in which these surviving red blood cells are eliminated by the spleen and liver. Extravascular hemolysis can lead to ongoing anemia, which can lead patients to require blood transfusions.

Danicopan, an investigational, first-in-class, oral complement factor D inhibitor, is designed to control intravascular hemolysis and prevent extravascular hemolysis.

Approval of the oral medication was based on the phase 3 ALPHA trial in 63 patients with PNH who received ravulizumab or eculizumab and experienced significant extravascular hemolysis. These patients were randomized 2:1 to either danicopan or placebo.

Danicopan add-on significantly improved hemoglobin concentrations at 12 weeks (least squares mean improvement from baseline: 2.94 g/dL with danicopan vs 0.50 g/dL with placebo) and made transfusions less likely.

Headache, nausea, arthralgia, and diarrhea were the most common treatment-emergent side effects. Serious adverse events in the danicopan group included cholecystitis and COVID-19 in one patient each.

Danicopan carries a boxed warning of serious infections and is available only through a Risk Evaluation and Mitigation Strategy program.

A version of this article appeared on Medscape.com.

The US Food and Drug Administration has approved danicopan (Voydeya, AstraZeneca) as an add-on therapy to treat extravascular hemolysis in adults receiving ravulizumab or eculizumab for paroxysmal nocturnal hemoglobinuria (PNH), according to a press release from AstraZeneca.

PNH is a rare blood disorder affecting 1-10 individuals per million. The condition, which eliminates red blood cells and leads to blood clots and impaired bone marrow function, can cause life-threatening anemia, thrombosis, and bone marrow dysfunction. About half of people with the condition die from thrombotic complications.

Ravulizumab and eculizumab, also both made by AstraZeneca, inhibit the destruction of red blood cells. However, 10%-20% of patients treated with the antibody infusions experience significant extravascular hemolysis, in which these surviving red blood cells are eliminated by the spleen and liver. Extravascular hemolysis can lead to ongoing anemia, which can lead patients to require blood transfusions.

Danicopan, an investigational, first-in-class, oral complement factor D inhibitor, is designed to control intravascular hemolysis and prevent extravascular hemolysis.

Approval of the oral medication was based on the phase 3 ALPHA trial in 63 patients with PNH who received ravulizumab or eculizumab and experienced significant extravascular hemolysis. These patients were randomized 2:1 to either danicopan or placebo.

Danicopan add-on significantly improved hemoglobin concentrations at 12 weeks (least squares mean improvement from baseline: 2.94 g/dL with danicopan vs 0.50 g/dL with placebo) and made transfusions less likely.

Headache, nausea, arthralgia, and diarrhea were the most common treatment-emergent side effects. Serious adverse events in the danicopan group included cholecystitis and COVID-19 in one patient each.

Danicopan carries a boxed warning of serious infections and is available only through a Risk Evaluation and Mitigation Strategy program.

A version of this article appeared on Medscape.com.

Regeneron Pharmaceuticals said in an interview that it may be the first company to have an accelerated approval application for its cancer drug rebuffed by the US Food and Drug Administration (FDA) due to concerns about the timing of completion of confirmatory research.

The company once had hoped to win this US clearance for odronextamab in relapsed/refractory (R/R) follicular lymphoma (FL) and in R/R diffuse large B-cell lymphoma (DLBCL) by March 31. Last year when Regeneron announced the FDA’s decision to grant priority review for odronextamab, the firm said that the end of this month was the US regulators’ target decision date.

But on March 25, Regeneron said the FDA issued two complete response letters (CRLs) in connection with odronextamab application. It will not approve the experimental medicine at this time.

In the release, Regeneron said the only approvability issue is related to the enrollment status of the confirmatory trials. The letters did not identify issues with the odronextamab clinical efficacy or safety, trial design, labeling, or manufacturing.

“While we acknowledge the general concerns that FDA has about sponsors failing to complete their postmarketing confirmatory trials, the relevant laws and regulatory guidances do not lay out rigid criteria for assessing whether the progress on a confirmatory trial is adequate to allow for an accelerated approval,” Tammy Allen, Regeneron’s director for product and pipeline communications, said in an email. “ And to our knowledge, this is the first time the FDA has issued a CRL for this reason.”

There has been rising concern in recent years about the gap between initial accelerated approvals for medicines and the completion of studies that show whether these promising therapies actually help patients live longer or better. Thus, a serious knowledge gap arises, often for many years, while patients and physicians use drugs with as yet unproven benefit. Recent studies highlighting this knowledge gap include work from Harvard’s Program on Regulation, Therapeutics, and Law (PORTAL) group and researchers at the University of Pennsylvania.

