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Cancer screening stopped by pandemic: Repercussions to come?
Last year, cancer screening programs around the world ground to a halt as SARS-CoV-2 infection rates surged globally. The effect of this slowdown is now becoming clear.
Thousands of cancer diagnoses are “missing,” and oncologists worry that this will lead to more advanced cancers and higher mortality for years to come.
“I feel like this is an earthquake that’s rocked our health care system. My guess is that you’ll probably still see repercussions of this over the next couple of years at least,” said Sharon Chang, MD, an attending surgical oncologist in the Permanente Medical Group, Fremont, Calif.
She was senior author of a study that analyzed the effects of the slowdown in mammography screening as a result of California’s “shelter-in-place” order on March 17, 2020. In the 2 months that followed, there were 64% fewer breast cancer diagnoses at 21 Kaiser Permanente medical centers, compared with the same period in 2019 (250 vs. 703).
In effect, approximately 450 breast cancer patients had “disappeared,” said coauthor Annie Tang, MD, a research fellow at the University of California, San Francisco, East Bay surgery program.
“What surprised me most from our data was the sheer number of breast cancer patients that were missing,” Dr. Tang said in an interview.
A similar picture has emerged elsewhere.
In Boston, an estimated 1,438 cancerous and precancerous lesions “went missing” during the first 3 months of pandemic shutdown, according to a study from the Massachusetts General Brigham health care system.
In this study, the investigators assessed screening rates for five cancers – breast cancer (mammography), prostate cancer (prostate-specific antigen testing), colorectal cancer (colonoscopy), cervical cancer (Papanicolaou tests), and lung cancer (low-dose CT).
Screening rates during the first peak of the pandemic (March 2 to June 2, 2020) were compared with those during the preceding and following 3 months and during the same 3 months in 2019.
The results showed a pronounced drop in screening rates during the peak pandemic period, compared with the three control periods. Decreases occurred for all screening tests and ranged from –60% to –82%.
There were also significant decreases in cancer diagnoses resulting from the decreases in screening tests, ranging from –19% to –78%.
“Quantifying the actual problem made us realize how much work needs to be done to get us back to prepandemic numbers,” said senior author Quoc-Dien Trinh, MD, FACS, codirector of the Dana Farber/Brigham and Women’s prostate cancer program.
In the Canadian province of Alberta, a similar decrease in cancer diagnoses occurred during the early days of the pandemic.
By the end of 2020, Alberta was “missing” approximately 2,000 cases of invasive cancers and 1,000 cases of noninvasive cancers, Doug Stewart, MD, senior medical director at the Cancer Strategic Clinical Network (SCN) of Alberta Health Services, told this news organization.
Dr. Stewart is able to track cancer diagnoses in Alberta almost in real time through a mandatory cancer registry. Within a month of shutdown, there was a 30% decrease in diagnoses of invasive cancers and a 50% decrease “in the kind of preinvasive cancers that, for the most part, are picked up by screening programs,” said Dr. Stewart.
After the health care system opened up again in the summer, Stewart said, noninvasive cancer diagnoses continued to be 20% lower than expected. There was a 10% shortfall in invasive cancer diagnoses.
The number of diagnoses had returned to normal by December 2020. However, Dr. Stewart is worried that this fact conceals a terrible truth.
The worry is over the backlog. Although the number of diagnoses is now similar to what it was before the pandemic, “people are presenting later, and maybe the cancer is more advanced,” he speculated.
His team at Alberta Health Services is assessing whether the cancers that are being diagnosed now are more advanced. Initial results are anticipated by late April 2021.
In the United Kingdom, there was a similar halt in cancer screening as a result of the country’s lockdown. Researchers now predict an uptick in cancer diagnoses.
Ajay Aggarwal, MD, PhD, consultant clinical oncologist and associate professor at the London School of Hygiene and Tropical Medicine, and colleagues have estimated that at least 3,500 deaths from breast, colorectal, esophageal, and lung cancer will occur during the next 5 years in England that could have been avoided had it not been for the lockdown measures necessitated by the pandemic.
Speaking to this news organization, Dr. Aggarwal warned that these numbers, which are from a modeling study published in August 2020, are “extremely conservative,” because the investigators considered diagnostic delays over only a 3-month period, the analysis involved only four cancers, and it did not reflect deferral of cancer treatment.
“It felt like it was the tip of the iceberg,” Dr. Aggarwal said. He warns that more recent data suggest that “diagnostic delays are probably worse than we predicted.”
He suspects that there is more at play than screening cancellations.
In another study conducted in the United Kingdom, data show “a falling edge of referrals” from primary care to cancer centers early in the pandemic. In that study, investigators analyzed real-time weekly hospital data from eight large British hospitals and found that urgent cancer referrals fell 70% at their lowest point.
“It really surprised me that the urgent referrals dropped so drastically,” said lead author Alvina Lai, PhD, a lecturer in health data analytics at University College London.
She attributed this in part to patients’ adherence to lockdown rules. “Patients are trying to follow government guidelines to stay home and not go to [general practitioners] unless necessary,” Dr. Lai explained in an interview.
Canada, like the United Kingdom, has a publicly funded health care system. Dr. Stewart came to a similar conclusion. “Some patients who have been diagnosed with cancer ... have told me it took them an extra couple of months to even contact the family doc, because they ... didn’t want to bother the family doctor with something that wasn’t COVID, this kind of guilt. They want to do something good for society. You know, most people are just really nice people, and they don’t want to bother the health care system if they don’t have COVID,” Dr. Stewart said.
Shelley Fuld Nasso, CEO of the National Coalition for Cancer Survivorship, a nonprofit organization based in Silver Spring, Md., agreed that screening shutdowns are not the only danger. “While we agree that screening is really important, we also want to make sure patients are following up with their physicians about symptoms that they have,” she said.
“Some of the speculation or concern about increased mortality for cancer is related to screening, but some of it is related to delayed diagnosis because of not following up on symptoms. ... What concerns me is not everyone has that ability or willingness to advocate for themselves,” she said.
Speaking at a press briefing held by the American Society for Radiation Oncology on March 30, Dr. Nasso related a case involving a patient who experienced severe arm pain. In a teleconsultation with her primary care physician, her condition was diagnosed as arthritis. She was subsequently diagnosed in the ED as having multiple myeloma.
Patients who “feel fine” may postpone their checkups to avoid going to the hospital and risking exposure to COVID-19.
“Some patients are still hesitant about returning for their mammograms or coming in if they feel a breast lump,” Dr. Tang said. “That fear of COVID-19 is still out there, and we don’t know how long patients are going to delay.”
In London, Dr. Aggarwal saw a similar response to the pandemic. “People were overestimating quite significantly what their risk of death was from acquiring COVID-19, and I think that balance was never [redressed] explicitly,” he said.
Public health initiatives to rebalance the messaging are now underway.
Public Health England and National Health Service England launched their Help Us Help You campaign in October 2020. The public information campaign urges people to speak to their doctors if they were “worried about a symptom that could be cancer.”
In Canada, the provincial government in Alberta has launched a public awareness campaign that conveys the message, “cancer has not gone away.”
“Cancer is still the No. 1 cause of potential life-years lost, despite COVID,” Dr. Stewart said. “We need to do what we can to make sure there’s no slippage in survival rates.”
Dr. Tang, Dr. Chang, Dr. Lai, Dr. Stewart, and Dr. Aggarwal have disclosed no relevant financial relationship. Dr. Trinh has received personal fees from Astellas, Bayer, and Janssen and grants from Intuitive Surgical.
A version of this article first appeared on Medscape.com.
Last year, cancer screening programs around the world ground to a halt as SARS-CoV-2 infection rates surged globally. The effect of this slowdown is now becoming clear.
Thousands of cancer diagnoses are “missing,” and oncologists worry that this will lead to more advanced cancers and higher mortality for years to come.
“I feel like this is an earthquake that’s rocked our health care system. My guess is that you’ll probably still see repercussions of this over the next couple of years at least,” said Sharon Chang, MD, an attending surgical oncologist in the Permanente Medical Group, Fremont, Calif.
She was senior author of a study that analyzed the effects of the slowdown in mammography screening as a result of California’s “shelter-in-place” order on March 17, 2020. In the 2 months that followed, there were 64% fewer breast cancer diagnoses at 21 Kaiser Permanente medical centers, compared with the same period in 2019 (250 vs. 703).
In effect, approximately 450 breast cancer patients had “disappeared,” said coauthor Annie Tang, MD, a research fellow at the University of California, San Francisco, East Bay surgery program.
“What surprised me most from our data was the sheer number of breast cancer patients that were missing,” Dr. Tang said in an interview.
A similar picture has emerged elsewhere.
In Boston, an estimated 1,438 cancerous and precancerous lesions “went missing” during the first 3 months of pandemic shutdown, according to a study from the Massachusetts General Brigham health care system.
In this study, the investigators assessed screening rates for five cancers – breast cancer (mammography), prostate cancer (prostate-specific antigen testing), colorectal cancer (colonoscopy), cervical cancer (Papanicolaou tests), and lung cancer (low-dose CT).
Screening rates during the first peak of the pandemic (March 2 to June 2, 2020) were compared with those during the preceding and following 3 months and during the same 3 months in 2019.
The results showed a pronounced drop in screening rates during the peak pandemic period, compared with the three control periods. Decreases occurred for all screening tests and ranged from –60% to –82%.
There were also significant decreases in cancer diagnoses resulting from the decreases in screening tests, ranging from –19% to –78%.
“Quantifying the actual problem made us realize how much work needs to be done to get us back to prepandemic numbers,” said senior author Quoc-Dien Trinh, MD, FACS, codirector of the Dana Farber/Brigham and Women’s prostate cancer program.
In the Canadian province of Alberta, a similar decrease in cancer diagnoses occurred during the early days of the pandemic.
By the end of 2020, Alberta was “missing” approximately 2,000 cases of invasive cancers and 1,000 cases of noninvasive cancers, Doug Stewart, MD, senior medical director at the Cancer Strategic Clinical Network (SCN) of Alberta Health Services, told this news organization.
Dr. Stewart is able to track cancer diagnoses in Alberta almost in real time through a mandatory cancer registry. Within a month of shutdown, there was a 30% decrease in diagnoses of invasive cancers and a 50% decrease “in the kind of preinvasive cancers that, for the most part, are picked up by screening programs,” said Dr. Stewart.
After the health care system opened up again in the summer, Stewart said, noninvasive cancer diagnoses continued to be 20% lower than expected. There was a 10% shortfall in invasive cancer diagnoses.
The number of diagnoses had returned to normal by December 2020. However, Dr. Stewart is worried that this fact conceals a terrible truth.
The worry is over the backlog. Although the number of diagnoses is now similar to what it was before the pandemic, “people are presenting later, and maybe the cancer is more advanced,” he speculated.
His team at Alberta Health Services is assessing whether the cancers that are being diagnosed now are more advanced. Initial results are anticipated by late April 2021.
In the United Kingdom, there was a similar halt in cancer screening as a result of the country’s lockdown. Researchers now predict an uptick in cancer diagnoses.
Ajay Aggarwal, MD, PhD, consultant clinical oncologist and associate professor at the London School of Hygiene and Tropical Medicine, and colleagues have estimated that at least 3,500 deaths from breast, colorectal, esophageal, and lung cancer will occur during the next 5 years in England that could have been avoided had it not been for the lockdown measures necessitated by the pandemic.
Speaking to this news organization, Dr. Aggarwal warned that these numbers, which are from a modeling study published in August 2020, are “extremely conservative,” because the investigators considered diagnostic delays over only a 3-month period, the analysis involved only four cancers, and it did not reflect deferral of cancer treatment.
“It felt like it was the tip of the iceberg,” Dr. Aggarwal said. He warns that more recent data suggest that “diagnostic delays are probably worse than we predicted.”
He suspects that there is more at play than screening cancellations.
In another study conducted in the United Kingdom, data show “a falling edge of referrals” from primary care to cancer centers early in the pandemic. In that study, investigators analyzed real-time weekly hospital data from eight large British hospitals and found that urgent cancer referrals fell 70% at their lowest point.
“It really surprised me that the urgent referrals dropped so drastically,” said lead author Alvina Lai, PhD, a lecturer in health data analytics at University College London.
She attributed this in part to patients’ adherence to lockdown rules. “Patients are trying to follow government guidelines to stay home and not go to [general practitioners] unless necessary,” Dr. Lai explained in an interview.
Canada, like the United Kingdom, has a publicly funded health care system. Dr. Stewart came to a similar conclusion. “Some patients who have been diagnosed with cancer ... have told me it took them an extra couple of months to even contact the family doc, because they ... didn’t want to bother the family doctor with something that wasn’t COVID, this kind of guilt. They want to do something good for society. You know, most people are just really nice people, and they don’t want to bother the health care system if they don’t have COVID,” Dr. Stewart said.
Shelley Fuld Nasso, CEO of the National Coalition for Cancer Survivorship, a nonprofit organization based in Silver Spring, Md., agreed that screening shutdowns are not the only danger. “While we agree that screening is really important, we also want to make sure patients are following up with their physicians about symptoms that they have,” she said.
“Some of the speculation or concern about increased mortality for cancer is related to screening, but some of it is related to delayed diagnosis because of not following up on symptoms. ... What concerns me is not everyone has that ability or willingness to advocate for themselves,” she said.
Speaking at a press briefing held by the American Society for Radiation Oncology on March 30, Dr. Nasso related a case involving a patient who experienced severe arm pain. In a teleconsultation with her primary care physician, her condition was diagnosed as arthritis. She was subsequently diagnosed in the ED as having multiple myeloma.
Patients who “feel fine” may postpone their checkups to avoid going to the hospital and risking exposure to COVID-19.
“Some patients are still hesitant about returning for their mammograms or coming in if they feel a breast lump,” Dr. Tang said. “That fear of COVID-19 is still out there, and we don’t know how long patients are going to delay.”
In London, Dr. Aggarwal saw a similar response to the pandemic. “People were overestimating quite significantly what their risk of death was from acquiring COVID-19, and I think that balance was never [redressed] explicitly,” he said.
Public health initiatives to rebalance the messaging are now underway.
Public Health England and National Health Service England launched their Help Us Help You campaign in October 2020. The public information campaign urges people to speak to their doctors if they were “worried about a symptom that could be cancer.”
In Canada, the provincial government in Alberta has launched a public awareness campaign that conveys the message, “cancer has not gone away.”
“Cancer is still the No. 1 cause of potential life-years lost, despite COVID,” Dr. Stewart said. “We need to do what we can to make sure there’s no slippage in survival rates.”
Dr. Tang, Dr. Chang, Dr. Lai, Dr. Stewart, and Dr. Aggarwal have disclosed no relevant financial relationship. Dr. Trinh has received personal fees from Astellas, Bayer, and Janssen and grants from Intuitive Surgical.
A version of this article first appeared on Medscape.com.
Last year, cancer screening programs around the world ground to a halt as SARS-CoV-2 infection rates surged globally. The effect of this slowdown is now becoming clear.
Thousands of cancer diagnoses are “missing,” and oncologists worry that this will lead to more advanced cancers and higher mortality for years to come.
“I feel like this is an earthquake that’s rocked our health care system. My guess is that you’ll probably still see repercussions of this over the next couple of years at least,” said Sharon Chang, MD, an attending surgical oncologist in the Permanente Medical Group, Fremont, Calif.
She was senior author of a study that analyzed the effects of the slowdown in mammography screening as a result of California’s “shelter-in-place” order on March 17, 2020. In the 2 months that followed, there were 64% fewer breast cancer diagnoses at 21 Kaiser Permanente medical centers, compared with the same period in 2019 (250 vs. 703).
In effect, approximately 450 breast cancer patients had “disappeared,” said coauthor Annie Tang, MD, a research fellow at the University of California, San Francisco, East Bay surgery program.
“What surprised me most from our data was the sheer number of breast cancer patients that were missing,” Dr. Tang said in an interview.
A similar picture has emerged elsewhere.
In Boston, an estimated 1,438 cancerous and precancerous lesions “went missing” during the first 3 months of pandemic shutdown, according to a study from the Massachusetts General Brigham health care system.
In this study, the investigators assessed screening rates for five cancers – breast cancer (mammography), prostate cancer (prostate-specific antigen testing), colorectal cancer (colonoscopy), cervical cancer (Papanicolaou tests), and lung cancer (low-dose CT).
Screening rates during the first peak of the pandemic (March 2 to June 2, 2020) were compared with those during the preceding and following 3 months and during the same 3 months in 2019.
The results showed a pronounced drop in screening rates during the peak pandemic period, compared with the three control periods. Decreases occurred for all screening tests and ranged from –60% to –82%.
There were also significant decreases in cancer diagnoses resulting from the decreases in screening tests, ranging from –19% to –78%.
“Quantifying the actual problem made us realize how much work needs to be done to get us back to prepandemic numbers,” said senior author Quoc-Dien Trinh, MD, FACS, codirector of the Dana Farber/Brigham and Women’s prostate cancer program.
In the Canadian province of Alberta, a similar decrease in cancer diagnoses occurred during the early days of the pandemic.
By the end of 2020, Alberta was “missing” approximately 2,000 cases of invasive cancers and 1,000 cases of noninvasive cancers, Doug Stewart, MD, senior medical director at the Cancer Strategic Clinical Network (SCN) of Alberta Health Services, told this news organization.
Dr. Stewart is able to track cancer diagnoses in Alberta almost in real time through a mandatory cancer registry. Within a month of shutdown, there was a 30% decrease in diagnoses of invasive cancers and a 50% decrease “in the kind of preinvasive cancers that, for the most part, are picked up by screening programs,” said Dr. Stewart.
After the health care system opened up again in the summer, Stewart said, noninvasive cancer diagnoses continued to be 20% lower than expected. There was a 10% shortfall in invasive cancer diagnoses.
The number of diagnoses had returned to normal by December 2020. However, Dr. Stewart is worried that this fact conceals a terrible truth.
The worry is over the backlog. Although the number of diagnoses is now similar to what it was before the pandemic, “people are presenting later, and maybe the cancer is more advanced,” he speculated.
His team at Alberta Health Services is assessing whether the cancers that are being diagnosed now are more advanced. Initial results are anticipated by late April 2021.
In the United Kingdom, there was a similar halt in cancer screening as a result of the country’s lockdown. Researchers now predict an uptick in cancer diagnoses.
Ajay Aggarwal, MD, PhD, consultant clinical oncologist and associate professor at the London School of Hygiene and Tropical Medicine, and colleagues have estimated that at least 3,500 deaths from breast, colorectal, esophageal, and lung cancer will occur during the next 5 years in England that could have been avoided had it not been for the lockdown measures necessitated by the pandemic.
Speaking to this news organization, Dr. Aggarwal warned that these numbers, which are from a modeling study published in August 2020, are “extremely conservative,” because the investigators considered diagnostic delays over only a 3-month period, the analysis involved only four cancers, and it did not reflect deferral of cancer treatment.
“It felt like it was the tip of the iceberg,” Dr. Aggarwal said. He warns that more recent data suggest that “diagnostic delays are probably worse than we predicted.”
He suspects that there is more at play than screening cancellations.
In another study conducted in the United Kingdom, data show “a falling edge of referrals” from primary care to cancer centers early in the pandemic. In that study, investigators analyzed real-time weekly hospital data from eight large British hospitals and found that urgent cancer referrals fell 70% at their lowest point.
“It really surprised me that the urgent referrals dropped so drastically,” said lead author Alvina Lai, PhD, a lecturer in health data analytics at University College London.
She attributed this in part to patients’ adherence to lockdown rules. “Patients are trying to follow government guidelines to stay home and not go to [general practitioners] unless necessary,” Dr. Lai explained in an interview.
Canada, like the United Kingdom, has a publicly funded health care system. Dr. Stewart came to a similar conclusion. “Some patients who have been diagnosed with cancer ... have told me it took them an extra couple of months to even contact the family doc, because they ... didn’t want to bother the family doctor with something that wasn’t COVID, this kind of guilt. They want to do something good for society. You know, most people are just really nice people, and they don’t want to bother the health care system if they don’t have COVID,” Dr. Stewart said.
Shelley Fuld Nasso, CEO of the National Coalition for Cancer Survivorship, a nonprofit organization based in Silver Spring, Md., agreed that screening shutdowns are not the only danger. “While we agree that screening is really important, we also want to make sure patients are following up with their physicians about symptoms that they have,” she said.
“Some of the speculation or concern about increased mortality for cancer is related to screening, but some of it is related to delayed diagnosis because of not following up on symptoms. ... What concerns me is not everyone has that ability or willingness to advocate for themselves,” she said.
Speaking at a press briefing held by the American Society for Radiation Oncology on March 30, Dr. Nasso related a case involving a patient who experienced severe arm pain. In a teleconsultation with her primary care physician, her condition was diagnosed as arthritis. She was subsequently diagnosed in the ED as having multiple myeloma.
Patients who “feel fine” may postpone their checkups to avoid going to the hospital and risking exposure to COVID-19.
“Some patients are still hesitant about returning for their mammograms or coming in if they feel a breast lump,” Dr. Tang said. “That fear of COVID-19 is still out there, and we don’t know how long patients are going to delay.”
In London, Dr. Aggarwal saw a similar response to the pandemic. “People were overestimating quite significantly what their risk of death was from acquiring COVID-19, and I think that balance was never [redressed] explicitly,” he said.
Public health initiatives to rebalance the messaging are now underway.
Public Health England and National Health Service England launched their Help Us Help You campaign in October 2020. The public information campaign urges people to speak to their doctors if they were “worried about a symptom that could be cancer.”
In Canada, the provincial government in Alberta has launched a public awareness campaign that conveys the message, “cancer has not gone away.”
“Cancer is still the No. 1 cause of potential life-years lost, despite COVID,” Dr. Stewart said. “We need to do what we can to make sure there’s no slippage in survival rates.”
Dr. Tang, Dr. Chang, Dr. Lai, Dr. Stewart, and Dr. Aggarwal have disclosed no relevant financial relationship. Dr. Trinh has received personal fees from Astellas, Bayer, and Janssen and grants from Intuitive Surgical.
A version of this article first appeared on Medscape.com.
Steroids can be stopped in some older multiple myeloma patients
For select older patients, it is safe to switch to a lower dose of lenalidomide maintenance therapy and discontinue dexamethasone after 9 months. The regimen is safe and yields outcomes similar to those of standard, continuous lenalidomide/dexamethasone (Rd), according to new findings.
At a median follow-up of 37 months, event-free survival was 10.4 months in the experimental arm in which dexamethasone therapy was stopped (Rd-R) versus 6.9 months for standard therapy. The tailored approach also resulted in fewer adverse effects.
The authors noted that there was no difference in progression-free survival (PFS) and overall survival between the two groups.
“These results may be useful for the treatment of myeloma patients, since approximately one-third of patients not eligible for stem cell transplantation are intermediate fit, the population in our study,” said lead author Alessandra Larocca, MD, PhD, from the department of hematology-oncology of the University Hospital Città della Salute e della Scienza, Torino, Italy.
She said in an interview that they expect that these findings “may help to optimize the treatment of less-fit elderly patients by reducing the occurrence of adverse events and thus improving outcomes and preserving quality of life of these patients.”
This approach is a viable option for clinicians to consider for some patient subgroups. “This steroid-sparing approach can also be used in other combinations,” she said. “Ongoing trials are now evaluating steroid sparing in combination with monoclonal antibodies or the role of frailty-guided treatment.”
The study was published March 19, 2021, in Blood.
Curtailing steroids
Myeloma patients aged 75 years or older or who have comorbidities and functional impairments are an understudied population. They are more susceptible to adverse events that may negatively affect the duration of treatment and outcomes. Steroids are “scarcely tolerated” in the long term, even among younger patients, and “whether sparing dexamethasone is as effective as prolonged steroid exposure remains an open issue,” the authors wrote. There are still no clear data on the advantage of continuous steroid treatment as opposed to fixed-duration treatment for newly diagnosed patients.
In 2010, a study compared high-dose with low-dose dexamethasone. As expected, the rate of adverse events was lower among patients who received the low-dose steroid, but quite unexpectedly, deaths with high-dose dexamethasone were significantly higher than with low-dose dexamethasone.
The 1-year overall survival was 96% among patients who received the low dose of dexamethasone versus 87% with the standard high dose.
S. Vincent Rajkumar, MD, of the Mayo Clinic, Rochester, Minn., who was the lead author of the 2010 study, spoke with this new organization about the current study. “This is an important and practice-changing study,” he said. “We have already changed our practice and recommendations based on this study.”
He explained that, for transplant-ineligible patients, instead of initial therapy with bortezomib-lenalidomide-dexamethasone followed by Rd, they use lenalidomide alone without steroids.
“After 9 months of initial therapy, I now recommend we stop dexamethasone unless we are having problems controlling the myeloma, such as progressive disease,” Dr. Rajkumar said. “I congratulate the authors on a study that will improve the quality of life for our patients.”
Improved event-free survival
In this study, Dr. Larocca and colleagues investigated the efficacy and feasibility of a dose- and schedule-adjusted Rd regimen that was followed by maintenance Rd-R 10 mg/d and compared the regimen with continuous Rd in elderly, intermediate-fit patients who were newly diagnosed with multiple myeloma.
The primary endpoint was event-free survival, defined as progression/death from any cause, lenalidomide discontinuation, and any hematologic grade 4 or nonhematologic grade 3-4 adverse events.
The cohort consisted of 199 patients who were randomly assigned to receive either Rd-R (n = 101) or continuous Rd (n = 98). The median age was 75 years in the Rd-R arm and 76 years in the Rd arm; 52% of patients in the Rd-R group and 43% in the Rd group were classified as being intermediate fit not for age but for geriatric impairments.
With a median follow-up of 37 months, event-free survival was 10.4 months in the Rd-R arm versus 6.9 months in the Rd arm (hazard ratio, 0.70; P = .02). This benefit was maintained beyond nine cycles (median: 19.8 vs. 10.6 months for Rd-R vs. Rd; HR, 0.55; P = .03)
The median PFS was 20.2 months with Rd-R and 18.3 months with Rd (HR, 0.78; P = .16). The median overall survival was not reached. The 3-year overall survival was 74% with Rd-R and 63% with continuous Rd (HR, 0.62; P = .06). Among patients remaining on therapy after nine cycles, no difference in median PFS was observed between the two groups (24.3 vs. 18.7 months; HR, 0.73; P = .19).
Best response was similar for both groups, with an overall response rate of 78% versus 68% (P = .15). The very good partial response rate was 51% in the Rd-R arm versus 39% in the continuous Rd arm (P = .09).
Toxicities were similar between the two groups. Hematologic adverse events of at least grade 3 were reported in 26% of Rd-R patients versus 20% of Rd patients (P = .40). In both groups, the most frequent grade ≥3 hematologic toxicity was neutropenia (21% vs 18%). The most frequent grade ≥3 toxicities were nonhematologic. They occurred in 33% of Rd-R patients and 43% of Rd patients (P = .15). The most frequent nonhematologic toxicities were infections (10% vs. 12%), constitutional (3% vs. 12%), dermatologic (7% vs. 3%), and central nervous toxicities (2% vs. 6%).
The study was sponsored by Fondazione EMN Italy Onlus. Dr. Larocca has received honoraria from Amgen, Bristol-Myers Squibb, Celgene, Janssen, and GlaxoSmithKline, and has served on the advisory boards for Bristol-Myers Squibb, Celgene, Janssen, and Takeda. Several coauthors also have disclosed relationships with industry. Dr. Rajkumar disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
For select older patients, it is safe to switch to a lower dose of lenalidomide maintenance therapy and discontinue dexamethasone after 9 months. The regimen is safe and yields outcomes similar to those of standard, continuous lenalidomide/dexamethasone (Rd), according to new findings.
At a median follow-up of 37 months, event-free survival was 10.4 months in the experimental arm in which dexamethasone therapy was stopped (Rd-R) versus 6.9 months for standard therapy. The tailored approach also resulted in fewer adverse effects.
The authors noted that there was no difference in progression-free survival (PFS) and overall survival between the two groups.
“These results may be useful for the treatment of myeloma patients, since approximately one-third of patients not eligible for stem cell transplantation are intermediate fit, the population in our study,” said lead author Alessandra Larocca, MD, PhD, from the department of hematology-oncology of the University Hospital Città della Salute e della Scienza, Torino, Italy.
She said in an interview that they expect that these findings “may help to optimize the treatment of less-fit elderly patients by reducing the occurrence of adverse events and thus improving outcomes and preserving quality of life of these patients.”
This approach is a viable option for clinicians to consider for some patient subgroups. “This steroid-sparing approach can also be used in other combinations,” she said. “Ongoing trials are now evaluating steroid sparing in combination with monoclonal antibodies or the role of frailty-guided treatment.”
The study was published March 19, 2021, in Blood.
Curtailing steroids
Myeloma patients aged 75 years or older or who have comorbidities and functional impairments are an understudied population. They are more susceptible to adverse events that may negatively affect the duration of treatment and outcomes. Steroids are “scarcely tolerated” in the long term, even among younger patients, and “whether sparing dexamethasone is as effective as prolonged steroid exposure remains an open issue,” the authors wrote. There are still no clear data on the advantage of continuous steroid treatment as opposed to fixed-duration treatment for newly diagnosed patients.
In 2010, a study compared high-dose with low-dose dexamethasone. As expected, the rate of adverse events was lower among patients who received the low-dose steroid, but quite unexpectedly, deaths with high-dose dexamethasone were significantly higher than with low-dose dexamethasone.
The 1-year overall survival was 96% among patients who received the low dose of dexamethasone versus 87% with the standard high dose.
S. Vincent Rajkumar, MD, of the Mayo Clinic, Rochester, Minn., who was the lead author of the 2010 study, spoke with this new organization about the current study. “This is an important and practice-changing study,” he said. “We have already changed our practice and recommendations based on this study.”
He explained that, for transplant-ineligible patients, instead of initial therapy with bortezomib-lenalidomide-dexamethasone followed by Rd, they use lenalidomide alone without steroids.
“After 9 months of initial therapy, I now recommend we stop dexamethasone unless we are having problems controlling the myeloma, such as progressive disease,” Dr. Rajkumar said. “I congratulate the authors on a study that will improve the quality of life for our patients.”
Improved event-free survival
In this study, Dr. Larocca and colleagues investigated the efficacy and feasibility of a dose- and schedule-adjusted Rd regimen that was followed by maintenance Rd-R 10 mg/d and compared the regimen with continuous Rd in elderly, intermediate-fit patients who were newly diagnosed with multiple myeloma.
The primary endpoint was event-free survival, defined as progression/death from any cause, lenalidomide discontinuation, and any hematologic grade 4 or nonhematologic grade 3-4 adverse events.
The cohort consisted of 199 patients who were randomly assigned to receive either Rd-R (n = 101) or continuous Rd (n = 98). The median age was 75 years in the Rd-R arm and 76 years in the Rd arm; 52% of patients in the Rd-R group and 43% in the Rd group were classified as being intermediate fit not for age but for geriatric impairments.
With a median follow-up of 37 months, event-free survival was 10.4 months in the Rd-R arm versus 6.9 months in the Rd arm (hazard ratio, 0.70; P = .02). This benefit was maintained beyond nine cycles (median: 19.8 vs. 10.6 months for Rd-R vs. Rd; HR, 0.55; P = .03)
The median PFS was 20.2 months with Rd-R and 18.3 months with Rd (HR, 0.78; P = .16). The median overall survival was not reached. The 3-year overall survival was 74% with Rd-R and 63% with continuous Rd (HR, 0.62; P = .06). Among patients remaining on therapy after nine cycles, no difference in median PFS was observed between the two groups (24.3 vs. 18.7 months; HR, 0.73; P = .19).
Best response was similar for both groups, with an overall response rate of 78% versus 68% (P = .15). The very good partial response rate was 51% in the Rd-R arm versus 39% in the continuous Rd arm (P = .09).
Toxicities were similar between the two groups. Hematologic adverse events of at least grade 3 were reported in 26% of Rd-R patients versus 20% of Rd patients (P = .40). In both groups, the most frequent grade ≥3 hematologic toxicity was neutropenia (21% vs 18%). The most frequent grade ≥3 toxicities were nonhematologic. They occurred in 33% of Rd-R patients and 43% of Rd patients (P = .15). The most frequent nonhematologic toxicities were infections (10% vs. 12%), constitutional (3% vs. 12%), dermatologic (7% vs. 3%), and central nervous toxicities (2% vs. 6%).
The study was sponsored by Fondazione EMN Italy Onlus. Dr. Larocca has received honoraria from Amgen, Bristol-Myers Squibb, Celgene, Janssen, and GlaxoSmithKline, and has served on the advisory boards for Bristol-Myers Squibb, Celgene, Janssen, and Takeda. Several coauthors also have disclosed relationships with industry. Dr. Rajkumar disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
For select older patients, it is safe to switch to a lower dose of lenalidomide maintenance therapy and discontinue dexamethasone after 9 months. The regimen is safe and yields outcomes similar to those of standard, continuous lenalidomide/dexamethasone (Rd), according to new findings.
At a median follow-up of 37 months, event-free survival was 10.4 months in the experimental arm in which dexamethasone therapy was stopped (Rd-R) versus 6.9 months for standard therapy. The tailored approach also resulted in fewer adverse effects.
The authors noted that there was no difference in progression-free survival (PFS) and overall survival between the two groups.
“These results may be useful for the treatment of myeloma patients, since approximately one-third of patients not eligible for stem cell transplantation are intermediate fit, the population in our study,” said lead author Alessandra Larocca, MD, PhD, from the department of hematology-oncology of the University Hospital Città della Salute e della Scienza, Torino, Italy.
She said in an interview that they expect that these findings “may help to optimize the treatment of less-fit elderly patients by reducing the occurrence of adverse events and thus improving outcomes and preserving quality of life of these patients.”
This approach is a viable option for clinicians to consider for some patient subgroups. “This steroid-sparing approach can also be used in other combinations,” she said. “Ongoing trials are now evaluating steroid sparing in combination with monoclonal antibodies or the role of frailty-guided treatment.”
The study was published March 19, 2021, in Blood.
Curtailing steroids
Myeloma patients aged 75 years or older or who have comorbidities and functional impairments are an understudied population. They are more susceptible to adverse events that may negatively affect the duration of treatment and outcomes. Steroids are “scarcely tolerated” in the long term, even among younger patients, and “whether sparing dexamethasone is as effective as prolonged steroid exposure remains an open issue,” the authors wrote. There are still no clear data on the advantage of continuous steroid treatment as opposed to fixed-duration treatment for newly diagnosed patients.
In 2010, a study compared high-dose with low-dose dexamethasone. As expected, the rate of adverse events was lower among patients who received the low-dose steroid, but quite unexpectedly, deaths with high-dose dexamethasone were significantly higher than with low-dose dexamethasone.
The 1-year overall survival was 96% among patients who received the low dose of dexamethasone versus 87% with the standard high dose.
S. Vincent Rajkumar, MD, of the Mayo Clinic, Rochester, Minn., who was the lead author of the 2010 study, spoke with this new organization about the current study. “This is an important and practice-changing study,” he said. “We have already changed our practice and recommendations based on this study.”
He explained that, for transplant-ineligible patients, instead of initial therapy with bortezomib-lenalidomide-dexamethasone followed by Rd, they use lenalidomide alone without steroids.
“After 9 months of initial therapy, I now recommend we stop dexamethasone unless we are having problems controlling the myeloma, such as progressive disease,” Dr. Rajkumar said. “I congratulate the authors on a study that will improve the quality of life for our patients.”
Improved event-free survival
In this study, Dr. Larocca and colleagues investigated the efficacy and feasibility of a dose- and schedule-adjusted Rd regimen that was followed by maintenance Rd-R 10 mg/d and compared the regimen with continuous Rd in elderly, intermediate-fit patients who were newly diagnosed with multiple myeloma.
The primary endpoint was event-free survival, defined as progression/death from any cause, lenalidomide discontinuation, and any hematologic grade 4 or nonhematologic grade 3-4 adverse events.
The cohort consisted of 199 patients who were randomly assigned to receive either Rd-R (n = 101) or continuous Rd (n = 98). The median age was 75 years in the Rd-R arm and 76 years in the Rd arm; 52% of patients in the Rd-R group and 43% in the Rd group were classified as being intermediate fit not for age but for geriatric impairments.