While Congress has long sought to speed approvals of new drugs, in 2022 lawmakers gave the FDA more clout for efforts to shorten the period of uncertainty between accelerated and traditional approval. Congress added a provision to a large spending package that said the federal government could require a study or studies to be underway prior to approval, or within a specified time period after the date of approval, of the applicable product.

“As this is new territory for us and for industry, we’re committed to working closely with them to address and plan on sharing updates on enrollment and regulatory timelines later this year,” Ms. Allen said.

The FDA generally does not comment on applications under review. In response to a question about Regeneron’s statements, an FDA spokeswoman pointed out by email that the 2022 law had made clear how the agency can decline approval if confirmatory clinical trials are not considered underway prior to approval.

Odronextamab is potentially part of a rapidly advancing field of lymphoma treatments, which include autologous chimeric antigen receptor (CAR T-cell) therapy in certain settings. There are severe constraints, though, on CAR-T therapy, including manufacturing delays and treatment-related toxicities. Odronextamab is part of what are called “off-the-shelf” drugs with the same aim as CAR-T. The bispecific antibodies (BsAb) are meant to teach the immune system to fight cancer.

Regeneron said it has been actively enrolling patients in multiple phase 3 trials for odronextamab as part of its OLYMPIA program. The company said this is intended to change the treatment paradigm of several B-cell non-Hodgkin lymphoma subtypes, including in earlier lines of therapy.

Enrollment in the dose-finding portion has begun, but the CRLs indicate that the confirmatory portions of these trials should be underway and that the timelines to completion should be agreed on prior to resubmission, Regeneron said. The company added that it is working closely with the FDA and investigators to bring odronextamab to patients with R/R FL and R/R DLBCL as quickly as possible. The company plans to share updates on enrollment and regulatory timelines later this year.

Regeneron Pharmaceuticals said in an interview that it may be the first company to have an accelerated approval application for its cancer drug rebuffed by the US Food and Drug Administration (FDA) due to concerns about the timing of completion of confirmatory research.

The company once had hoped to win this US clearance for odronextamab in relapsed/refractory (R/R) follicular lymphoma (FL) and in R/R diffuse large B-cell lymphoma (DLBCL) by March 31. Last year when Regeneron announced the FDA’s decision to grant priority review for odronextamab, the firm said that the end of this month was the US regulators’ target decision date.

But on March 25, Regeneron said the FDA issued two complete response letters (CRLs) in connection with odronextamab application. It will not approve the experimental medicine at this time.

In the release, Regeneron said the only approvability issue is related to the enrollment status of the confirmatory trials. The letters did not identify issues with the odronextamab clinical efficacy or safety, trial design, labeling, or manufacturing.

“While we acknowledge the general concerns that FDA has about sponsors failing to complete their postmarketing confirmatory trials, the relevant laws and regulatory guidances do not lay out rigid criteria for assessing whether the progress on a confirmatory trial is adequate to allow for an accelerated approval,” Tammy Allen, Regeneron’s director for product and pipeline communications, said in an email. “ And to our knowledge, this is the first time the FDA has issued a CRL for this reason.”

There has been rising concern in recent years about the gap between initial accelerated approvals for medicines and the completion of studies that show whether these promising therapies actually help patients live longer or better. Thus, a serious knowledge gap arises, often for many years, while patients and physicians use drugs with as yet unproven benefit. Recent studies highlighting this knowledge gap include work from Harvard’s Program on Regulation, Therapeutics, and Law (PORTAL) group and researchers at the University of Pennsylvania.

While Congress has long sought to speed approvals of new drugs, in 2022 lawmakers gave the FDA more clout for efforts to shorten the period of uncertainty between accelerated and traditional approval. Congress added a provision to a large spending package that said the federal government could require a study or studies to be underway prior to approval, or within a specified time period after the date of approval, of the applicable product.

“As this is new territory for us and for industry, we’re committed to working closely with them to address and plan on sharing updates on enrollment and regulatory timelines later this year,” Ms. Allen said.

The FDA generally does not comment on applications under review. In response to a question about Regeneron’s statements, an FDA spokeswoman pointed out by email that the 2022 law had made clear how the agency can decline approval if confirmatory clinical trials are not considered underway prior to approval.

Odronextamab is potentially part of a rapidly advancing field of lymphoma treatments, which include autologous chimeric antigen receptor (CAR T-cell) therapy in certain settings. There are severe constraints, though, on CAR-T therapy, including manufacturing delays and treatment-related toxicities. Odronextamab is part of what are called “off-the-shelf” drugs with the same aim as CAR-T. The bispecific antibodies (BsAb) are meant to teach the immune system to fight cancer.

Regeneron said it has been actively enrolling patients in multiple phase 3 trials for odronextamab as part of its OLYMPIA program. The company said this is intended to change the treatment paradigm of several B-cell non-Hodgkin lymphoma subtypes, including in earlier lines of therapy.

Enrollment in the dose-finding portion has begun, but the CRLs indicate that the confirmatory portions of these trials should be underway and that the timelines to completion should be agreed on prior to resubmission, Regeneron said. The company added that it is working closely with the FDA and investigators to bring odronextamab to patients with R/R FL and R/R DLBCL as quickly as possible. The company plans to share updates on enrollment and regulatory timelines later this year.

Regeneron Pharmaceuticals said in an interview that it may be the first company to have an accelerated approval application for its cancer drug rebuffed by the US Food and Drug Administration (FDA) due to concerns about the timing of completion of confirmatory research.

The company once had hoped to win this US clearance for odronextamab in relapsed/refractory (R/R) follicular lymphoma (FL) and in R/R diffuse large B-cell lymphoma (DLBCL) by March 31. Last year when Regeneron announced the FDA’s decision to grant priority review for odronextamab, the firm said that the end of this month was the US regulators’ target decision date.

But on March 25, Regeneron said the FDA issued two complete response letters (CRLs) in connection with odronextamab application. It will not approve the experimental medicine at this time.

In the release, Regeneron said the only approvability issue is related to the enrollment status of the confirmatory trials. The letters did not identify issues with the odronextamab clinical efficacy or safety, trial design, labeling, or manufacturing.

“While we acknowledge the general concerns that FDA has about sponsors failing to complete their postmarketing confirmatory trials, the relevant laws and regulatory guidances do not lay out rigid criteria for assessing whether the progress on a confirmatory trial is adequate to allow for an accelerated approval,” Tammy Allen, Regeneron’s director for product and pipeline communications, said in an email. “ And to our knowledge, this is the first time the FDA has issued a CRL for this reason.”

There has been rising concern in recent years about the gap between initial accelerated approvals for medicines and the completion of studies that show whether these promising therapies actually help patients live longer or better. Thus, a serious knowledge gap arises, often for many years, while patients and physicians use drugs with as yet unproven benefit. Recent studies highlighting this knowledge gap include work from Harvard’s Program on Regulation, Therapeutics, and Law (PORTAL) group and researchers at the University of Pennsylvania.

While Congress has long sought to speed approvals of new drugs, in 2022 lawmakers gave the FDA more clout for efforts to shorten the period of uncertainty between accelerated and traditional approval. Congress added a provision to a large spending package that said the federal government could require a study or studies to be underway prior to approval, or within a specified time period after the date of approval, of the applicable product.

“As this is new territory for us and for industry, we’re committed to working closely with them to address and plan on sharing updates on enrollment and regulatory timelines later this year,” Ms. Allen said.

The FDA generally does not comment on applications under review. In response to a question about Regeneron’s statements, an FDA spokeswoman pointed out by email that the 2022 law had made clear how the agency can decline approval if confirmatory clinical trials are not considered underway prior to approval.

Odronextamab is potentially part of a rapidly advancing field of lymphoma treatments, which include autologous chimeric antigen receptor (CAR T-cell) therapy in certain settings. There are severe constraints, though, on CAR-T therapy, including manufacturing delays and treatment-related toxicities. Odronextamab is part of what are called “off-the-shelf” drugs with the same aim as CAR-T. The bispecific antibodies (BsAb) are meant to teach the immune system to fight cancer.

Regeneron said it has been actively enrolling patients in multiple phase 3 trials for odronextamab as part of its OLYMPIA program. The company said this is intended to change the treatment paradigm of several B-cell non-Hodgkin lymphoma subtypes, including in earlier lines of therapy.

Enrollment in the dose-finding portion has begun, but the CRLs indicate that the confirmatory portions of these trials should be underway and that the timelines to completion should be agreed on prior to resubmission, Regeneron said. The company added that it is working closely with the FDA and investigators to bring odronextamab to patients with R/R FL and R/R DLBCL as quickly as possible. The company plans to share updates on enrollment and regulatory timelines later this year.