With a median follow-up of 37 months, event-free survival was 10.4 months in the Rd-R arm versus 6.9 months in the Rd arm (hazard ratio, 0.70; P = .02). This benefit was maintained beyond nine cycles (median: 19.8 vs. 10.6 months for Rd-R vs. Rd; HR, 0.55; P = .03)
The median PFS was 20.2 months with Rd-R and 18.3 months with Rd (HR, 0.78; P = .16). The median overall survival was not reached. The 3-year overall survival was 74% with Rd-R and 63% with continuous Rd (HR, 0.62; P = .06). Among patients remaining on therapy after nine cycles, no difference in median PFS was observed between the two groups (24.3 vs. 18.7 months; HR, 0.73; P = .19).
Best response was similar for both groups, with an overall response rate of 78% versus 68% (P = .15). The very good partial response rate was 51% in the Rd-R arm versus 39% in the continuous Rd arm (P = .09).
Toxicities were similar between the two groups. Hematologic adverse events of at least grade 3 were reported in 26% of Rd-R patients versus 20% of Rd patients (P = .40). In both groups, the most frequent grade ≥3 hematologic toxicity was neutropenia (21% vs 18%). The most frequent grade ≥3 toxicities were nonhematologic. They occurred in 33% of Rd-R patients and 43% of Rd patients (P = .15). The most frequent nonhematologic toxicities were infections (10% vs. 12%), constitutional (3% vs. 12%), dermatologic (7% vs. 3%), and central nervous toxicities (2% vs. 6%).
The study was sponsored by Fondazione EMN Italy Onlus. Dr. Larocca has received honoraria from Amgen, Bristol-Myers Squibb, Celgene, Janssen, and GlaxoSmithKline, and has served on the advisory boards for Bristol-Myers Squibb, Celgene, Janssen, and Takeda. Several coauthors also have disclosed relationships with industry. Dr. Rajkumar disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
First CAR T-cell therapy for multiple myeloma: Abecma
Chimeric antigen receptor (CAR) T-cell therapy, described as a “living drug,” is now available for patients with relapsed/refractory multiple myeloma who have been treated with four or more prior lines of therapy.
The Food and Drug Administration said these patients represent an “unmet medical need” when it granted approval for the new product – idecabtagene vicleucel (ide-cel; Abecma), developed by bluebird bio and Bristol-Myers Squibb.
Ide-cel is the first CAR T-cell therapy to gain approval for use in multiple myeloma. It is also the first CAR T-cell therapy to target B-cell maturation antigen.
Previously approved CAR T-cell products target CD19 and have been approved for use in certain types of leukemia and lymphoma.
All the CAR T-cell therapies are customized treatments that are created specifically for each individual patient from their own blood. The patient’s own T cells are removed from the blood, are genetically modified and expanded, and are then infused back into the patient. These modified T cells then seek out and destroy blood cancer cells, and they continue to do so long term.
In some patients, this has led to eradication of disease that had previously progressed with every other treatment that had been tried – results that have been described as “absolutely remarkable” and “one-shot therapy that looks to be curative.”
However, this cell therapy comes with serious adverse effects, including neurologic toxicity and cytokine release syndrome (CRS), which can be life threatening. For this reason, all these products have a risk evaluation and mitigation strategy, and the use of CAR T-cell therapies is limited to designated centers.
In addition, these CAR T-cells products are phenomenally expensive; hospitals have reported heavy financial losses with their use, and patients have turned to crowdfunding to pay for these therapies.
‘Phenomenal’ results in MM
The FDA noted that approval of ide-cel for multiple myeloma is based on data from a multicenter study that involved 127 patients with relapsed/refractory disease who had received at least three prior lines of treatment.
The results from this trial were published Feb. 25 in the New England Journal of Medicine.
An expert not involved in the trial described the results as “phenomenal.”
Krina Patel, MD, an associate professor in the department of lymphoma/myeloma at the University of Texas MD Anderson Cancer Center, Houston, said that “the response rate of 73% in a patient population with a median of six lines of therapy, and with one-third of those patients achieving a deep response of complete response or better, is phenomenal.
“We are very excited as a myeloma community for this study of idecabtagene vicleucel for relapsed/refractory patients,” Dr. Patel told this news organization at the time.
The lead investigator of the study, Nikhil Munshi, MD, of Dana-Farber Cancer Institute, Boston, commented:
Both experts highlighted the poor prognosis for patients with relapsed/refractory disease. Recent decades have seen a flurry of new agents for myeloma, and there are now three main classes of agents: immunomodulatory agents, proteasome inhibitors, and anti-CD38 antibodies.
Nevertheless, in some patients, the disease continues to progress. For patients for whom treatments with all three classes of drugs have failed, the median progression-free survival is 3-4 months, and the median overall survival is 9 months.
In contrast, the results reported in the NEJM article showed that overall median progression-free survival was 8.8 months, but it was more than double that (20.2 months) for patients who achieved a complete or stringent complete response.
Estimated median overall survival was 19.4 months, and the overall survival was 78% at 12 months. The authors note that overall survival data are not yet mature.
The patients who were enrolled in the CAR T-cell trial had undergone many previous treatments. They had undergone a median of six prior drug therapies (range, 3-16), and most of the patients (120, 94%) had also undergone autologous hematopoietic stem cell transplant.
In addition, the majority of patients (84%) had disease that was triple refractory (to an immunomodulatory agent, a proteasome inhibitor, and an anti-CD38 antibody), 60% had disease that was penta-exposed (to bortezomib, carfilzomib, lenalidomide, pomalidomide, and daratumumab), and 26% had disease that was penta-refractory.
In the NEJM article, the authors report that about a third of patients had a complete response to CAR T-cell therapy.
At a median follow-up of 13.3 months, 94 of 128 patients (73%) showed a response to therapy (P < .001); 42 (33%) showed a complete or stringent complete response; and 67 patients (52%) showed a “very good partial response or better,” they write.
In the FDA announcement of the product approval, the figures for complete response were slightly lower. “Of those studied, 28% of patients showed complete response – or disappearance of all signs of multiple myeloma – to Abecma, and 65% of this group remained in complete response to the treatment for at least 12 months,” the agency noted.
The FDA also noted that treatment with Abecma can cause severe side effects. The label carries a boxed warning regarding CRS, hemophagocytic lymphohistiocytosis/macrophage activation syndrome, neurologic toxicity, and prolonged cytopenia, all of which can be fatal or life threatening.
The most common side effects of Abecma are CRS, infections, fatigue, musculoskeletal pain, and a weakened immune system. Side effects from treatment usually appear within the first 1-2 weeks after treatment, but some side effects may occur later.
The agency also noted that, to further evaluate the long-term safety of the drug, it is requiring the manufacturer to conduct a postmarketing observational study.
“The FDA remains committed to advancing novel treatment options for areas of unmet patient need,” said Peter Marks, MD, PhD, director of the FDA’s Center for Biologics Evaluation and Research.
“While there is no cure for multiple myeloma, the long-term outlook can vary based on the individual’s age and the stage of the condition at the time of diagnosis. Today’s approval provides a new treatment option for patients who have this uncommon type of cancer.”
A version of this article first appeared on Medscape.com.
Chimeric antigen receptor (CAR) T-cell therapy, described as a “living drug,” is now available for patients with relapsed/refractory multiple myeloma who have been treated with four or more prior lines of therapy.
The Food and Drug Administration said these patients represent an “unmet medical need” when it granted approval for the new product – idecabtagene vicleucel (ide-cel; Abecma), developed by bluebird bio and Bristol-Myers Squibb.
Ide-cel is the first CAR T-cell therapy to gain approval for use in multiple myeloma. It is also the first CAR T-cell therapy to target B-cell maturation antigen.
Previously approved CAR T-cell products target CD19 and have been approved for use in certain types of leukemia and lymphoma.
All the CAR T-cell therapies are customized treatments that are created specifically for each individual patient from their own blood. The patient’s own T cells are removed from the blood, are genetically modified and expanded, and are then infused back into the patient. These modified T cells then seek out and destroy blood cancer cells, and they continue to do so long term.
In some patients, this has led to eradication of disease that had previously progressed with every other treatment that had been tried – results that have been described as “absolutely remarkable” and “one-shot therapy that looks to be curative.”
However, this cell therapy comes with serious adverse effects, including neurologic toxicity and cytokine release syndrome (CRS), which can be life threatening. For this reason, all these products have a risk evaluation and mitigation strategy, and the use of CAR T-cell therapies is limited to designated centers.
In addition, these CAR T-cells products are phenomenally expensive; hospitals have reported heavy financial losses with their use, and patients have turned to crowdfunding to pay for these therapies.
‘Phenomenal’ results in MM
The FDA noted that approval of ide-cel for multiple myeloma is based on data from a multicenter study that involved 127 patients with relapsed/refractory disease who had received at least three prior lines of treatment.
The results from this trial were published Feb. 25 in the New England Journal of Medicine.
An expert not involved in the trial described the results as “phenomenal.”
Krina Patel, MD, an associate professor in the department of lymphoma/myeloma at the University of Texas MD Anderson Cancer Center, Houston, said that “the response rate of 73% in a patient population with a median of six lines of therapy, and with one-third of those patients achieving a deep response of complete response or better, is phenomenal.
“We are very excited as a myeloma community for this study of idecabtagene vicleucel for relapsed/refractory patients,” Dr. Patel told this news organization at the time.
The lead investigator of the study, Nikhil Munshi, MD, of Dana-Farber Cancer Institute, Boston, commented:
Both experts highlighted the poor prognosis for patients with relapsed/refractory disease. Recent decades have seen a flurry of new agents for myeloma, and there are now three main classes of agents: immunomodulatory agents, proteasome inhibitors, and anti-CD38 antibodies.
Nevertheless, in some patients, the disease continues to progress. For patients for whom treatments with all three classes of drugs have failed, the median progression-free survival is 3-4 months, and the median overall survival is 9 months.
In contrast, the results reported in the NEJM article showed that overall median progression-free survival was 8.8 months, but it was more than double that (20.2 months) for patients who achieved a complete or stringent complete response.
Estimated median overall survival was 19.4 months, and the overall survival was 78% at 12 months. The authors note that overall survival data are not yet mature.
The patients who were enrolled in the CAR T-cell trial had undergone many previous treatments. They had undergone a median of six prior drug therapies (range, 3-16), and most of the patients (120, 94%) had also undergone autologous hematopoietic stem cell transplant.
In addition, the majority of patients (84%) had disease that was triple refractory (to an immunomodulatory agent, a proteasome inhibitor, and an anti-CD38 antibody), 60% had disease that was penta-exposed (to bortezomib, carfilzomib, lenalidomide, pomalidomide, and daratumumab), and 26% had disease that was penta-refractory.
In the NEJM article, the authors report that about a third of patients had a complete response to CAR T-cell therapy.
At a median follow-up of 13.3 months, 94 of 128 patients (73%) showed a response to therapy (P < .001); 42 (33%) showed a complete or stringent complete response; and 67 patients (52%) showed a “very good partial response or better,” they write.
In the FDA announcement of the product approval, the figures for complete response were slightly lower. “Of those studied, 28% of patients showed complete response – or disappearance of all signs of multiple myeloma – to Abecma, and 65% of this group remained in complete response to the treatment for at least 12 months,” the agency noted.
The FDA also noted that treatment with Abecma can cause severe side effects. The label carries a boxed warning regarding CRS, hemophagocytic lymphohistiocytosis/macrophage activation syndrome, neurologic toxicity, and prolonged cytopenia, all of which can be fatal or life threatening.
The most common side effects of Abecma are CRS, infections, fatigue, musculoskeletal pain, and a weakened immune system. Side effects from treatment usually appear within the first 1-2 weeks after treatment, but some side effects may occur later.
The agency also noted that, to further evaluate the long-term safety of the drug, it is requiring the manufacturer to conduct a postmarketing observational study.
“The FDA remains committed to advancing novel treatment options for areas of unmet patient need,” said Peter Marks, MD, PhD, director of the FDA’s Center for Biologics Evaluation and Research.
“While there is no cure for multiple myeloma, the long-term outlook can vary based on the individual’s age and the stage of the condition at the time of diagnosis. Today’s approval provides a new treatment option for patients who have this uncommon type of cancer.”
A version of this article first appeared on Medscape.com.
Chimeric antigen receptor (CAR) T-cell therapy, described as a “living drug,” is now available for patients with relapsed/refractory multiple myeloma who have been treated with four or more prior lines of therapy.
The Food and Drug Administration said these patients represent an “unmet medical need” when it granted approval for the new product – idecabtagene vicleucel (ide-cel; Abecma), developed by bluebird bio and Bristol-Myers Squibb.
Ide-cel is the first CAR T-cell therapy to gain approval for use in multiple myeloma. It is also the first CAR T-cell therapy to target B-cell maturation antigen.
Previously approved CAR T-cell products target CD19 and have been approved for use in certain types of leukemia and lymphoma.
All the CAR T-cell therapies are customized treatments that are created specifically for each individual patient from their own blood. The patient’s own T cells are removed from the blood, are genetically modified and expanded, and are then infused back into the patient. These modified T cells then seek out and destroy blood cancer cells, and they continue to do so long term.
In some patients, this has led to eradication of disease that had previously progressed with every other treatment that had been tried – results that have been described as “absolutely remarkable” and “one-shot therapy that looks to be curative.”
However, this cell therapy comes with serious adverse effects, including neurologic toxicity and cytokine release syndrome (CRS), which can be life threatening. For this reason, all these products have a risk evaluation and mitigation strategy, and the use of CAR T-cell therapies is limited to designated centers.
In addition, these CAR T-cells products are phenomenally expensive; hospitals have reported heavy financial losses with their use, and patients have turned to crowdfunding to pay for these therapies.
‘Phenomenal’ results in MM
The FDA noted that approval of ide-cel for multiple myeloma is based on data from a multicenter study that involved 127 patients with relapsed/refractory disease who had received at least three prior lines of treatment.
The results from this trial were published Feb. 25 in the New England Journal of Medicine.
An expert not involved in the trial described the results as “phenomenal.”
Krina Patel, MD, an associate professor in the department of lymphoma/myeloma at the University of Texas MD Anderson Cancer Center, Houston, said that “the response rate of 73% in a patient population with a median of six lines of therapy, and with one-third of those patients achieving a deep response of complete response or better, is phenomenal.
“We are very excited as a myeloma community for this study of idecabtagene vicleucel for relapsed/refractory patients,” Dr. Patel told this news organization at the time.
The lead investigator of the study, Nikhil Munshi, MD, of Dana-Farber Cancer Institute, Boston, commented:
Both experts highlighted the poor prognosis for patients with relapsed/refractory disease. Recent decades have seen a flurry of new agents for myeloma, and there are now three main classes of agents: immunomodulatory agents, proteasome inhibitors, and anti-CD38 antibodies.
Nevertheless, in some patients, the disease continues to progress. For patients for whom treatments with all three classes of drugs have failed, the median progression-free survival is 3-4 months, and the median overall survival is 9 months.
In contrast, the results reported in the NEJM article showed that overall median progression-free survival was 8.8 months, but it was more than double that (20.2 months) for patients who achieved a complete or stringent complete response.
Estimated median overall survival was 19.4 months, and the overall survival was 78% at 12 months. The authors note that overall survival data are not yet mature.
The patients who were enrolled in the CAR T-cell trial had undergone many previous treatments. They had undergone a median of six prior drug therapies (range, 3-16), and most of the patients (120, 94%) had also undergone autologous hematopoietic stem cell transplant.
In addition, the majority of patients (84%) had disease that was triple refractory (to an immunomodulatory agent, a proteasome inhibitor, and an anti-CD38 antibody), 60% had disease that was penta-exposed (to bortezomib, carfilzomib, lenalidomide, pomalidomide, and daratumumab), and 26% had disease that was penta-refractory.
In the NEJM article, the authors report that about a third of patients had a complete response to CAR T-cell therapy.
At a median follow-up of 13.3 months, 94 of 128 patients (73%) showed a response to therapy (P < .001); 42 (33%) showed a complete or stringent complete response; and 67 patients (52%) showed a “very good partial response or better,” they write.
In the FDA announcement of the product approval, the figures for complete response were slightly lower. “Of those studied, 28% of patients showed complete response – or disappearance of all signs of multiple myeloma – to Abecma, and 65% of this group remained in complete response to the treatment for at least 12 months,” the agency noted.
The FDA also noted that treatment with Abecma can cause severe side effects. The label carries a boxed warning regarding CRS, hemophagocytic lymphohistiocytosis/macrophage activation syndrome, neurologic toxicity, and prolonged cytopenia, all of which can be fatal or life threatening.
The most common side effects of Abecma are CRS, infections, fatigue, musculoskeletal pain, and a weakened immune system. Side effects from treatment usually appear within the first 1-2 weeks after treatment, but some side effects may occur later.
The agency also noted that, to further evaluate the long-term safety of the drug, it is requiring the manufacturer to conduct a postmarketing observational study.
“The FDA remains committed to advancing novel treatment options for areas of unmet patient need,” said Peter Marks, MD, PhD, director of the FDA’s Center for Biologics Evaluation and Research.
“While there is no cure for multiple myeloma, the long-term outlook can vary based on the individual’s age and the stage of the condition at the time of diagnosis. Today’s approval provides a new treatment option for patients who have this uncommon type of cancer.”
A version of this article first appeared on Medscape.com.
FDA scrutinizes cancer therapies granted accelerated approval
U.S. regulators are stepping up scrutiny of therapies that were granted an accelerated approval to treat cancers on the basis of surrogate endpoints but have failed to show clinical or survival benefits upon more extensive testing.
At issue are a number of cancer indications for immunotherapies. Four have already been withdrawn (voluntarily by the manufacturer), and six more will be reviewed at an upcoming meeting.
In recent years, the US Food and Drug Administration has granted accelerated approvals to oncology medicines on the basis of evidence that suggests a benefit for patients. Examples of such evidence relate to response rates and estimates of tumor shrinkage. But these approvals are granted on the condition that the manufacturer conducts larger clinical trials that show clinical benefit, including benefit in overall survival.
Richard Pazdur, MD, director of the FDA’s Oncology Center of Excellence, has argued that the point of these conditional approvals is to find acceptable surrogate markers to allow people with “desperate illnesses” to have access to potentially helpful drugs while work continues to determine the drug’s actual benefit to patients.
Oncologists are now questioning whether the FDA has become too lenient in its approach, Daniel A. Goldstein, MD, a senior physician in medical oncology and internal medicine at the Rabin Medical Center, Petah Tikva, Israel, told this news organization.
“The main two things you want from a cancer drug is to live longer and live a higher quality of life,” said Goldstein. “But these endpoints that they’ve been using over the past few years are not really giving us confidence that these drugs are actually going to help to live longer or better.”
Dr. Pazdur said the FDA will consider withdrawing its accelerated approvals when results of further studies do not confirm expected benefit for patients.
“This is like the pendulum has swung as far as it was going to swing and now is on the backswing,” said Dr. Goldstein, also of the department of health policy and management at the University of North Carolina at Chapel Hill. “You could call this a watershed moment.”
Although there’s near universal interest in allowing people with advanced cancer access to promising medicines, there’s also rising concern about exposing patients needlessly to costly drugs with potentially tough side effects. That may prompt a shift in the standards U.S. regulators apply to cancer medicines, Dr. Goldstein said.
Indications withdrawn and under review
In a meeting scheduled for April 27-29, the FDA’s Oncologic Drugs Advisory Committee will review indications granted through the accelerated approval process for three immunotherapies: pembrolizumab (Keytruda), atezolizumab (Tecentriq), and nivolumab (Opdivo).
It is part of an industry-wide evaluation of accelerated approvals for cancer indications in which confirmatory trials did not confirm clinical benefit, the FDA noted.
The process has already led to voluntary withdrawals of four cancer indications by the manufacturers, including one indication each for pembrolizumab, atezolizumab, and nivolumab, and one for durvalumab (Imfinzi).
All of these immunotherapies are approved for numerous cancer indications, and they all remain on the market. It is only the U.S. approvals for particular cancer indications that have been withdrawn.
In the past, olaratumab (Lartruvo) was withdrawn from the market altogether. The FDA granted accelerated approval of the drug for soft tissue sarcoma, but clinical benefit was not confirmed in a phase 3 trial.
Issue highlighted by Dr. Prasad and Dr. Gyawali
In recent years, much of the attention on accelerated approvals was spurred by the work of a few researchers, particularly Vinay Prasad, MD, MPH, associate professor in the department of epidemiology and biostatistics, University of California, San Francisco, and Bishal Gyawali, MD, PhD, from Queen’s University Cancer Research Institute, Kingston, Ont. (Both are regular contributors to the oncology section of this news organization.)
Dr. Goldstein made this point in a tweet about the FDA’s announcement of the April ODAC meetings:
“Well done to @oncology_bg and @VPrasadMDMPH among others for highlighting in their papers that the FDA wasn’t properly evaluating accelerated approval drugs.
FDA have listened.
And I thought that the impact of academia was limited!”
Dr. Prasad has made the case for closer scrutiny of accelerated approvals in a number of journal articles and in his 2020 book, “Malignant: How Bad Policy and Bad Evidence Harm People with Cancer,” published by Johns Hopkins University Press.
The book includes highlights of a 2016 article published in Mayo Clinic Proceedings that focused on surrogate endpoints used for FDA approvals. In the article, Dr. Prasad and his coauthor report that they did not find formal analyses of the strength of the surrogate-survival correlation in 14 of 25 cases of accelerated approvals (56%) and in 11 of 30 traditional approvals (37%).
“Our results were concerning. They imply that many surrogates are based on little more than a gut feeling. You might rationalize that and argue a gut feeling is the same as ‘reasonably likely to predict,’ but no reasonable person could think a gut feeling means established,” Dr. Prasad writes in his book. “Our result suggests the FDA is using surrogate endpoints far beyond what may be fair or reasonable.”
Dr. Gyawali has argued that the process by which the FDA assesses cancer drugs for approvals has undergone a profound shift. He has most recently remarked on this in an October 2020 commentary on Medscape.
“Until the recent floodgate of approvals based on response rates from single-arm trials, the majority of cancer therapy decisions were supported by evidence generated from randomized controlled trials (RCTs),” Dr. Gyawali wrote. “The evidence base to support clinical decisions in managing therapeutic side effects has been comparatively sparse.”
Accelerated approval to improve access
The FDA has struggled for about 2 decades with questions of where to set the bar on evidence for promising cancer drugs.
The agency’s accelerated approval program for drugs began in 1992. During the first decade, the focus was largely on medicines related to HIV.
In the early 2000s, oncology drugs began to dominate the program.
Dr. Pazdur has presided over the FDA’s marked changes regarding the use of surrogate markers when weighing whether to allow sales of cancer medicines. Formerly a professor at the University of Texas MD Anderson Cancer Center, Houston, Dr. Pazdur joined the FDA as director of the Division of Oncology Drug Products in 1999.
Soon after his appointment, he had to field inquiries from pharmaceutical companies about how much evidence they needed to receive accelerated approvals.
Early on, he publicly expressed impatience about the drugmakers’ approach. “The purpose of accelerated approval was not accelerated drug company profits,” Dr. Padzur said at a 2004 ODAC meeting.
Rather, the point is to allow access to potentially helpful drugs while work continues to determine their actual benefit to patients, he explained.
“It wasn’t a license to do less, less, less, and less to a point now that we may be getting companies that are coming in” intent on determining the minimum evidence the FDA will take, Dr. Pazdur said. “It shouldn’t be what is the lowest. It is what is a sufficient amount to give patients and physicians a real understanding of what their drug will do.”
In a 2016 interview with The New York Times, Dr. Pazdur said that his views on cancer drug approvals have evolved with time. He described himself as being “on a jihad to streamline the review process and get things out the door faster.”
“I have evolved from regulator to regulator-advocate,” Dr. Pazdur told the newspaper.
His attitude reflected his personal experience in losing his wife to ovarian cancer in 2015, as well as shifts in science and law. In 2012, Congress passed a law that gave the FDA new resources to speed medicines for life-threatening diseases to market. In addition, advances in genetics appeared to be making some medications more effective and easier to test, Dr. Pazdur said in The New York Times interview.
Withdrawals seen as sign of success
Since the program’s inception, only 6% of accelerated approvals for oncology indications have been withdrawn, the FDA said.
It would be a sign that the program is working if the April meetings lead to further withdrawals of indications that have been granted accelerated approval, Julie R. Gralow, MD, chief medical officer of the American Society of Clinical Oncology, said in an interview with this news organization.
“It shouldn’t be seen as a failure,” Dr. Gralow said.
In her own practice at the Fred Hutchinson Cancer Research Center, Seattle, she has seen the value of emerging therapies for patients fighting advanced cancers. During her 25 years of clinical practice in an academic setting, she has gained access to drugs through single-patient investigative new drug applications.
However, this path is not an option for many patients who undergo treatment in facilities other than academic centers, she commented. She noted that the accelerated approval process is a way to expand access to emerging medicines, but she sees a need for caution in the use of drugs that have been given only this conditional approval. She emphasizes that such drugs may be suitable only for certain patients.
“I would say that, for metastatic patients, patients with incurable disease, we are willing to take some risk,” Dr. Gralow said. “We don’t have other options. They can’t wait the years that it would take to get a drug approved.”
One such patient is David Mitchell, who serves as the consumer representative on ODAC. He told this news organization that he is taking three drugs for multiple myeloma that received accelerated approvals: pomalidomide, bortezomib, and daratumumab.
“I want the FDA to have the option to approve drugs in an accelerated pathway, because as a patient taking three drugs granted accelerated approval, I’m benefiting – I’ve lived the benefit,” Mr. Mitchell said, “and I want other patients to have the opportunity to have that benefit.”
He believes that the FDA’s approach regarding accelerated approvals serves to get potentially beneficial medicines to patients who have few options and also fulfills the FDA’s mandate to protect the public from treatments that have little benefit but can cause harm.
Accelerated approval also offers needed flexibility to drugmakers as they develop more specifically targeted drugs for diseases that affect relatively few people, such as multiple myeloma, he said. “As the targeting of your therapies gets tighter and for smaller groups of patients, you have a harder time following the traditional model,” such as conducting large, double-blind, placebo-controlled trials that may indicate increased overall survival, he said.
“To me, this is the way the FDA intended it to work,” he added. “It’s going to offer the accelerated approval based on a surrogate endpoint for a safe drug, but it’s going to require the confirmatory trial, and if the confirmatory trial fails, it will pull the drug off the market.”
Some medicines that have received accelerated approvals may ultimately be found not to benefit patients, Mr. Mitchell acknowledged. But people in his situation, whose disease has progressed despite treatments, may want to take that risk, he added.
Four cancer indications recently withdrawn voluntarily by the manufacturer
- December 2020: Nivolumab for the treatment of patients with metastatic small cell lung cancer with progression after platinum-based chemotherapy and at least one other line of therapy (Bristol Myers Squibb).
- February 2021: Durvalumab for the treatment of patients with locally advanced or metastatic urothelial carcinoma whose disease has progressed during or following platinum-based chemotherapy or within 12 months of neoadjuvant or adjuvant platinum-containing chemotherapy (AstraZeneca).
- March 2021: Pembrolizumab for the treatment of patients with metastatic small cell lung cancer with disease progression on or after platinum-based chemotherapy and at least one other prior line of therapy (Merck).
- March 2021: Atezolizumab for treatment of patients with locally advanced or metastatic urothelial carcinoma who experience disease progression during or following platinum-containing atezolizumab chemotherapy or disease progression within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy (Genentech).
Six cancer indications under review at the April 2021 ODAC meeting
- Atezolizumab indicated in combination with protein-bound for the treatment of adults with unresectable locally advanced or metastatic triple-negative whose tumors express PD-L1 (PD-L1 stained tumor-infiltrating immune cells of any intensity covering ≥1% of the tumor area), as determined by an FDA-approved test.
- Atezolizumab indicated for patients with locally advanced or metastatic urothelial carcinoma who are not eligible for cisplatin-containing chemotherapy.
- Pembrolizumab indicated for the treatment of patients with locally advanced or metastatic urothelial carcinoma who are not eligible for cisplatin-containing chemotherapy.
- Pembrolizumab indicated for the treatment of patients with recurrent locally advanced or metastatic gastric or gastroesophageal junction adenocarcinoma whose tumors express PD-L1 (Combined Positive Score ≥1), as determined by an FDA-approved test, with disease progression on or after two or more prior lines of therapy including fluoropyrimidine- and platinum-containing chemotherapy and if appropriate, HER2/neu-targeted therapy.
- Pembrolizumab indicated for the treatment of patients with who have been previously treated with .
- Nivolumab indicated as a single agent for the treatment of patients with hepatocellular carcinoma who have been previously treated with sorafenib.
A version of this article first appeared on Medscape.com.
U.S. regulators are stepping up scrutiny of therapies that were granted an accelerated approval to treat cancers on the basis of surrogate endpoints but have failed to show clinical or survival benefits upon more extensive testing.
At issue are a number of cancer indications for immunotherapies. Four have already been withdrawn (voluntarily by the manufacturer), and six more will be reviewed at an upcoming meeting.
In recent years, the US Food and Drug Administration has granted accelerated approvals to oncology medicines on the basis of evidence that suggests a benefit for patients. Examples of such evidence relate to response rates and estimates of tumor shrinkage. But these approvals are granted on the condition that the manufacturer conducts larger clinical trials that show clinical benefit, including benefit in overall survival.
Richard Pazdur, MD, director of the FDA’s Oncology Center of Excellence, has argued that the point of these conditional approvals is to find acceptable surrogate markers to allow people with “desperate illnesses” to have access to potentially helpful drugs while work continues to determine the drug’s actual benefit to patients.
Oncologists are now questioning whether the FDA has become too lenient in its approach, Daniel A. Goldstein, MD, a senior physician in medical oncology and internal medicine at the Rabin Medical Center, Petah Tikva, Israel, told this news organization.
“The main two things you want from a cancer drug is to live longer and live a higher quality of life,” said Goldstein. “But these endpoints that they’ve been using over the past few years are not really giving us confidence that these drugs are actually going to help to live longer or better.”
Dr. Pazdur said the FDA will consider withdrawing its accelerated approvals when results of further studies do not confirm expected benefit for patients.
“This is like the pendulum has swung as far as it was going to swing and now is on the backswing,” said Dr. Goldstein, also of the department of health policy and management at the University of North Carolina at Chapel Hill. “You could call this a watershed moment.”
Although there’s near universal interest in allowing people with advanced cancer access to promising medicines, there’s also rising concern about exposing patients needlessly to costly drugs with potentially tough side effects. That may prompt a shift in the standards U.S. regulators apply to cancer medicines, Dr. Goldstein said.
Indications withdrawn and under review
In a meeting scheduled for April 27-29, the FDA’s Oncologic Drugs Advisory Committee will review indications granted through the accelerated approval process for three immunotherapies: pembrolizumab (Keytruda), atezolizumab (Tecentriq), and nivolumab (Opdivo).
It is part of an industry-wide evaluation of accelerated approvals for cancer indications in which confirmatory trials did not confirm clinical benefit, the FDA noted.
The process has already led to voluntary withdrawals of four cancer indications by the manufacturers, including one indication each for pembrolizumab, atezolizumab, and nivolumab, and one for durvalumab (Imfinzi).
All of these immunotherapies are approved for numerous cancer indications, and they all remain on the market. It is only the U.S. approvals for particular cancer indications that have been withdrawn.
In the past, olaratumab (Lartruvo) was withdrawn from the market altogether. The FDA granted accelerated approval of the drug for soft tissue sarcoma, but clinical benefit was not confirmed in a phase 3 trial.
Issue highlighted by Dr. Prasad and Dr. Gyawali
In recent years, much of the attention on accelerated approvals was spurred by the work of a few researchers, particularly Vinay Prasad, MD, MPH, associate professor in the department of epidemiology and biostatistics, University of California, San Francisco, and Bishal Gyawali, MD, PhD, from Queen’s University Cancer Research Institute, Kingston, Ont. (Both are regular contributors to the oncology section of this news organization.)
Dr. Goldstein made this point in a tweet about the FDA’s announcement of the April ODAC meetings:
“Well done to @oncology_bg and @VPrasadMDMPH among others for highlighting in their papers that the FDA wasn’t properly evaluating accelerated approval drugs.
FDA have listened.
And I thought that the impact of academia was limited!”
Dr. Prasad has made the case for closer scrutiny of accelerated approvals in a number of journal articles and in his 2020 book, “Malignant: How Bad Policy and Bad Evidence Harm People with Cancer,” published by Johns Hopkins University Press.
The book includes highlights of a 2016 article published in Mayo Clinic Proceedings that focused on surrogate endpoints used for FDA approvals. In the article, Dr. Prasad and his coauthor report that they did not find formal analyses of the strength of the surrogate-survival correlation in 14 of 25 cases of accelerated approvals (56%) and in 11 of 30 traditional approvals (37%).
“Our results were concerning. They imply that many surrogates are based on little more than a gut feeling. You might rationalize that and argue a gut feeling is the same as ‘reasonably likely to predict,’ but no reasonable person could think a gut feeling means established,” Dr. Prasad writes in his book. “Our result suggests the FDA is using surrogate endpoints far beyond what may be fair or reasonable.”
Dr. Gyawali has argued that the process by which the FDA assesses cancer drugs for approvals has undergone a profound shift. He has most recently remarked on this in an October 2020 commentary on Medscape.
“Until the recent floodgate of approvals based on response rates from single-arm trials, the majority of cancer therapy decisions were supported by evidence generated from randomized controlled trials (RCTs),” Dr. Gyawali wrote. “The evidence base to support clinical decisions in managing therapeutic side effects has been comparatively sparse.”
Accelerated approval to improve access
The FDA has struggled for about 2 decades with questions of where to set the bar on evidence for promising cancer drugs.
The agency’s accelerated approval program for drugs began in 1992. During the first decade, the focus was largely on medicines related to HIV.
In the early 2000s, oncology drugs began to dominate the program.
Dr. Pazdur has presided over the FDA’s marked changes regarding the use of surrogate markers when weighing whether to allow sales of cancer medicines. Formerly a professor at the University of Texas MD Anderson Cancer Center, Houston, Dr. Pazdur joined the FDA as director of the Division of Oncology Drug Products in 1999.
Soon after his appointment, he had to field inquiries from pharmaceutical companies about how much evidence they needed to receive accelerated approvals.
Early on, he publicly expressed impatience about the drugmakers’ approach. “The purpose of accelerated approval was not accelerated drug company profits,” Dr. Padzur said at a 2004 ODAC meeting.
Rather, the point is to allow access to potentially helpful drugs while work continues to determine their actual benefit to patients, he explained.
“It wasn’t a license to do less, less, less, and less to a point now that we may be getting companies that are coming in” intent on determining the minimum evidence the FDA will take, Dr. Pazdur said. “It shouldn’t be what is the lowest. It is what is a sufficient amount to give patients and physicians a real understanding of what their drug will do.”
In a 2016 interview with The New York Times, Dr. Pazdur said that his views on cancer drug approvals have evolved with time. He described himself as being “on a jihad to streamline the review process and get things out the door faster.”
“I have evolved from regulator to regulator-advocate,” Dr. Pazdur told the newspaper.
His attitude reflected his personal experience in losing his wife to ovarian cancer in 2015, as well as shifts in science and law. In 2012, Congress passed a law that gave the FDA new resources to speed medicines for life-threatening diseases to market. In addition, advances in genetics appeared to be making some medications more effective and easier to test, Dr. Pazdur said in The New York Times interview.
Withdrawals seen as sign of success
Since the program’s inception, only 6% of accelerated approvals for oncology indications have been withdrawn, the FDA said.
It would be a sign that the program is working if the April meetings lead to further withdrawals of indications that have been granted accelerated approval, Julie R. Gralow, MD, chief medical officer of the American Society of Clinical Oncology, said in an interview with this news organization.
“It shouldn’t be seen as a failure,” Dr. Gralow said.
In her own practice at the Fred Hutchinson Cancer Research Center, Seattle, she has seen the value of emerging therapies for patients fighting advanced cancers. During her 25 years of clinical practice in an academic setting, she has gained access to drugs through single-patient investigative new drug applications.
However, this path is not an option for many patients who undergo treatment in facilities other than academic centers, she commented. She noted that the accelerated approval process is a way to expand access to emerging medicines, but she sees a need for caution in the use of drugs that have been given only this conditional approval. She emphasizes that such drugs may be suitable only for certain patients.
“I would say that, for metastatic patients, patients with incurable disease, we are willing to take some risk,” Dr. Gralow said. “We don’t have other options. They can’t wait the years that it would take to get a drug approved.”