The European Medicines Agency (EMA) has granted a marketing authorization to Novartis Europharm for Fabhalta (iptacopan) for treating adults with paroxysmal nocturnal hemoglobinuria (PNH) who have hemolytic anemia.

The decision was hailed as a first step toward enabling patient access in European Union countries following a March 21 meeting of the Committee for Medicinal Products for Human Use (CHMP).

PNH is a rare, debilitating, and potentially life-threatening genetic disorder that causes hemolytic anemia. Symptoms of the disease include fatigue, body pain, blood clots, bleeding, and shortness of breath. The standard treatment is anti-C5 monoclonal antibodies (eculizumab or ravulizumab) via subcutaneous or intravenous infusion. However, a minority of patients with PNH who are treated with these complement inhibitors encounter residual hemolytic anemia and require red blood cell transfusions.

The active substance of Fabhalta is iptacopan, a proximal complement inhibitor. Iptacopan targets factor B to selectively inhibit the alternative complement pathway and control both C3-mediated extravascular hemolysis and terminal complement-mediated intravascular hemolysis.

Superior Results in Phase 3 Trials

The decision to grant a marketing authorization was taken following a review of two phase 3 trials. The main study was a randomized, open-label, active comparator trial involving 97 patients with PNH who had residual anemia despite receiving treatment with anti-C5 monoclonal antibodies for the previous 6 months. Of the trial participants, 62 received iptacopan monotherapy and 35 continued their anti-C5 regimen for 24 weeks.

Treatment with Fabhalta was found to be significantly superior to the anti-C5 regimen, with 51 of 60 patients who could be evaluated achieving hemoglobin improvement (≥ 2 g/dL) and 42 achieving sustained hemoglobin levels (≥ 12 g/dL) without transfusion, compared with no patients who continued treatment with anti-C5 monoclonal antibodies. Also, 59 of 62 patients treated with Fabhalta did not require blood transfusions between day 14 and day 168, compared with 14 of 35 patients in the anti-C5 group.

The second trial was a single-arm study involving 40 PNH patients who had not previously been treated with a complement inhibitor. Following treatment with Fabhalta, 31 of 33 patients who could be evaluated achieved hemoglobin improvement (≥ 2 g/dL) at week 24, whereas 19 achieved sustained hemoglobin levels (≥ 12 g/dL) without transfusion.

The most common side effects of Fabhalta are upper respiratory tract infection, headache, and diarrhea.

The CHMP stressed that Fabhalta should be prescribed by physicians who are experienced in the management of patients with hematologic disorders.

Fabhalta was supported through the EMA’s Priority Medicines (PRIME) scheme, which provides regulatory support for promising medicines with the potential to address unmet medical needs. The CHMP’s recommendation has been sent to the European Commission for a final decision.

Novartis said in a company statement on March 22 that, if approved, Fabhalta would be the first oral monotherapy available to PNH patients in Europe.

A version of this article appeared on Medscape.com.

The European Medicines Agency (EMA) has granted a marketing authorization to Novartis Europharm for Fabhalta (iptacopan) for treating adults with paroxysmal nocturnal hemoglobinuria (PNH) who have hemolytic anemia.

The decision was hailed as a first step toward enabling patient access in European Union countries following a March 21 meeting of the Committee for Medicinal Products for Human Use (CHMP).

PNH is a rare, debilitating, and potentially life-threatening genetic disorder that causes hemolytic anemia. Symptoms of the disease include fatigue, body pain, blood clots, bleeding, and shortness of breath. The standard treatment is anti-C5 monoclonal antibodies (eculizumab or ravulizumab) via subcutaneous or intravenous infusion. However, a minority of patients with PNH who are treated with these complement inhibitors encounter residual hemolytic anemia and require red blood cell transfusions.

The active substance of Fabhalta is iptacopan, a proximal complement inhibitor. Iptacopan targets factor B to selectively inhibit the alternative complement pathway and control both C3-mediated extravascular hemolysis and terminal complement-mediated intravascular hemolysis.

Superior Results in Phase 3 Trials

The decision to grant a marketing authorization was taken following a review of two phase 3 trials. The main study was a randomized, open-label, active comparator trial involving 97 patients with PNH who had residual anemia despite receiving treatment with anti-C5 monoclonal antibodies for the previous 6 months. Of the trial participants, 62 received iptacopan monotherapy and 35 continued their anti-C5 regimen for 24 weeks.