One such patient is David Mitchell, who serves as the consumer representative on ODAC. He told this news organization that he is taking three drugs for multiple myeloma that received accelerated approvals: pomalidomide, bortezomib, and daratumumab.
“I want the FDA to have the option to approve drugs in an accelerated pathway, because as a patient taking three drugs granted accelerated approval, I’m benefiting – I’ve lived the benefit,” Mr. Mitchell said, “and I want other patients to have the opportunity to have that benefit.”
He believes that the FDA’s approach regarding accelerated approvals serves to get potentially beneficial medicines to patients who have few options and also fulfills the FDA’s mandate to protect the public from treatments that have little benefit but can cause harm.
Accelerated approval also offers needed flexibility to drugmakers as they develop more specifically targeted drugs for diseases that affect relatively few people, such as multiple myeloma, he said. “As the targeting of your therapies gets tighter and for smaller groups of patients, you have a harder time following the traditional model,” such as conducting large, double-blind, placebo-controlled trials that may indicate increased overall survival, he said.
“To me, this is the way the FDA intended it to work,” he added. “It’s going to offer the accelerated approval based on a surrogate endpoint for a safe drug, but it’s going to require the confirmatory trial, and if the confirmatory trial fails, it will pull the drug off the market.”
Some medicines that have received accelerated approvals may ultimately be found not to benefit patients, Mr. Mitchell acknowledged. But people in his situation, whose disease has progressed despite treatments, may want to take that risk, he added.
Four cancer indications recently withdrawn voluntarily by the manufacturer
- December 2020: Nivolumab for the treatment of patients with metastatic small cell lung cancer with progression after platinum-based chemotherapy and at least one other line of therapy (Bristol Myers Squibb).
- February 2021: Durvalumab for the treatment of patients with locally advanced or metastatic urothelial carcinoma whose disease has progressed during or following platinum-based chemotherapy or within 12 months of neoadjuvant or adjuvant platinum-containing chemotherapy (AstraZeneca).
- March 2021: Pembrolizumab for the treatment of patients with metastatic small cell lung cancer with disease progression on or after platinum-based chemotherapy and at least one other prior line of therapy (Merck).
- March 2021: Atezolizumab for treatment of patients with locally advanced or metastatic urothelial carcinoma who experience disease progression during or following platinum-containing atezolizumab chemotherapy or disease progression within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy (Genentech).
Six cancer indications under review at the April 2021 ODAC meeting
- Atezolizumab indicated in combination with protein-bound for the treatment of adults with unresectable locally advanced or metastatic triple-negative whose tumors express PD-L1 (PD-L1 stained tumor-infiltrating immune cells of any intensity covering ≥1% of the tumor area), as determined by an FDA-approved test.
- Atezolizumab indicated for patients with locally advanced or metastatic urothelial carcinoma who are not eligible for cisplatin-containing chemotherapy.
- Pembrolizumab indicated for the treatment of patients with locally advanced or metastatic urothelial carcinoma who are not eligible for cisplatin-containing chemotherapy.
- Pembrolizumab indicated for the treatment of patients with recurrent locally advanced or metastatic gastric or gastroesophageal junction adenocarcinoma whose tumors express PD-L1 (Combined Positive Score ≥1), as determined by an FDA-approved test, with disease progression on or after two or more prior lines of therapy including fluoropyrimidine- and platinum-containing chemotherapy and if appropriate, HER2/neu-targeted therapy.
- Pembrolizumab indicated for the treatment of patients with who have been previously treated with .
- Nivolumab indicated as a single agent for the treatment of patients with hepatocellular carcinoma who have been previously treated with sorafenib.
A version of this article first appeared on Medscape.com.
U.S. regulators are stepping up scrutiny of therapies that were granted an accelerated approval to treat cancers on the basis of surrogate endpoints but have failed to show clinical or survival benefits upon more extensive testing.
At issue are a number of cancer indications for immunotherapies. Four have already been withdrawn (voluntarily by the manufacturer), and six more will be reviewed at an upcoming meeting.
In recent years, the US Food and Drug Administration has granted accelerated approvals to oncology medicines on the basis of evidence that suggests a benefit for patients. Examples of such evidence relate to response rates and estimates of tumor shrinkage. But these approvals are granted on the condition that the manufacturer conducts larger clinical trials that show clinical benefit, including benefit in overall survival.
Richard Pazdur, MD, director of the FDA’s Oncology Center of Excellence, has argued that the point of these conditional approvals is to find acceptable surrogate markers to allow people with “desperate illnesses” to have access to potentially helpful drugs while work continues to determine the drug’s actual benefit to patients.
Oncologists are now questioning whether the FDA has become too lenient in its approach, Daniel A. Goldstein, MD, a senior physician in medical oncology and internal medicine at the Rabin Medical Center, Petah Tikva, Israel, told this news organization.
“The main two things you want from a cancer drug is to live longer and live a higher quality of life,” said Goldstein. “But these endpoints that they’ve been using over the past few years are not really giving us confidence that these drugs are actually going to help to live longer or better.”
Dr. Pazdur said the FDA will consider withdrawing its accelerated approvals when results of further studies do not confirm expected benefit for patients.
“This is like the pendulum has swung as far as it was going to swing and now is on the backswing,” said Dr. Goldstein, also of the department of health policy and management at the University of North Carolina at Chapel Hill. “You could call this a watershed moment.”
Although there’s near universal interest in allowing people with advanced cancer access to promising medicines, there’s also rising concern about exposing patients needlessly to costly drugs with potentially tough side effects. That may prompt a shift in the standards U.S. regulators apply to cancer medicines, Dr. Goldstein said.
Indications withdrawn and under review
In a meeting scheduled for April 27-29, the FDA’s Oncologic Drugs Advisory Committee will review indications granted through the accelerated approval process for three immunotherapies: pembrolizumab (Keytruda), atezolizumab (Tecentriq), and nivolumab (Opdivo).
It is part of an industry-wide evaluation of accelerated approvals for cancer indications in which confirmatory trials did not confirm clinical benefit, the FDA noted.
The process has already led to voluntary withdrawals of four cancer indications by the manufacturers, including one indication each for pembrolizumab, atezolizumab, and nivolumab, and one for durvalumab (Imfinzi).
All of these immunotherapies are approved for numerous cancer indications, and they all remain on the market. It is only the U.S. approvals for particular cancer indications that have been withdrawn.
In the past, olaratumab (Lartruvo) was withdrawn from the market altogether. The FDA granted accelerated approval of the drug for soft tissue sarcoma, but clinical benefit was not confirmed in a phase 3 trial.
Issue highlighted by Dr. Prasad and Dr. Gyawali
In recent years, much of the attention on accelerated approvals was spurred by the work of a few researchers, particularly Vinay Prasad, MD, MPH, associate professor in the department of epidemiology and biostatistics, University of California, San Francisco, and Bishal Gyawali, MD, PhD, from Queen’s University Cancer Research Institute, Kingston, Ont. (Both are regular contributors to the oncology section of this news organization.)
Dr. Goldstein made this point in a tweet about the FDA’s announcement of the April ODAC meetings:
“Well done to @oncology_bg and @VPrasadMDMPH among others for highlighting in their papers that the FDA wasn’t properly evaluating accelerated approval drugs.
FDA have listened.
And I thought that the impact of academia was limited!”
Dr. Prasad has made the case for closer scrutiny of accelerated approvals in a number of journal articles and in his 2020 book, “Malignant: How Bad Policy and Bad Evidence Harm People with Cancer,” published by Johns Hopkins University Press.
The book includes highlights of a 2016 article published in Mayo Clinic Proceedings that focused on surrogate endpoints used for FDA approvals. In the article, Dr. Prasad and his coauthor report that they did not find formal analyses of the strength of the surrogate-survival correlation in 14 of 25 cases of accelerated approvals (56%) and in 11 of 30 traditional approvals (37%).
“Our results were concerning. They imply that many surrogates are based on little more than a gut feeling. You might rationalize that and argue a gut feeling is the same as ‘reasonably likely to predict,’ but no reasonable person could think a gut feeling means established,” Dr. Prasad writes in his book. “Our result suggests the FDA is using surrogate endpoints far beyond what may be fair or reasonable.”
Dr. Gyawali has argued that the process by which the FDA assesses cancer drugs for approvals has undergone a profound shift. He has most recently remarked on this in an October 2020 commentary on Medscape.
“Until the recent floodgate of approvals based on response rates from single-arm trials, the majority of cancer therapy decisions were supported by evidence generated from randomized controlled trials (RCTs),” Dr. Gyawali wrote. “The evidence base to support clinical decisions in managing therapeutic side effects has been comparatively sparse.”
Accelerated approval to improve access
The FDA has struggled for about 2 decades with questions of where to set the bar on evidence for promising cancer drugs.
The agency’s accelerated approval program for drugs began in 1992. During the first decade, the focus was largely on medicines related to HIV.
In the early 2000s, oncology drugs began to dominate the program.
Dr. Pazdur has presided over the FDA’s marked changes regarding the use of surrogate markers when weighing whether to allow sales of cancer medicines. Formerly a professor at the University of Texas MD Anderson Cancer Center, Houston, Dr. Pazdur joined the FDA as director of the Division of Oncology Drug Products in 1999.
Soon after his appointment, he had to field inquiries from pharmaceutical companies about how much evidence they needed to receive accelerated approvals.
Early on, he publicly expressed impatience about the drugmakers’ approach. “The purpose of accelerated approval was not accelerated drug company profits,” Dr. Padzur said at a 2004 ODAC meeting.
Rather, the point is to allow access to potentially helpful drugs while work continues to determine their actual benefit to patients, he explained.
“It wasn’t a license to do less, less, less, and less to a point now that we may be getting companies that are coming in” intent on determining the minimum evidence the FDA will take, Dr. Pazdur said. “It shouldn’t be what is the lowest. It is what is a sufficient amount to give patients and physicians a real understanding of what their drug will do.”
In a 2016 interview with The New York Times, Dr. Pazdur said that his views on cancer drug approvals have evolved with time. He described himself as being “on a jihad to streamline the review process and get things out the door faster.”
“I have evolved from regulator to regulator-advocate,” Dr. Pazdur told the newspaper.
His attitude reflected his personal experience in losing his wife to ovarian cancer in 2015, as well as shifts in science and law. In 2012, Congress passed a law that gave the FDA new resources to speed medicines for life-threatening diseases to market. In addition, advances in genetics appeared to be making some medications more effective and easier to test, Dr. Pazdur said in The New York Times interview.
Withdrawals seen as sign of success
Since the program’s inception, only 6% of accelerated approvals for oncology indications have been withdrawn, the FDA said.
It would be a sign that the program is working if the April meetings lead to further withdrawals of indications that have been granted accelerated approval, Julie R. Gralow, MD, chief medical officer of the American Society of Clinical Oncology, said in an interview with this news organization.
“It shouldn’t be seen as a failure,” Dr. Gralow said.
In her own practice at the Fred Hutchinson Cancer Research Center, Seattle, she has seen the value of emerging therapies for patients fighting advanced cancers. During her 25 years of clinical practice in an academic setting, she has gained access to drugs through single-patient investigative new drug applications.
However, this path is not an option for many patients who undergo treatment in facilities other than academic centers, she commented. She noted that the accelerated approval process is a way to expand access to emerging medicines, but she sees a need for caution in the use of drugs that have been given only this conditional approval. She emphasizes that such drugs may be suitable only for certain patients.
“I would say that, for metastatic patients, patients with incurable disease, we are willing to take some risk,” Dr. Gralow said. “We don’t have other options. They can’t wait the years that it would take to get a drug approved.”
One such patient is David Mitchell, who serves as the consumer representative on ODAC. He told this news organization that he is taking three drugs for multiple myeloma that received accelerated approvals: pomalidomide, bortezomib, and daratumumab.
“I want the FDA to have the option to approve drugs in an accelerated pathway, because as a patient taking three drugs granted accelerated approval, I’m benefiting – I’ve lived the benefit,” Mr. Mitchell said, “and I want other patients to have the opportunity to have that benefit.”
He believes that the FDA’s approach regarding accelerated approvals serves to get potentially beneficial medicines to patients who have few options and also fulfills the FDA’s mandate to protect the public from treatments that have little benefit but can cause harm.
Accelerated approval also offers needed flexibility to drugmakers as they develop more specifically targeted drugs for diseases that affect relatively few people, such as multiple myeloma, he said. “As the targeting of your therapies gets tighter and for smaller groups of patients, you have a harder time following the traditional model,” such as conducting large, double-blind, placebo-controlled trials that may indicate increased overall survival, he said.
“To me, this is the way the FDA intended it to work,” he added. “It’s going to offer the accelerated approval based on a surrogate endpoint for a safe drug, but it’s going to require the confirmatory trial, and if the confirmatory trial fails, it will pull the drug off the market.”
Some medicines that have received accelerated approvals may ultimately be found not to benefit patients, Mr. Mitchell acknowledged. But people in his situation, whose disease has progressed despite treatments, may want to take that risk, he added.
Four cancer indications recently withdrawn voluntarily by the manufacturer
- December 2020: Nivolumab for the treatment of patients with metastatic small cell lung cancer with progression after platinum-based chemotherapy and at least one other line of therapy (Bristol Myers Squibb).
- February 2021: Durvalumab for the treatment of patients with locally advanced or metastatic urothelial carcinoma whose disease has progressed during or following platinum-based chemotherapy or within 12 months of neoadjuvant or adjuvant platinum-containing chemotherapy (AstraZeneca).
- March 2021: Pembrolizumab for the treatment of patients with metastatic small cell lung cancer with disease progression on or after platinum-based chemotherapy and at least one other prior line of therapy (Merck).
- March 2021: Atezolizumab for treatment of patients with locally advanced or metastatic urothelial carcinoma who experience disease progression during or following platinum-containing atezolizumab chemotherapy or disease progression within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy (Genentech).
Six cancer indications under review at the April 2021 ODAC meeting
- Atezolizumab indicated in combination with protein-bound for the treatment of adults with unresectable locally advanced or metastatic triple-negative whose tumors express PD-L1 (PD-L1 stained tumor-infiltrating immune cells of any intensity covering ≥1% of the tumor area), as determined by an FDA-approved test.
- Atezolizumab indicated for patients with locally advanced or metastatic urothelial carcinoma who are not eligible for cisplatin-containing chemotherapy.
- Pembrolizumab indicated for the treatment of patients with locally advanced or metastatic urothelial carcinoma who are not eligible for cisplatin-containing chemotherapy.
- Pembrolizumab indicated for the treatment of patients with recurrent locally advanced or metastatic gastric or gastroesophageal junction adenocarcinoma whose tumors express PD-L1 (Combined Positive Score ≥1), as determined by an FDA-approved test, with disease progression on or after two or more prior lines of therapy including fluoropyrimidine- and platinum-containing chemotherapy and if appropriate, HER2/neu-targeted therapy.
- Pembrolizumab indicated for the treatment of patients with who have been previously treated with .
- Nivolumab indicated as a single agent for the treatment of patients with hepatocellular carcinoma who have been previously treated with sorafenib.
A version of this article first appeared on Medscape.com.
Don’t delay: Cancer patients need both doses of COVID vaccine
The new findings, which are soon to be published as a preprint, cast doubt on the current U.K. policy of delaying the second dose of the vaccine.
Delaying the second dose can leave most patients with cancer wholly or partially unprotected, according to the researchers. Moreover, such a delay has implications for transmission of SARS-CoV-2 in the cancer patient’s environs as well as for the evolution of virus variants that could be of concern, the researchers concluded.
The data come from a British study that included 151 patients with cancer and 54 healthy control persons. All participants received the COVID-19 mRNA BNT162b2 vaccine (Pfizer-BioNTech).
This vaccine requires two doses. The first few participants in this study were given the second dose 21 days after they had received the first dose, but then national guidelines changed, and the remaining participants had to wait 12 weeks to receive their second dose.
The researchers reported that, among health controls, the immune efficacy of the first dose was very high (97% efficacious). By contrast, among patients with solid tumors, the immune efficacy of a single dose was strikingly low (39%), and it was even lower in patients with hematologic malignancies (13%).
The second dose of vaccine greatly and rapidly increased the immune efficacy in patients with solid tumors (95% within 2 weeks of receiving the second dose), the researchers added.
Too few patients with hematologic cancers had received the second dose before the study ended for clear conclusions to be drawn. Nevertheless, the available data suggest that 50% of patients with hematologic cancers who had received the booster at day 21 were seropositive at 5 weeks vs. only 8% of those who had not received the booster.
“Our data provide the first real-world evidence of immune efficacy following one dose of the Pfizer vaccine in immunocompromised patient populations [and] clearly show that the poor one-dose efficacy in cancer patients can be rescued with an early booster at day 21,” commented senior author Sheeba Irshad, MD, senior clinical lecturer, King’s College London.
“Based on our findings, we would recommend an urgent review of the vaccine strategy for clinically extremely vulnerable groups. Until then, it is important that cancer patients continue to observe all public health measures in place, such as social distancing and shielding when attending hospitals, even after vaccination,” Dr. Irshad added.
The paper, with first author Leticia Monin-Aldama, PhD, is scheduled to appear on the preprint server medRxiv. It has not undergone peer review. The paper was distributed to journalists, with comments from experts not involved in the study, by the UK Science Media Centre.
These data are “of immediate importance” to patients with cancer, commented Shoba Amarnath, PhD, Newcastle University research fellow, Laboratory of T-cell Regulation, Newcastle University Center for Cancer, Newcastle upon Tyne, England.
“These findings are consistent with our understanding. … We know that the immune system within cancer patients is compromised as compared to healthy controls,” Dr. Amarnath said. “The data in the study support the notion that, in solid cancer patients, a considerable delay in second dose will extend the period when cancer patients are at risk of SARS-CoV-2 infection.”
Although more data are required, “this study does raise the issue of whether patients with cancer, other diseases, or those undergoing therapies that affect the body’s immune response should be fast-tracked for their second vaccine dose,” commented Lawrence Young, PhD, professor of molecular oncology and director of the Warwick Cancer Research Center, University of Warwick, Coventry, England.
Stephen Evans, MSc, professor of pharmacoepidemiology, London School of Hygiene and Tropical Medicine, underlined that the study is “essentially” observational and “inevitable limitations must be taken into account.
“Nevertheless, these results do suggest that the vaccines may well not protect those patients with cancer as well as those without cancer,” Mr. Evans said. He added that it is “important that this population continues to observe all COVID-19–associated measures, such as social distancing and shielding when attending hospitals, even after vaccination.”
Study details
Previous studies have shown that some patients with cancer have prolonged responses to SARS-CoV-2 infection, with ongoing immune dysregulation, inefficient seroconversion, and prolonged viral shedding.
There are few data, however, on how these patients respond to COVID-19 vaccination. The authors point out that, among the 18,860 individuals who received the Pfizer vaccine during its development trials, “none with an active oncological diagnosis was included.”
To investigate this issue, they launched the SARS-CoV-2 for Cancer Patients (SOAP-02) study.
The 151 patients with cancer who participated in this study were mostly elderly, the authors noted (75% were older than 65 years; the median age was 73 years). The majority (63%) had solid-tumor malignancies. Of those, 8% had late-stage disease and had been living with their cancer for more than 24 months.
The healthy control persons were vaccine-eligible primary health care workers who were not age matched to the cancer patients.
All participants received the first dose of vaccine; 31 (of 151) patients with cancer and 16 (of 54) healthy control persons received the second dose on day 21.
The remaining participants were scheduled to receive their second dose 12 weeks later (after the study ended), in line with the changes in the national guidelines.
The team reported that, approximately 21 days after receiving the first vaccine dose, the immune efficacy of the vaccine was estimated to be 97% among healthy control persons vs. 39% for patients with solid tumors and only 13% for those with hematologic malignancies (P < .0001 for both).
T-cell responses, as assessed via interferon-gamma and/or interleukin-2 production, were observed in 82% of healthy control persons, 71% of patients with solid tumors, and 50% of those with hematologic cancers.
Vaccine boosting at day 21 resulted in immune efficacy of 100% for healthy control persons and 95% for patients with solid tumors. In contrast, only 43% of those who did not receive the second dose were seropositive 2 weeks later.
Further analysis suggested that participants who did not have a serologic response were “spread evenly” across different cancer types, but the reduced responses were more frequent among patients who had received the vaccine within 15 days of cancer treatment, especially chemotherapy, and had undergone intensive treatments.
The SOAP study is sponsored by King’s College London and Guy’s and St. Thomas Trust Foundation NHS Trust. It is funded from grants from the KCL Charity, Cancer Research UK, and program grants from Breast Cancer Now. The investigators have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
The new findings, which are soon to be published as a preprint, cast doubt on the current U.K. policy of delaying the second dose of the vaccine.
Delaying the second dose can leave most patients with cancer wholly or partially unprotected, according to the researchers. Moreover, such a delay has implications for transmission of SARS-CoV-2 in the cancer patient’s environs as well as for the evolution of virus variants that could be of concern, the researchers concluded.
The data come from a British study that included 151 patients with cancer and 54 healthy control persons. All participants received the COVID-19 mRNA BNT162b2 vaccine (Pfizer-BioNTech).
This vaccine requires two doses. The first few participants in this study were given the second dose 21 days after they had received the first dose, but then national guidelines changed, and the remaining participants had to wait 12 weeks to receive their second dose.
The researchers reported that, among health controls, the immune efficacy of the first dose was very high (97% efficacious). By contrast, among patients with solid tumors, the immune efficacy of a single dose was strikingly low (39%), and it was even lower in patients with hematologic malignancies (13%).
The second dose of vaccine greatly and rapidly increased the immune efficacy in patients with solid tumors (95% within 2 weeks of receiving the second dose), the researchers added.
Too few patients with hematologic cancers had received the second dose before the study ended for clear conclusions to be drawn. Nevertheless, the available data suggest that 50% of patients with hematologic cancers who had received the booster at day 21 were seropositive at 5 weeks vs. only 8% of those who had not received the booster.
“Our data provide the first real-world evidence of immune efficacy following one dose of the Pfizer vaccine in immunocompromised patient populations [and] clearly show that the poor one-dose efficacy in cancer patients can be rescued with an early booster at day 21,” commented senior author Sheeba Irshad, MD, senior clinical lecturer, King’s College London.
“Based on our findings, we would recommend an urgent review of the vaccine strategy for clinically extremely vulnerable groups. Until then, it is important that cancer patients continue to observe all public health measures in place, such as social distancing and shielding when attending hospitals, even after vaccination,” Dr. Irshad added.
The paper, with first author Leticia Monin-Aldama, PhD, is scheduled to appear on the preprint server medRxiv. It has not undergone peer review. The paper was distributed to journalists, with comments from experts not involved in the study, by the UK Science Media Centre.
These data are “of immediate importance” to patients with cancer, commented Shoba Amarnath, PhD, Newcastle University research fellow, Laboratory of T-cell Regulation, Newcastle University Center for Cancer, Newcastle upon Tyne, England.
“These findings are consistent with our understanding. … We know that the immune system within cancer patients is compromised as compared to healthy controls,” Dr. Amarnath said. “The data in the study support the notion that, in solid cancer patients, a considerable delay in second dose will extend the period when cancer patients are at risk of SARS-CoV-2 infection.”
Although more data are required, “this study does raise the issue of whether patients with cancer, other diseases, or those undergoing therapies that affect the body’s immune response should be fast-tracked for their second vaccine dose,” commented Lawrence Young, PhD, professor of molecular oncology and director of the Warwick Cancer Research Center, University of Warwick, Coventry, England.
Stephen Evans, MSc, professor of pharmacoepidemiology, London School of Hygiene and Tropical Medicine, underlined that the study is “essentially” observational and “inevitable limitations must be taken into account.
“Nevertheless, these results do suggest that the vaccines may well not protect those patients with cancer as well as those without cancer,” Mr. Evans said. He added that it is “important that this population continues to observe all COVID-19–associated measures, such as social distancing and shielding when attending hospitals, even after vaccination.”
Study details
Previous studies have shown that some patients with cancer have prolonged responses to SARS-CoV-2 infection, with ongoing immune dysregulation, inefficient seroconversion, and prolonged viral shedding.
There are few data, however, on how these patients respond to COVID-19 vaccination. The authors point out that, among the 18,860 individuals who received the Pfizer vaccine during its development trials, “none with an active oncological diagnosis was included.”
To investigate this issue, they launched the SARS-CoV-2 for Cancer Patients (SOAP-02) study.
The 151 patients with cancer who participated in this study were mostly elderly, the authors noted (75% were older than 65 years; the median age was 73 years). The majority (63%) had solid-tumor malignancies. Of those, 8% had late-stage disease and had been living with their cancer for more than 24 months.
The healthy control persons were vaccine-eligible primary health care workers who were not age matched to the cancer patients.
All participants received the first dose of vaccine; 31 (of 151) patients with cancer and 16 (of 54) healthy control persons received the second dose on day 21.
The remaining participants were scheduled to receive their second dose 12 weeks later (after the study ended), in line with the changes in the national guidelines.
The team reported that, approximately 21 days after receiving the first vaccine dose, the immune efficacy of the vaccine was estimated to be 97% among healthy control persons vs. 39% for patients with solid tumors and only 13% for those with hematologic malignancies (P < .0001 for both).
T-cell responses, as assessed via interferon-gamma and/or interleukin-2 production, were observed in 82% of healthy control persons, 71% of patients with solid tumors, and 50% of those with hematologic cancers.
Vaccine boosting at day 21 resulted in immune efficacy of 100% for healthy control persons and 95% for patients with solid tumors. In contrast, only 43% of those who did not receive the second dose were seropositive 2 weeks later.
Further analysis suggested that participants who did not have a serologic response were “spread evenly” across different cancer types, but the reduced responses were more frequent among patients who had received the vaccine within 15 days of cancer treatment, especially chemotherapy, and had undergone intensive treatments.
The SOAP study is sponsored by King’s College London and Guy’s and St. Thomas Trust Foundation NHS Trust. It is funded from grants from the KCL Charity, Cancer Research UK, and program grants from Breast Cancer Now. The investigators have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
The new findings, which are soon to be published as a preprint, cast doubt on the current U.K. policy of delaying the second dose of the vaccine.
Delaying the second dose can leave most patients with cancer wholly or partially unprotected, according to the researchers. Moreover, such a delay has implications for transmission of SARS-CoV-2 in the cancer patient’s environs as well as for the evolution of virus variants that could be of concern, the researchers concluded.
The data come from a British study that included 151 patients with cancer and 54 healthy control persons. All participants received the COVID-19 mRNA BNT162b2 vaccine (Pfizer-BioNTech).
This vaccine requires two doses. The first few participants in this study were given the second dose 21 days after they had received the first dose, but then national guidelines changed, and the remaining participants had to wait 12 weeks to receive their second dose.
The researchers reported that, among health controls, the immune efficacy of the first dose was very high (97% efficacious). By contrast, among patients with solid tumors, the immune efficacy of a single dose was strikingly low (39%), and it was even lower in patients with hematologic malignancies (13%).
The second dose of vaccine greatly and rapidly increased the immune efficacy in patients with solid tumors (95% within 2 weeks of receiving the second dose), the researchers added.
Too few patients with hematologic cancers had received the second dose before the study ended for clear conclusions to be drawn. Nevertheless, the available data suggest that 50% of patients with hematologic cancers who had received the booster at day 21 were seropositive at 5 weeks vs. only 8% of those who had not received the booster.
“Our data provide the first real-world evidence of immune efficacy following one dose of the Pfizer vaccine in immunocompromised patient populations [and] clearly show that the poor one-dose efficacy in cancer patients can be rescued with an early booster at day 21,” commented senior author Sheeba Irshad, MD, senior clinical lecturer, King’s College London.
“Based on our findings, we would recommend an urgent review of the vaccine strategy for clinically extremely vulnerable groups. Until then, it is important that cancer patients continue to observe all public health measures in place, such as social distancing and shielding when attending hospitals, even after vaccination,” Dr. Irshad added.
The paper, with first author Leticia Monin-Aldama, PhD, is scheduled to appear on the preprint server medRxiv. It has not undergone peer review. The paper was distributed to journalists, with comments from experts not involved in the study, by the UK Science Media Centre.
These data are “of immediate importance” to patients with cancer, commented Shoba Amarnath, PhD, Newcastle University research fellow, Laboratory of T-cell Regulation, Newcastle University Center for Cancer, Newcastle upon Tyne, England.
“These findings are consistent with our understanding. … We know that the immune system within cancer patients is compromised as compared to healthy controls,” Dr. Amarnath said. “The data in the study support the notion that, in solid cancer patients, a considerable delay in second dose will extend the period when cancer patients are at risk of SARS-CoV-2 infection.”
Although more data are required, “this study does raise the issue of whether patients with cancer, other diseases, or those undergoing therapies that affect the body’s immune response should be fast-tracked for their second vaccine dose,” commented Lawrence Young, PhD, professor of molecular oncology and director of the Warwick Cancer Research Center, University of Warwick, Coventry, England.
Stephen Evans, MSc, professor of pharmacoepidemiology, London School of Hygiene and Tropical Medicine, underlined that the study is “essentially” observational and “inevitable limitations must be taken into account.
“Nevertheless, these results do suggest that the vaccines may well not protect those patients with cancer as well as those without cancer,” Mr. Evans said. He added that it is “important that this population continues to observe all COVID-19–associated measures, such as social distancing and shielding when attending hospitals, even after vaccination.”
Study details
Previous studies have shown that some patients with cancer have prolonged responses to SARS-CoV-2 infection, with ongoing immune dysregulation, inefficient seroconversion, and prolonged viral shedding.
There are few data, however, on how these patients respond to COVID-19 vaccination. The authors point out that, among the 18,860 individuals who received the Pfizer vaccine during its development trials, “none with an active oncological diagnosis was included.”
To investigate this issue, they launched the SARS-CoV-2 for Cancer Patients (SOAP-02) study.
The 151 patients with cancer who participated in this study were mostly elderly, the authors noted (75% were older than 65 years; the median age was 73 years). The majority (63%) had solid-tumor malignancies. Of those, 8% had late-stage disease and had been living with their cancer for more than 24 months.
The healthy control persons were vaccine-eligible primary health care workers who were not age matched to the cancer patients.
All participants received the first dose of vaccine; 31 (of 151) patients with cancer and 16 (of 54) healthy control persons received the second dose on day 21.
The remaining participants were scheduled to receive their second dose 12 weeks later (after the study ended), in line with the changes in the national guidelines.
The team reported that, approximately 21 days after receiving the first vaccine dose, the immune efficacy of the vaccine was estimated to be 97% among healthy control persons vs. 39% for patients with solid tumors and only 13% for those with hematologic malignancies (P < .0001 for both).
T-cell responses, as assessed via interferon-gamma and/or interleukin-2 production, were observed in 82% of healthy control persons, 71% of patients with solid tumors, and 50% of those with hematologic cancers.
Vaccine boosting at day 21 resulted in immune efficacy of 100% for healthy control persons and 95% for patients with solid tumors. In contrast, only 43% of those who did not receive the second dose were seropositive 2 weeks later.
Further analysis suggested that participants who did not have a serologic response were “spread evenly” across different cancer types, but the reduced responses were more frequent among patients who had received the vaccine within 15 days of cancer treatment, especially chemotherapy, and had undergone intensive treatments.
The SOAP study is sponsored by King’s College London and Guy’s and St. Thomas Trust Foundation NHS Trust. It is funded from grants from the KCL Charity, Cancer Research UK, and program grants from Breast Cancer Now. The investigators have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
‘Phenomenal’ results with CAR T cells in R/R multiple myeloma
Patients with multiple myeloma that has continued to progress despite many lines of therapy have shown deep and durable responses to a new chimeric antigen receptor (CAR) T-cell therapy, idecabtagene vicleucel (ide-cel, under development by Bristol-Myers Squibb and Bluebird Bio).
An expert not involved in the trial described the results as “phenomenal.”
Krina Patel, MD, an associate professor in the department of lymphoma/myeloma at the University of Texas MD Anderson Cancer Center, Houston, said that “the response rate of 73% in a patient population with a median of six lines of therapy, and with one-third of those patients achieving a deep response of complete response or better, is phenomenal.”
“We are very excited as a myeloma community for this study of idecabtagene vicleucel for relapsed/refractory patients,” Dr. Patel said.
The new data on ide-cell, from a trial in 128 patients, were published Feb. 25 in the New England Journal of Medicine.
Lead investigator of the study Nikhil Munshi, MD, of Dana-Farber Cancer Institute, Boston, said: “The results of this trial represent a true turning point in the treatment of this disease. In my 30 years of treating myeloma, I have not seen any other therapy as effective in this group of patients.”
Both experts highlighted the poor prognosis for this population of relapsed/refractory patients. Recent decades have seen a flurry of new agents for myeloma, and there are now three main classes of agents: immunomodulatory agents, proteasome inhibitors, and anti-CD38 antibodies. Nevertheless, in some patients, the disease continues to progress. For patients who have failed all three classes of drugs, the median progression-free survival is about 3-4 months, with a median overall survival of 8-9 months.
Product is awaiting approval
Ide-cel is currently awaiting FDA approval, with a decision date slated for March 27.
Several CAR T-cell products are already marketed for use in certain leukemias and lymphomas, and there is another for use in multiple myeloma, ciltacabtagene autoleucel (cilta-cel, under development by Janssen), that is awaiting approval in Europe.
Strong and sustained responses
The trial involved 128 patients treated with ide-cel infusions. At the time of data cutoff for this report (Jan. 14, 2020), 62 patients remained in the primary study. Of the 128 treated patients, the median age was 61 years and the median time since diagnosis was 6 years. About half (51%) had a high tumor burden (≥50% bone marrow plasma cells), 39% had extramedullary disease, 16% had stage III disease, and 35% had a high-risk cytogenetic abnormality, defined as del(17p), t(4;14), or t(14;16).
Patients in the cohort had received a median of six previous antimyeloma regimens (range, 3-16), and most of the patients (120, 94%) had undergone autologous hematopoietic stem cell transplants. In addition, the majority of patients (84%) had disease that was triple refractory (to an immunomodulatory agent, a proteasome inhibitor, and an anti-CD38 antibody), 60% had disease that was penta exposed (to bortezomib, carfilzomib, lenalidomide, pomalidomide, and daratumumab), and 26% had disease that was penta refractory.
At a median follow-up of 13.3 months, 94 of 128 patients (73%) showed a response to therapy (P < .001), with 42 (33%) showing a complete or stringent complete response, and 67 patients (52%) showing a “very good partial response or better.”
Overall median progression-free survival was 8.8 months at the 450×106 dose but more than double that (20.2 months) for patients who achieved a complete or stringent complete response. Estimated median overall survival was 19.4 months, with an overall survival of 78% at 12 months. The authors noted that overall survival data are not yet mature.
After experiencing disease progression, 28 patients were retreated with ide-cel, with 6 patients showing a second response. The durations of response ranged from 1.9 to 6.8 months.
All patients in the cohort experienced adverse events, primarily grade 3 or 4 events that occurred in 127 patients (99%). The most common events reported were hematologic toxicities, including neutropenia in 114 patients (89%), anemia in 77 (60%), and thrombocytopenia in 67 (52%), and were at least partially related to the lymphodepleting chemotherapy administered before ide-cel infusion, the authors note. Cytokine-release syndrome occurred in 107 patients (84%), primarily grade 1 or 2.
“Results of the KarMMa study support substantial antitumor activity for ide-cel across a target dose range of 150×106 to 450×106 CAR+ T cells,” the authors conclude. “The 450×106 dose appeared to be somewhat more effective than the other doses.”
New option?
“What this study further highlights is that higher cell dose tends to increase cell expansion, which correlates to improved response and duration of response,” said Dr. Patel.
Importantly, multiple vulnerable subgroups experienced impressive outcomes, such as those who are older or with high risk or extramedullary disease, she noted.
“My patients who have undergone this therapy, albeit on other clinical trials, all say that their quality of life during this time of remission is priceless,” Dr. Patel added. “The is the first therapy in the relapsed/refractory setting that allows patients to have a significant chemo-free period. We need to find more ways to do this for our patients.”
The study was supported by Bluebird Bio and Bristol-Myers Squibb. Dr. Patel has served on the advisory board for Janssen and Bristol-Myers Squibb. She also reports a speaking engagement with Oncopeptides. Dr. Munshi acts as a consultant for several pharmaceutical companies, and many coauthors also have relationships with industry, as listed in the original article.
A version of this article first appeared on Medscape.com.
Patients with multiple myeloma that has continued to progress despite many lines of therapy have shown deep and durable responses to a new chimeric antigen receptor (CAR) T-cell therapy, idecabtagene vicleucel (ide-cel, under development by Bristol-Myers Squibb and Bluebird Bio).