Treatment with Fabhalta was found to be significantly superior to the anti-C5 regimen, with 51 of 60 patients who could be evaluated achieving hemoglobin improvement (≥ 2 g/dL) and 42 achieving sustained hemoglobin levels (≥ 12 g/dL) without transfusion, compared with no patients who continued treatment with anti-C5 monoclonal antibodies. Also, 59 of 62 patients treated with Fabhalta did not require blood transfusions between day 14 and day 168, compared with 14 of 35 patients in the anti-C5 group.

The second trial was a single-arm study involving 40 PNH patients who had not previously been treated with a complement inhibitor. Following treatment with Fabhalta, 31 of 33 patients who could be evaluated achieved hemoglobin improvement (≥ 2 g/dL) at week 24, whereas 19 achieved sustained hemoglobin levels (≥ 12 g/dL) without transfusion.

The most common side effects of Fabhalta are upper respiratory tract infection, headache, and diarrhea.

The CHMP stressed that Fabhalta should be prescribed by physicians who are experienced in the management of patients with hematologic disorders.

Fabhalta was supported through the EMA’s Priority Medicines (PRIME) scheme, which provides regulatory support for promising medicines with the potential to address unmet medical needs. The CHMP’s recommendation has been sent to the European Commission for a final decision.

Novartis said in a company statement on March 22 that, if approved, Fabhalta would be the first oral monotherapy available to PNH patients in Europe.

A version of this article appeared on Medscape.com.

The European Medicines Agency (EMA) has granted a marketing authorization to Novartis Europharm for Fabhalta (iptacopan) for treating adults with paroxysmal nocturnal hemoglobinuria (PNH) who have hemolytic anemia.

The decision was hailed as a first step toward enabling patient access in European Union countries following a March 21 meeting of the Committee for Medicinal Products for Human Use (CHMP).

PNH is a rare, debilitating, and potentially life-threatening genetic disorder that causes hemolytic anemia. Symptoms of the disease include fatigue, body pain, blood clots, bleeding, and shortness of breath. The standard treatment is anti-C5 monoclonal antibodies (eculizumab or ravulizumab) via subcutaneous or intravenous infusion. However, a minority of patients with PNH who are treated with these complement inhibitors encounter residual hemolytic anemia and require red blood cell transfusions.

The active substance of Fabhalta is iptacopan, a proximal complement inhibitor. Iptacopan targets factor B to selectively inhibit the alternative complement pathway and control both C3-mediated extravascular hemolysis and terminal complement-mediated intravascular hemolysis.

Superior Results in Phase 3 Trials

The decision to grant a marketing authorization was taken following a review of two phase 3 trials. The main study was a randomized, open-label, active comparator trial involving 97 patients with PNH who had residual anemia despite receiving treatment with anti-C5 monoclonal antibodies for the previous 6 months. Of the trial participants, 62 received iptacopan monotherapy and 35 continued their anti-C5 regimen for 24 weeks.

Treatment with Fabhalta was found to be significantly superior to the anti-C5 regimen, with 51 of 60 patients who could be evaluated achieving hemoglobin improvement (≥ 2 g/dL) and 42 achieving sustained hemoglobin levels (≥ 12 g/dL) without transfusion, compared with no patients who continued treatment with anti-C5 monoclonal antibodies. Also, 59 of 62 patients treated with Fabhalta did not require blood transfusions between day 14 and day 168, compared with 14 of 35 patients in the anti-C5 group.

The second trial was a single-arm study involving 40 PNH patients who had not previously been treated with a complement inhibitor. Following treatment with Fabhalta, 31 of 33 patients who could be evaluated achieved hemoglobin improvement (≥ 2 g/dL) at week 24, whereas 19 achieved sustained hemoglobin levels (≥ 12 g/dL) without transfusion.

The most common side effects of Fabhalta are upper respiratory tract infection, headache, and diarrhea.

The CHMP stressed that Fabhalta should be prescribed by physicians who are experienced in the management of patients with hematologic disorders.

Fabhalta was supported through the EMA’s Priority Medicines (PRIME) scheme, which provides regulatory support for promising medicines with the potential to address unmet medical needs. The CHMP’s recommendation has been sent to the European Commission for a final decision.

Novartis said in a company statement on March 22 that, if approved, Fabhalta would be the first oral monotherapy available to PNH patients in Europe.