An expert not involved in the trial described the results as “phenomenal.”
Krina Patel, MD, an associate professor in the department of lymphoma/myeloma at the University of Texas MD Anderson Cancer Center, Houston, said that “the response rate of 73% in a patient population with a median of six lines of therapy, and with one-third of those patients achieving a deep response of complete response or better, is phenomenal.”
“We are very excited as a myeloma community for this study of idecabtagene vicleucel for relapsed/refractory patients,” Dr. Patel said.
The new data on ide-cell, from a trial in 128 patients, were published Feb. 25 in the New England Journal of Medicine.
Lead investigator of the study Nikhil Munshi, MD, of Dana-Farber Cancer Institute, Boston, said: “The results of this trial represent a true turning point in the treatment of this disease. In my 30 years of treating myeloma, I have not seen any other therapy as effective in this group of patients.”
Both experts highlighted the poor prognosis for this population of relapsed/refractory patients. Recent decades have seen a flurry of new agents for myeloma, and there are now three main classes of agents: immunomodulatory agents, proteasome inhibitors, and anti-CD38 antibodies. Nevertheless, in some patients, the disease continues to progress. For patients who have failed all three classes of drugs, the median progression-free survival is about 3-4 months, with a median overall survival of 8-9 months.
Product is awaiting approval
Ide-cel is currently awaiting FDA approval, with a decision date slated for March 27.
Several CAR T-cell products are already marketed for use in certain leukemias and lymphomas, and there is another for use in multiple myeloma, ciltacabtagene autoleucel (cilta-cel, under development by Janssen), that is awaiting approval in Europe.
Strong and sustained responses
The trial involved 128 patients treated with ide-cel infusions. At the time of data cutoff for this report (Jan. 14, 2020), 62 patients remained in the primary study. Of the 128 treated patients, the median age was 61 years and the median time since diagnosis was 6 years. About half (51%) had a high tumor burden (≥50% bone marrow plasma cells), 39% had extramedullary disease, 16% had stage III disease, and 35% had a high-risk cytogenetic abnormality, defined as del(17p), t(4;14), or t(14;16).
Patients in the cohort had received a median of six previous antimyeloma regimens (range, 3-16), and most of the patients (120, 94%) had undergone autologous hematopoietic stem cell transplants. In addition, the majority of patients (84%) had disease that was triple refractory (to an immunomodulatory agent, a proteasome inhibitor, and an anti-CD38 antibody), 60% had disease that was penta exposed (to bortezomib, carfilzomib, lenalidomide, pomalidomide, and daratumumab), and 26% had disease that was penta refractory.
At a median follow-up of 13.3 months, 94 of 128 patients (73%) showed a response to therapy (P < .001), with 42 (33%) showing a complete or stringent complete response, and 67 patients (52%) showing a “very good partial response or better.”
Overall median progression-free survival was 8.8 months at the 450×106 dose but more than double that (20.2 months) for patients who achieved a complete or stringent complete response. Estimated median overall survival was 19.4 months, with an overall survival of 78% at 12 months. The authors noted that overall survival data are not yet mature.
After experiencing disease progression, 28 patients were retreated with ide-cel, with 6 patients showing a second response. The durations of response ranged from 1.9 to 6.8 months.
All patients in the cohort experienced adverse events, primarily grade 3 or 4 events that occurred in 127 patients (99%). The most common events reported were hematologic toxicities, including neutropenia in 114 patients (89%), anemia in 77 (60%), and thrombocytopenia in 67 (52%), and were at least partially related to the lymphodepleting chemotherapy administered before ide-cel infusion, the authors note. Cytokine-release syndrome occurred in 107 patients (84%), primarily grade 1 or 2.
“Results of the KarMMa study support substantial antitumor activity for ide-cel across a target dose range of 150×106 to 450×106 CAR+ T cells,” the authors conclude. “The 450×106 dose appeared to be somewhat more effective than the other doses.”
New option?
“What this study further highlights is that higher cell dose tends to increase cell expansion, which correlates to improved response and duration of response,” said Dr. Patel.
Importantly, multiple vulnerable subgroups experienced impressive outcomes, such as those who are older or with high risk or extramedullary disease, she noted.
“My patients who have undergone this therapy, albeit on other clinical trials, all say that their quality of life during this time of remission is priceless,” Dr. Patel added. “The is the first therapy in the relapsed/refractory setting that allows patients to have a significant chemo-free period. We need to find more ways to do this for our patients.”
The study was supported by Bluebird Bio and Bristol-Myers Squibb. Dr. Patel has served on the advisory board for Janssen and Bristol-Myers Squibb. She also reports a speaking engagement with Oncopeptides. Dr. Munshi acts as a consultant for several pharmaceutical companies, and many coauthors also have relationships with industry, as listed in the original article.
A version of this article first appeared on Medscape.com.
Patients with multiple myeloma that has continued to progress despite many lines of therapy have shown deep and durable responses to a new chimeric antigen receptor (CAR) T-cell therapy, idecabtagene vicleucel (ide-cel, under development by Bristol-Myers Squibb and Bluebird Bio).
An expert not involved in the trial described the results as “phenomenal.”
Krina Patel, MD, an associate professor in the department of lymphoma/myeloma at the University of Texas MD Anderson Cancer Center, Houston, said that “the response rate of 73% in a patient population with a median of six lines of therapy, and with one-third of those patients achieving a deep response of complete response or better, is phenomenal.”
“We are very excited as a myeloma community for this study of idecabtagene vicleucel for relapsed/refractory patients,” Dr. Patel said.
The new data on ide-cell, from a trial in 128 patients, were published Feb. 25 in the New England Journal of Medicine.
Lead investigator of the study Nikhil Munshi, MD, of Dana-Farber Cancer Institute, Boston, said: “The results of this trial represent a true turning point in the treatment of this disease. In my 30 years of treating myeloma, I have not seen any other therapy as effective in this group of patients.”
Both experts highlighted the poor prognosis for this population of relapsed/refractory patients. Recent decades have seen a flurry of new agents for myeloma, and there are now three main classes of agents: immunomodulatory agents, proteasome inhibitors, and anti-CD38 antibodies. Nevertheless, in some patients, the disease continues to progress. For patients who have failed all three classes of drugs, the median progression-free survival is about 3-4 months, with a median overall survival of 8-9 months.
Product is awaiting approval
Ide-cel is currently awaiting FDA approval, with a decision date slated for March 27.
Several CAR T-cell products are already marketed for use in certain leukemias and lymphomas, and there is another for use in multiple myeloma, ciltacabtagene autoleucel (cilta-cel, under development by Janssen), that is awaiting approval in Europe.
Strong and sustained responses
The trial involved 128 patients treated with ide-cel infusions. At the time of data cutoff for this report (Jan. 14, 2020), 62 patients remained in the primary study. Of the 128 treated patients, the median age was 61 years and the median time since diagnosis was 6 years. About half (51%) had a high tumor burden (≥50% bone marrow plasma cells), 39% had extramedullary disease, 16% had stage III disease, and 35% had a high-risk cytogenetic abnormality, defined as del(17p), t(4;14), or t(14;16).
Patients in the cohort had received a median of six previous antimyeloma regimens (range, 3-16), and most of the patients (120, 94%) had undergone autologous hematopoietic stem cell transplants. In addition, the majority of patients (84%) had disease that was triple refractory (to an immunomodulatory agent, a proteasome inhibitor, and an anti-CD38 antibody), 60% had disease that was penta exposed (to bortezomib, carfilzomib, lenalidomide, pomalidomide, and daratumumab), and 26% had disease that was penta refractory.
At a median follow-up of 13.3 months, 94 of 128 patients (73%) showed a response to therapy (P < .001), with 42 (33%) showing a complete or stringent complete response, and 67 patients (52%) showing a “very good partial response or better.”
Overall median progression-free survival was 8.8 months at the 450×106 dose but more than double that (20.2 months) for patients who achieved a complete or stringent complete response. Estimated median overall survival was 19.4 months, with an overall survival of 78% at 12 months. The authors noted that overall survival data are not yet mature.
After experiencing disease progression, 28 patients were retreated with ide-cel, with 6 patients showing a second response. The durations of response ranged from 1.9 to 6.8 months.
All patients in the cohort experienced adverse events, primarily grade 3 or 4 events that occurred in 127 patients (99%). The most common events reported were hematologic toxicities, including neutropenia in 114 patients (89%), anemia in 77 (60%), and thrombocytopenia in 67 (52%), and were at least partially related to the lymphodepleting chemotherapy administered before ide-cel infusion, the authors note. Cytokine-release syndrome occurred in 107 patients (84%), primarily grade 1 or 2.
“Results of the KarMMa study support substantial antitumor activity for ide-cel across a target dose range of 150×106 to 450×106 CAR+ T cells,” the authors conclude. “The 450×106 dose appeared to be somewhat more effective than the other doses.”
New option?
“What this study further highlights is that higher cell dose tends to increase cell expansion, which correlates to improved response and duration of response,” said Dr. Patel.
Importantly, multiple vulnerable subgroups experienced impressive outcomes, such as those who are older or with high risk or extramedullary disease, she noted.
“My patients who have undergone this therapy, albeit on other clinical trials, all say that their quality of life during this time of remission is priceless,” Dr. Patel added. “The is the first therapy in the relapsed/refractory setting that allows patients to have a significant chemo-free period. We need to find more ways to do this for our patients.”
The study was supported by Bluebird Bio and Bristol-Myers Squibb. Dr. Patel has served on the advisory board for Janssen and Bristol-Myers Squibb. She also reports a speaking engagement with Oncopeptides. Dr. Munshi acts as a consultant for several pharmaceutical companies, and many coauthors also have relationships with industry, as listed in the original article.
A version of this article first appeared on Medscape.com.
Steroid complications in GVHD common, boost costs of care
Steroids are usually the first choice of therapy for the treatment of patients with graft-vs.-host disease (GVHD), but complications from steroid use may carry a high financial cost, investigators caution.
Among 689 patients with a diagnosis of GVHD following a hematopoietic stem cell transplant (HSCT) who received steroids, 685 (97%) had at least one steroid-related complication, resulting in nearly $165,000 in mean health-care costs over 24 months, said Elizabeth J. Bell, PhD, MPH, an epidemiologist at Optum Inc.
“For both acute and chronic GVHD, the standard of care for first-line treatment is systemic steroids. The complications associated with steroid treatment are well known. However, the health-care resources utilized and the costs incurred by these patients are not well-quantified,” she said at the Transplantation & Cellular Therapies Meetings (Abstract 12).
Dr. Bell reported the results of a retrospective database analysis on costs associated with steroid complications in HSCT recipients at the meeting, which was held by the American Society for Blood and Marrow Transplantation and the Center for International Blood and Marrow Transplant Research.
She and colleagues from Optum, Incyte, and the University of Minnesota in Minneapolis looked at data on 689 patients with a diagnosis of GVHD after HSCT who received systemic steroids from July 1, 2010, through Aug. 31, 2019. The data were extracted from the Optum Research database, and included U.S. commercial and Medicare Advantage patients.
They looked at total complications and steroid-associated complications in each of four categories: infections; metabolic or endocrine complications (for example, diabetes, dyslipidemia); gastrointestinal (GI) complications (e.g., peptic ulcer disease); and bone or muscle complications (myopathy, etc).
They estimated costs based on International Classification of Diseases (ICD) codes for any steroid complications during the 24 months after steroid initiation, including those complications that may have been present at the time of GVHD diagnosis.
The median patient age was 55 years, and 60% of the sample were male. The mean Charlson Comorbidity Index score at baseline was 3.
Overall, 22% of patients had only acute GVHD, 21% had only chronic GVHD, and 39% had both acute and chronic disease. The GVHD type was unspecified in the remaining 18%.
The median time from GVHD diagnosis to initiating steroids was 30 days for patients with both acute and chronic disease, as well as those with both presentations. The median time to initiation was 36 days for patients with unspecified GVHD type.
The median cumulative duration of steroid use over 24 months was 62 days for patients with acute GVHD, 208 days for those with chronic GVHD, 166 days for those with both, and 74 days for patients with unspecified GVHD type.
As noted before, complications occurred in 97% of patients, with infections being the most common complications, occurring in 80% of patients, followed by metabolic/endocrine complications in 32%, gastrointestinal in 29%, and bone/muscle complications in 20%.
For the 665 patients who had any steroid-related complication, the mean costs of steroid-associated care in the 24 months after they were started on steroids was $164,787, and the median cost was $50,834.
Health care costs were highest among patients with infections, at a mean of $167,473, and a median of $57,680, followed by bone/muscle conditions ($75,289 and $2,057, respectively), GI conditions ($67,861 and $3,360), and metabolic or endocrine conditions ($47, 101 and $1,164).
In all categories, hospitalizations accounted for the large majority of costs.
Two-thirds (66%) of patients who experienced any steroid-related complication required hospitalization, primarily for infections.
Among all patients with complications, the median cumulative hospital stay over 24 months was 20 days, with bone/muscle complications and infections associated with a median of 19 and 18 days of hospitalization, respectively.
Dr. Bell acknowledged that the study was limited by use of ICD coding to identify steroid complication-related health-care utilization and costs, which can be imprecise, and by the fact that the analysis included only complications resulting in health care use as documented in medical claims. In addition, the investigators noted that they could not control for the possibility that steroids exacerbated conditions that existed at baseline.
“These findings emphasize the need to cautiously evaluate the treatment options for patients with GVHD. Future study with medical records is needed to provide insights on the clinical aspects of the complications (e.g., severity and suspected causality),” Dr. Bell and colleagues concluded in the study’s abstract.
Definitions questioned
An HSCT specialist approached for comment said that the findings of the study made sense, but she had questions regarding the study methodology.
“I would intuitively think that steroid-associated complications are a major cause of health care use in GVHD patients and it’s interesting to see that there is emerging data to support this hypothesis,” HSCT specialist Hélène Schoemans, MD of the University of Leuven, Belgium, said in an interview.
She noted, however, that “it is surprising that the period of steroid initiation was the same for acute and chronic GVHD,” and questioned whether that anomalous finding could be due to the study’s definition of acute and chronic GVHD or to how the period from baseline to steroid initiation was defined.
The questions about the definitions and timing of therapy make it uncertain as to whether the complications reported were caused by steroids or by some other factor, she suggested.
The study was supported by Optum Inc. Dr. Bell is an employee of the company, and a paid consultant of Incyte. Dr. Schoemans has received travel expenses from Celgene, Abbvie, and Incyte; is part of the advisory boards for Incyte; and has received speakers fees from Novartis, Incyte, Jazz Pharmaceuticals, and Takeda.
Steroids are usually the first choice of therapy for the treatment of patients with graft-vs.-host disease (GVHD), but complications from steroid use may carry a high financial cost, investigators caution.
Among 689 patients with a diagnosis of GVHD following a hematopoietic stem cell transplant (HSCT) who received steroids, 685 (97%) had at least one steroid-related complication, resulting in nearly $165,000 in mean health-care costs over 24 months, said Elizabeth J. Bell, PhD, MPH, an epidemiologist at Optum Inc.
“For both acute and chronic GVHD, the standard of care for first-line treatment is systemic steroids. The complications associated with steroid treatment are well known. However, the health-care resources utilized and the costs incurred by these patients are not well-quantified,” she said at the Transplantation & Cellular Therapies Meetings (Abstract 12).
Dr. Bell reported the results of a retrospective database analysis on costs associated with steroid complications in HSCT recipients at the meeting, which was held by the American Society for Blood and Marrow Transplantation and the Center for International Blood and Marrow Transplant Research.
She and colleagues from Optum, Incyte, and the University of Minnesota in Minneapolis looked at data on 689 patients with a diagnosis of GVHD after HSCT who received systemic steroids from July 1, 2010, through Aug. 31, 2019. The data were extracted from the Optum Research database, and included U.S. commercial and Medicare Advantage patients.
They looked at total complications and steroid-associated complications in each of four categories: infections; metabolic or endocrine complications (for example, diabetes, dyslipidemia); gastrointestinal (GI) complications (e.g., peptic ulcer disease); and bone or muscle complications (myopathy, etc).
They estimated costs based on International Classification of Diseases (ICD) codes for any steroid complications during the 24 months after steroid initiation, including those complications that may have been present at the time of GVHD diagnosis.
The median patient age was 55 years, and 60% of the sample were male. The mean Charlson Comorbidity Index score at baseline was 3.
Overall, 22% of patients had only acute GVHD, 21% had only chronic GVHD, and 39% had both acute and chronic disease. The GVHD type was unspecified in the remaining 18%.
The median time from GVHD diagnosis to initiating steroids was 30 days for patients with both acute and chronic disease, as well as those with both presentations. The median time to initiation was 36 days for patients with unspecified GVHD type.
The median cumulative duration of steroid use over 24 months was 62 days for patients with acute GVHD, 208 days for those with chronic GVHD, 166 days for those with both, and 74 days for patients with unspecified GVHD type.
As noted before, complications occurred in 97% of patients, with infections being the most common complications, occurring in 80% of patients, followed by metabolic/endocrine complications in 32%, gastrointestinal in 29%, and bone/muscle complications in 20%.
For the 665 patients who had any steroid-related complication, the mean costs of steroid-associated care in the 24 months after they were started on steroids was $164,787, and the median cost was $50,834.
Health care costs were highest among patients with infections, at a mean of $167,473, and a median of $57,680, followed by bone/muscle conditions ($75,289 and $2,057, respectively), GI conditions ($67,861 and $3,360), and metabolic or endocrine conditions ($47, 101 and $1,164).
In all categories, hospitalizations accounted for the large majority of costs.
Two-thirds (66%) of patients who experienced any steroid-related complication required hospitalization, primarily for infections.
Among all patients with complications, the median cumulative hospital stay over 24 months was 20 days, with bone/muscle complications and infections associated with a median of 19 and 18 days of hospitalization, respectively.
Dr. Bell acknowledged that the study was limited by use of ICD coding to identify steroid complication-related health-care utilization and costs, which can be imprecise, and by the fact that the analysis included only complications resulting in health care use as documented in medical claims. In addition, the investigators noted that they could not control for the possibility that steroids exacerbated conditions that existed at baseline.
“These findings emphasize the need to cautiously evaluate the treatment options for patients with GVHD. Future study with medical records is needed to provide insights on the clinical aspects of the complications (e.g., severity and suspected causality),” Dr. Bell and colleagues concluded in the study’s abstract.