A version of this article appeared on Medscape.com.

The Food and Drug Administration (FDA) has approved spesolimab-sbzo, an interleukin (IL)-36 receptor antagonist, for the treatment of generalized pustular psoriasis (GPP) in adults and in pediatric patients aged ≥ 12 years who weigh ≥ 40 kg, according to an announcement from the manufacturer. 

This is an expanded indication for spesolimab-sbzo, first approved in September 2022 for treating GPP flares. Developed by Boehringer Ingelheim and marketed under the name Spevigo, the product is an injectable antibody that blocks the IL-36 receptor, a key part of the pathway shown to be involved in the cause of GPP, which is rare and is a potentially-life-threatening disease.

According to a press release from the company, the FDA’s approval of the expanded indication was based on the results of a 48-week clinical trial of 123 patients (Effisayil 2), which showed that individuals who received spesolimab experienced a significant 84% reduction in GPP flares compared with those who received placebo. Among 30 study participants who received a high treatment dose, no flares were observed after week 4. Among all patients who received spesolimab-sbzo, treatment was associated with an increased incidence (defined as ≥ 9 cases per 100 patient-years) of injection site reactions, urinary tract infections, arthralgia, and pruritus compared with placebo. 

Spesolimab-sbzo is currently available in 48 countries, according to the Boehringer Ingelheim release, which states that the approval makes it the first targeted therapy that is available for the acute and chronic treatment of patients with GPP.

A version of this article appeared on Medscape.com.

The Food and Drug Administration (FDA) has approved spesolimab-sbzo, an interleukin (IL)-36 receptor antagonist, for the treatment of generalized pustular psoriasis (GPP) in adults and in pediatric patients aged ≥ 12 years who weigh ≥ 40 kg, according to an announcement from the manufacturer. 

This is an expanded indication for spesolimab-sbzo, first approved in September 2022 for treating GPP flares. Developed by Boehringer Ingelheim and marketed under the name Spevigo, the product is an injectable antibody that blocks the IL-36 receptor, a key part of the pathway shown to be involved in the cause of GPP, which is rare and is a potentially-life-threatening disease.

According to a press release from the company, the FDA’s approval of the expanded indication was based on the results of a 48-week clinical trial of 123 patients (Effisayil 2), which showed that individuals who received spesolimab experienced a significant 84% reduction in GPP flares compared with those who received placebo. Among 30 study participants who received a high treatment dose, no flares were observed after week 4. Among all patients who received spesolimab-sbzo, treatment was associated with an increased incidence (defined as ≥ 9 cases per 100 patient-years) of injection site reactions, urinary tract infections, arthralgia, and pruritus compared with placebo. 

Spesolimab-sbzo is currently available in 48 countries, according to the Boehringer Ingelheim release, which states that the approval makes it the first targeted therapy that is available for the acute and chronic treatment of patients with GPP.

A version of this article appeared on Medscape.com.

The Food and Drug Administration (FDA) has approved spesolimab-sbzo, an interleukin (IL)-36 receptor antagonist, for the treatment of generalized pustular psoriasis (GPP) in adults and in pediatric patients aged ≥ 12 years who weigh ≥ 40 kg, according to an announcement from the manufacturer. 

This is an expanded indication for spesolimab-sbzo, first approved in September 2022 for treating GPP flares. Developed by Boehringer Ingelheim and marketed under the name Spevigo, the product is an injectable antibody that blocks the IL-36 receptor, a key part of the pathway shown to be involved in the cause of GPP, which is rare and is a potentially-life-threatening disease.

According to a press release from the company, the FDA’s approval of the expanded indication was based on the results of a 48-week clinical trial of 123 patients (Effisayil 2), which showed that individuals who received spesolimab experienced a significant 84% reduction in GPP flares compared with those who received placebo. Among 30 study participants who received a high treatment dose, no flares were observed after week 4. Among all patients who received spesolimab-sbzo, treatment was associated with an increased incidence (defined as ≥ 9 cases per 100 patient-years) of injection site reactions, urinary tract infections, arthralgia, and pruritus compared with placebo. 

Spesolimab-sbzo is currently available in 48 countries, according to the Boehringer Ingelheim release, which states that the approval makes it the first targeted therapy that is available for the acute and chronic treatment of patients with GPP.

A version of this article appeared on Medscape.com.

TOPLINE:

Secondary cancers were flagged in 4.3% of all adverse event reports among patients who received CAR T therapy, with T-cell malignancies comprising only 0.15% of the total reports and 3.54% of all second primary malignancies, according to an analysis of adverse event reports submitted to the US Food and Drug Administration (FDA).

METHODOLOGY:

• In November 2023, the FDA announced its investigation into whether chimeric antigen receptor (CAR) T-cell immunotherapies can cause secondary blood cancers, specifically T-cell malignancies. At the time, the agency said: “Although the overall benefits of these products continue to outweigh their potential risks for their approved uses, FDA is investigating the identified risk of T-cell malignancy with serious outcomes.”
• In January 2024, the FDA issued boxed warnings on the six approved CART cell therapies, citing the possibility of second primary malignancies, including CAR-positive lymphomas, in patients who had received a CAR T agent.
• To evaluate the extent of these secondary cancers, researchers analyzed the FDA Adverse Event Reporting System database for CAR T-cell reports citing second primary malignancies.

TAKEAWAY:

• Overall, the authors identified 12,394 unique adverse events associated with CAR T therapy; of these, 536 adverse events (4.3%) were second primary malignancies.
• Axicabtagene ciloleucel (axi-cel) and tisagenlecleucel (tis-cel) accounted for most of the second primary malignancies reports — 51.7% (277 of 536 patients) for axi-cel and 33% (177 of 536 patients) for tis-cel.
• The researchers identified 19 cases of T-cell malignancies, representing only 0.15% of all unique adverse events and 3.54% of all second primary malignancies (19 of 536 patients); 17 of these cases were T-cell non-Hodgkin lymphomas, and two were T-cell large granular lymphocytic leukemia.
• Among the reported 536 second primary malignancies, the most frequent cancers were leukemias (333 reports, or 62%), followed by skin neoplasms (54 reports, or 10.1%), hematopoietic neoplasms excluding leukemias and lymphomas (26 reports, 4.85%), nervous system tumors (21 reports, 3.92%), and respiratory neoplasms (20 reports, 3.73%).

IN PRACTICE:

“We will continue to monitor the data released by the FDA to learn more about CAR T-associated risks. However, it’s crucial to stress that the benefits of CAR T-cell therapies still outweigh the risks for the approved indications,” Magdi Elsallab, MD, the study’s co-lead author, said in a news release.

SOURCE:

This work, led by Dr. Elsallab from Harvard Medical School in Boston, was published online on March 14 in Blood.

LIMITATIONS:

The limitations of the analysis include the presence of duplicate report submissions, incomplete data, difficulty establishing causal relationships, and the potential for both underreporting and overreporting based on the severity of adverse events. Furthermore, without the total number of prescribed products, it was difficult to determine the adverse event frequency.

DISCLOSURES:

The study funding source was not disclosed. Some of the authors reported financial ties with various organizations outside this work, including Bristol Myers Squibb, Janssen Biotech, Johnson & Johnson, Kite Pharma, and Novartis.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Secondary cancers were flagged in 4.3% of all adverse event reports among patients who received CAR T therapy, with T-cell malignancies comprising only 0.15% of the total reports and 3.54% of all second primary malignancies, according to an analysis of adverse event reports submitted to the US Food and Drug Administration (FDA).

METHODOLOGY:

• In November 2023, the FDA announced its investigation into whether chimeric antigen receptor (CAR) T-cell immunotherapies can cause secondary blood cancers, specifically T-cell malignancies. At the time, the agency said: “Although the overall benefits of these products continue to outweigh their potential risks for their approved uses, FDA is investigating the identified risk of T-cell malignancy with serious outcomes.”
• In January 2024, the FDA issued boxed warnings on the six approved CART cell therapies, citing the possibility of second primary malignancies, including CAR-positive lymphomas, in patients who had received a CAR T agent.
• To evaluate the extent of these secondary cancers, researchers analyzed the FDA Adverse Event Reporting System database for CAR T-cell reports citing second primary malignancies.

TAKEAWAY:

• Overall, the authors identified 12,394 unique adverse events associated with CAR T therapy; of these, 536 adverse events (4.3%) were second primary malignancies.
• Axicabtagene ciloleucel (axi-cel) and tisagenlecleucel (tis-cel) accounted for most of the second primary malignancies reports — 51.7% (277 of 536 patients) for axi-cel and 33% (177 of 536 patients) for tis-cel.
• The researchers identified 19 cases of T-cell malignancies, representing only 0.15% of all unique adverse events and 3.54% of all second primary malignancies (19 of 536 patients); 17 of these cases were T-cell non-Hodgkin lymphomas, and two were T-cell large granular lymphocytic leukemia.
• Among the reported 536 second primary malignancies, the most frequent cancers were leukemias (333 reports, or 62%), followed by skin neoplasms (54 reports, or 10.1%), hematopoietic neoplasms excluding leukemias and lymphomas (26 reports, 4.85%), nervous system tumors (21 reports, 3.92%), and respiratory neoplasms (20 reports, 3.73%).

IN PRACTICE:

“We will continue to monitor the data released by the FDA to learn more about CAR T-associated risks. However, it’s crucial to stress that the benefits of CAR T-cell therapies still outweigh the risks for the approved indications,” Magdi Elsallab, MD, the study’s co-lead author, said in a news release.

SOURCE:

This work, led by Dr. Elsallab from Harvard Medical School in Boston, was published online on March 14 in Blood.

LIMITATIONS:

The limitations of the analysis include the presence of duplicate report submissions, incomplete data, difficulty establishing causal relationships, and the potential for both underreporting and overreporting based on the severity of adverse events. Furthermore, without the total number of prescribed products, it was difficult to determine the adverse event frequency.

DISCLOSURES:

The study funding source was not disclosed. Some of the authors reported financial ties with various organizations outside this work, including Bristol Myers Squibb, Janssen Biotech, Johnson & Johnson, Kite Pharma, and Novartis.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Secondary cancers were flagged in 4.3% of all adverse event reports among patients who received CAR T therapy, with T-cell malignancies comprising only 0.15% of the total reports and 3.54% of all second primary malignancies, according to an analysis of adverse event reports submitted to the US Food and Drug Administration (FDA).

METHODOLOGY:

• In November 2023, the FDA announced its investigation into whether chimeric antigen receptor (CAR) T-cell immunotherapies can cause secondary blood cancers, specifically T-cell malignancies. At the time, the agency said: “Although the overall benefits of these products continue to outweigh their potential risks for their approved uses, FDA is investigating the identified risk of T-cell malignancy with serious outcomes.”
• In January 2024, the FDA issued boxed warnings on the six approved CART cell therapies, citing the possibility of second primary malignancies, including CAR-positive lymphomas, in patients who had received a CAR T agent.
• To evaluate the extent of these secondary cancers, researchers analyzed the FDA Adverse Event Reporting System database for CAR T-cell reports citing second primary malignancies.

TAKEAWAY:

• Overall, the authors identified 12,394 unique adverse events associated with CAR T therapy; of these, 536 adverse events (4.3%) were second primary malignancies.
• Axicabtagene ciloleucel (axi-cel) and tisagenlecleucel (tis-cel) accounted for most of the second primary malignancies reports — 51.7% (277 of 536 patients) for axi-cel and 33% (177 of 536 patients) for tis-cel.
• The researchers identified 19 cases of T-cell malignancies, representing only 0.15% of all unique adverse events and 3.54% of all second primary malignancies (19 of 536 patients); 17 of these cases were T-cell non-Hodgkin lymphomas, and two were T-cell large granular lymphocytic leukemia.
• Among the reported 536 second primary malignancies, the most frequent cancers were leukemias (333 reports, or 62%), followed by skin neoplasms (54 reports, or 10.1%), hematopoietic neoplasms excluding leukemias and lymphomas (26 reports, 4.85%), nervous system tumors (21 reports, 3.92%), and respiratory neoplasms (20 reports, 3.73%).

IN PRACTICE:

“We will continue to monitor the data released by the FDA to learn more about CAR T-associated risks. However, it’s crucial to stress that the benefits of CAR T-cell therapies still outweigh the risks for the approved indications,” Magdi Elsallab, MD, the study’s co-lead author, said in a news release.

SOURCE:

This work, led by Dr. Elsallab from Harvard Medical School in Boston, was published online on March 14 in Blood.

LIMITATIONS:

The limitations of the analysis include the presence of duplicate report submissions, incomplete data, difficulty establishing causal relationships, and the potential for both underreporting and overreporting based on the severity of adverse events. Furthermore, without the total number of prescribed products, it was difficult to determine the adverse event frequency.

DISCLOSURES:

The study funding source was not disclosed. Some of the authors reported financial ties with various organizations outside this work, including Bristol Myers Squibb, Janssen Biotech, Johnson & Johnson, Kite Pharma, and Novartis.
 

A version of this article appeared on Medscape.com.