Definitions questioned
An HSCT specialist approached for comment said that the findings of the study made sense, but she had questions regarding the study methodology.
“I would intuitively think that steroid-associated complications are a major cause of health care use in GVHD patients and it’s interesting to see that there is emerging data to support this hypothesis,” HSCT specialist Hélène Schoemans, MD of the University of Leuven, Belgium, said in an interview.
She noted, however, that “it is surprising that the period of steroid initiation was the same for acute and chronic GVHD,” and questioned whether that anomalous finding could be due to the study’s definition of acute and chronic GVHD or to how the period from baseline to steroid initiation was defined.
The questions about the definitions and timing of therapy make it uncertain as to whether the complications reported were caused by steroids or by some other factor, she suggested.
The study was supported by Optum Inc. Dr. Bell is an employee of the company, and a paid consultant of Incyte. Dr. Schoemans has received travel expenses from Celgene, Abbvie, and Incyte; is part of the advisory boards for Incyte; and has received speakers fees from Novartis, Incyte, Jazz Pharmaceuticals, and Takeda.
Steroids are usually the first choice of therapy for the treatment of patients with graft-vs.-host disease (GVHD), but complications from steroid use may carry a high financial cost, investigators caution.
Among 689 patients with a diagnosis of GVHD following a hematopoietic stem cell transplant (HSCT) who received steroids, 685 (97%) had at least one steroid-related complication, resulting in nearly $165,000 in mean health-care costs over 24 months, said Elizabeth J. Bell, PhD, MPH, an epidemiologist at Optum Inc.
“For both acute and chronic GVHD, the standard of care for first-line treatment is systemic steroids. The complications associated with steroid treatment are well known. However, the health-care resources utilized and the costs incurred by these patients are not well-quantified,” she said at the Transplantation & Cellular Therapies Meetings (Abstract 12).
Dr. Bell reported the results of a retrospective database analysis on costs associated with steroid complications in HSCT recipients at the meeting, which was held by the American Society for Blood and Marrow Transplantation and the Center for International Blood and Marrow Transplant Research.
She and colleagues from Optum, Incyte, and the University of Minnesota in Minneapolis looked at data on 689 patients with a diagnosis of GVHD after HSCT who received systemic steroids from July 1, 2010, through Aug. 31, 2019. The data were extracted from the Optum Research database, and included U.S. commercial and Medicare Advantage patients.
They looked at total complications and steroid-associated complications in each of four categories: infections; metabolic or endocrine complications (for example, diabetes, dyslipidemia); gastrointestinal (GI) complications (e.g., peptic ulcer disease); and bone or muscle complications (myopathy, etc).
They estimated costs based on International Classification of Diseases (ICD) codes for any steroid complications during the 24 months after steroid initiation, including those complications that may have been present at the time of GVHD diagnosis.
The median patient age was 55 years, and 60% of the sample were male. The mean Charlson Comorbidity Index score at baseline was 3.
Overall, 22% of patients had only acute GVHD, 21% had only chronic GVHD, and 39% had both acute and chronic disease. The GVHD type was unspecified in the remaining 18%.
The median time from GVHD diagnosis to initiating steroids was 30 days for patients with both acute and chronic disease, as well as those with both presentations. The median time to initiation was 36 days for patients with unspecified GVHD type.
The median cumulative duration of steroid use over 24 months was 62 days for patients with acute GVHD, 208 days for those with chronic GVHD, 166 days for those with both, and 74 days for patients with unspecified GVHD type.
As noted before, complications occurred in 97% of patients, with infections being the most common complications, occurring in 80% of patients, followed by metabolic/endocrine complications in 32%, gastrointestinal in 29%, and bone/muscle complications in 20%.
For the 665 patients who had any steroid-related complication, the mean costs of steroid-associated care in the 24 months after they were started on steroids was $164,787, and the median cost was $50,834.
Health care costs were highest among patients with infections, at a mean of $167,473, and a median of $57,680, followed by bone/muscle conditions ($75,289 and $2,057, respectively), GI conditions ($67,861 and $3,360), and metabolic or endocrine conditions ($47, 101 and $1,164).
In all categories, hospitalizations accounted for the large majority of costs.
Two-thirds (66%) of patients who experienced any steroid-related complication required hospitalization, primarily for infections.
Among all patients with complications, the median cumulative hospital stay over 24 months was 20 days, with bone/muscle complications and infections associated with a median of 19 and 18 days of hospitalization, respectively.
Dr. Bell acknowledged that the study was limited by use of ICD coding to identify steroid complication-related health-care utilization and costs, which can be imprecise, and by the fact that the analysis included only complications resulting in health care use as documented in medical claims. In addition, the investigators noted that they could not control for the possibility that steroids exacerbated conditions that existed at baseline.
“These findings emphasize the need to cautiously evaluate the treatment options for patients with GVHD. Future study with medical records is needed to provide insights on the clinical aspects of the complications (e.g., severity and suspected causality),” Dr. Bell and colleagues concluded in the study’s abstract.
Definitions questioned
An HSCT specialist approached for comment said that the findings of the study made sense, but she had questions regarding the study methodology.
“I would intuitively think that steroid-associated complications are a major cause of health care use in GVHD patients and it’s interesting to see that there is emerging data to support this hypothesis,” HSCT specialist Hélène Schoemans, MD of the University of Leuven, Belgium, said in an interview.
She noted, however, that “it is surprising that the period of steroid initiation was the same for acute and chronic GVHD,” and questioned whether that anomalous finding could be due to the study’s definition of acute and chronic GVHD or to how the period from baseline to steroid initiation was defined.
The questions about the definitions and timing of therapy make it uncertain as to whether the complications reported were caused by steroids or by some other factor, she suggested.
The study was supported by Optum Inc. Dr. Bell is an employee of the company, and a paid consultant of Incyte. Dr. Schoemans has received travel expenses from Celgene, Abbvie, and Incyte; is part of the advisory boards for Incyte; and has received speakers fees from Novartis, Incyte, Jazz Pharmaceuticals, and Takeda.
FROM TCT 2021
Chronic GVHD therapies offer hope for treating refractory disease
Despite improvements in prevention of graft-versus-host disease, chronic GVHD still occurs in 10%-50% of patients who undergo an allogeneic hematopoietic stem cell transplant, and these patients may require prolonged treatment with multiple lines of therapy, said a hematologist and transplant researcher.
“More effective, less toxic therapies for chronic GVHD are needed,” Stephanie Lee, MD, MPH, from the Fred Hutchinson Cancer Research Center in Seattle said at the Transplant & Cellular Therapies Meetings.
Dr. Lee reviewed clinical trials for chronic GVHD at the meeting held by the American Society for Blood and Marrow Transplantation and the Center for International Blood and Marrow Transplant Research.
Although the incidence of chronic GVHD has gradually declined over the last 40 years and both relapse-free and overall survival following a chronic GVHD diagnosis have improved, “for patients who are diagnosed with chronic GVHD, they still will see many lines of therapy and many years of therapy,” she said.
Among 148 patients with chronic GVHD treated at her center, for example, 66% went on to two lines of therapy, 50% went on to three lines, 37% required four lines of therapy, and 20% needed five lines or more.
Salvage therapies for patients with chronic GVHD have evolved away from immunomodulators and immunosuppressants in the early 1990s, toward monoclonal antibodies such as rituximab in the early 2000s, to interleukin-2 and to tyrosine kinase inhibitors such as ruxolitinib (Jakafi) and ibrutinib (Imbruvica).
There are currently 36 agents that are FDA approved for at least one indication and can also be prescribed for the treatment of chronic GVHD, Dr. Lee noted.
Treatment goals
Dr. Lee laid out six goals for treating patients with chronic GVHD. They include:
- Controlling current signs and symptoms, measured by response rates and patient-reported outcomes
- Preventing further tissue and organ damage
- Minimizing toxicity
- Maintaining graft-versus-tumor effect
- Achieving graft tolerance and stopping immunosuppression
- Decreasing nonrelapse mortality and improving survival
Active trials
Dr. Lee identified 33 trials with chronic GVHD as an indication that are currently recruiting, and an additional 13 trials that are active but closed to recruiting. The trials can be generally grouped by mechanism of action, and involve agents targeting T-regulatory cells, B cells and/or B-cell receptor (BCR) signaling, monocytes/macrophages, costimulatory blockage, a proteasome inhibition, Janus kinase (JAK) 1/2 inhibitors, ROCK2 inhibitors, hedgehog pathway inhibition, cellular therapy, and organ-targeted therapy.
Most of the trials have overall response rate as the primary endpoint, and all but five are currently in phase 1 or 2. The currently active phase 3 trials include two with ibrutinib, one with the investigational agent itacitinib, one with ruxolitinib, and one with mesenchymal stem cells.
“I’ll note that, when results are reported, the denominator really matters for the overall response rate, especially if you’re talking about small trials, because if you require the patient to be treated with an agent for a certain period of time, and you take out all the people who didn’t make it to that time point, then your overall response rate looks better,” she said.
BTK inhibitors
The first-in-class Bruton tyrosine kinase (BTK) inhibitor ibrutinib was the first and thus far only agent approved by the Food and Drug Administration for chronic GVHD. The approval was based on a single-arm, multicenter trial with 42 patients.
The ORR in this trial was 69%, consisting of 31% complete responses and 38% partial responses, with a duration of response longer than 10 months in slightly more than half of all patients. In all, 24% of patients had improvement of symptoms in two consecutive visits, and 29% continued on ibrutinib at the time of the primary analysis in 2017.
Based on these promising results, acalabrutinib, which is more potent and selective for BTK than ibrutinib, with no effect on either platelets or natural killer cells, is currently under investigation in a phase 2 trial in 50 patients at a dose of 100 mg orally twice daily.
JAK1/2 inhibition
The JAK1 inhibitor itacitinib failed to meet its primary ORR endpoint in the phase 3 GRAVITAS-301 study, according to a press release, but the manufacturer (Incyte) said that it is continuing its commitment to JAK inhibitors with ruxolitinib, which has shown activity against acute, steroid-refractory GVHD, and is being explored for prevention of chronic GVHD in the randomized, phase 3 REACH3 study.
The trial met its primary endpoint for a higher ORR at week 24 with ruxolitinib versus best available therapy, at 49.7% versus 25.6%, respectively, which translated into an odds ratio for response with the JAK inhibitor of 2.99 (P < .0001).
Selective T-cell expansion
Efavaleukin alfa is an IL-2-mutated protein (mutein), with a mutation in the IL-2RB-binding portion of IL-2 causing increased selectivity for regulatory T-cell expansion. It is bound to an IgG-Fc domain that is itself mutated, with reduced Fc receptor binding and IgG effector function to give it a longer half life. This agent is being studied in a phase 1/2 trial in a subcutaneous formulation delivered every 1 or 2 weeks to 68 patients.
Monocyte/macrophage depletion
Axatilimab is a high-affinity antibody targeting colony stimulating factor–1 receptor (CSF-1R) expressed on monocytes and macrophages. By blocking CSF-1R, it depletes circulation of nonclassical monocytes and prevents the differentiation and survival of M2 macrophages in tissue.
It is currently being investigated 30 patients in a phase 1/2 study in an intravenous formulation delivered over 30 minutes every 2-4 weeks.
Hedgehog pathway inhibition
There is evidence suggesting that hedgehog pathway inhibition can lessen fibrosis. Glasdegib (Daurismo) a potent selective oral inhibitor of the hedgehog signaling pathway, is approved for use with low-dose cytarabine for patients with newly diagnosed acute myeloid leukemia aged older than 75 years or have comorbidities precluding intensive chemotherapy.
This agent is associated with drug intolerance because of muscle spasms, dysgeusia, and alopecia, however.
The drug is currently in phase 1/2 at a dose of 50 mg orally per day in 20 patients.
ROCK2 inhibition
Belumosudil (formerly KD025) “appears to rebalance the immune system,” Dr. Lee said. Investigators think that the drug dampens an autoaggressive inflammatory response by selective inhibition of ROCK2.
This drug has been studied in a dose-escalation study and a phase 2 trial, in which 132 participants were randomized to receive belumosudil 200 mg either once or twice daily.
At a median follow-up of 8 months, the ORR with belumosudil 200 mg once and twice daily was 73% and 74%, respectively. Similar results were seen in patients who had previously received either ruxolitinib or ibrutinib. High response rates were seen in patients with severe chronic GVHD, involvement of four or more organs and a refractory response to their last line of therapy.
Hard-to-manage patients
“We’re very hopeful for many of these agents, but we have to acknowledge that there are still many management dilemmas, patients that we just don’t really know what to do with,” Dr. Lee said. “These include patients who have bad sclerosis and fasciitis, nonhealing skin ulcers, bronchiolitis obliterans, serositis that can be very difficult to manage, severe keratoconjunctivitis that can be eyesight threatening, nonhealing mouth ulcers, esophageal structures, and always patients who have frequent infections.
“We are hopeful that some these agents will be useful for our patients who have severe manifestations, but often the number of patients with these manifestations in the trials is too low to say something specific about them,” she added.
‘Exciting time’
“It’s an exciting time because there are a lot of different drugs that are being studied for chronic GVHD,” commented Betty Hamilton, MD, a hematologist/oncologist at the Cleveland Clinic.
“I think that where the field is going in terms of treatment is recognizing that chronic GVHD is a pretty heterogeneous disease, and we have to learn even more about the underlying biologic pathways to be able to determine which class of drugs to use and when,” she said in an interview.
She agreed with Dr. Lee that the goals of treating patients with chronic GVHD include improving symptoms and quality, preventing progression, ideally tapering patients off immunosuppression, and achieving a balance between preventing negative consequences of GVHD while maintain the benefits of a graft-versus-leukemia effect.
“In our center, drug choice is based on physician preference and comfort with how often they’ve used the drug, patients’ comorbidities, toxicities of the drug, and logistical considerations,” Dr. Hamilton said.
Dr. Lee disclosed consulting activities for Pfizer and Kadmon, travel and lodging from Amgen, and research funding from those companies and others. Dr. Hamilton disclosed consulting for Syndax and Incyte.
Despite improvements in prevention of graft-versus-host disease, chronic GVHD still occurs in 10%-50% of patients who undergo an allogeneic hematopoietic stem cell transplant, and these patients may require prolonged treatment with multiple lines of therapy, said a hematologist and transplant researcher.
“More effective, less toxic therapies for chronic GVHD are needed,” Stephanie Lee, MD, MPH, from the Fred Hutchinson Cancer Research Center in Seattle said at the Transplant & Cellular Therapies Meetings.
Dr. Lee reviewed clinical trials for chronic GVHD at the meeting held by the American Society for Blood and Marrow Transplantation and the Center for International Blood and Marrow Transplant Research.
Although the incidence of chronic GVHD has gradually declined over the last 40 years and both relapse-free and overall survival following a chronic GVHD diagnosis have improved, “for patients who are diagnosed with chronic GVHD, they still will see many lines of therapy and many years of therapy,” she said.
Among 148 patients with chronic GVHD treated at her center, for example, 66% went on to two lines of therapy, 50% went on to three lines, 37% required four lines of therapy, and 20% needed five lines or more.
Salvage therapies for patients with chronic GVHD have evolved away from immunomodulators and immunosuppressants in the early 1990s, toward monoclonal antibodies such as rituximab in the early 2000s, to interleukin-2 and to tyrosine kinase inhibitors such as ruxolitinib (Jakafi) and ibrutinib (Imbruvica).
There are currently 36 agents that are FDA approved for at least one indication and can also be prescribed for the treatment of chronic GVHD, Dr. Lee noted.
Treatment goals
Dr. Lee laid out six goals for treating patients with chronic GVHD. They include:
- Controlling current signs and symptoms, measured by response rates and patient-reported outcomes
- Preventing further tissue and organ damage
- Minimizing toxicity
- Maintaining graft-versus-tumor effect
- Achieving graft tolerance and stopping immunosuppression
- Decreasing nonrelapse mortality and improving survival
Active trials
Dr. Lee identified 33 trials with chronic GVHD as an indication that are currently recruiting, and an additional 13 trials that are active but closed to recruiting. The trials can be generally grouped by mechanism of action, and involve agents targeting T-regulatory cells, B cells and/or B-cell receptor (BCR) signaling, monocytes/macrophages, costimulatory blockage, a proteasome inhibition, Janus kinase (JAK) 1/2 inhibitors, ROCK2 inhibitors, hedgehog pathway inhibition, cellular therapy, and organ-targeted therapy.
Most of the trials have overall response rate as the primary endpoint, and all but five are currently in phase 1 or 2. The currently active phase 3 trials include two with ibrutinib, one with the investigational agent itacitinib, one with ruxolitinib, and one with mesenchymal stem cells.
“I’ll note that, when results are reported, the denominator really matters for the overall response rate, especially if you’re talking about small trials, because if you require the patient to be treated with an agent for a certain period of time, and you take out all the people who didn’t make it to that time point, then your overall response rate looks better,” she said.
BTK inhibitors
The first-in-class Bruton tyrosine kinase (BTK) inhibitor ibrutinib was the first and thus far only agent approved by the Food and Drug Administration for chronic GVHD. The approval was based on a single-arm, multicenter trial with 42 patients.
The ORR in this trial was 69%, consisting of 31% complete responses and 38% partial responses, with a duration of response longer than 10 months in slightly more than half of all patients. In all, 24% of patients had improvement of symptoms in two consecutive visits, and 29% continued on ibrutinib at the time of the primary analysis in 2017.
Based on these promising results, acalabrutinib, which is more potent and selective for BTK than ibrutinib, with no effect on either platelets or natural killer cells, is currently under investigation in a phase 2 trial in 50 patients at a dose of 100 mg orally twice daily.
JAK1/2 inhibition
The JAK1 inhibitor itacitinib failed to meet its primary ORR endpoint in the phase 3 GRAVITAS-301 study, according to a press release, but the manufacturer (Incyte) said that it is continuing its commitment to JAK inhibitors with ruxolitinib, which has shown activity against acute, steroid-refractory GVHD, and is being explored for prevention of chronic GVHD in the randomized, phase 3 REACH3 study.
The trial met its primary endpoint for a higher ORR at week 24 with ruxolitinib versus best available therapy, at 49.7% versus 25.6%, respectively, which translated into an odds ratio for response with the JAK inhibitor of 2.99 (P < .0001).
Selective T-cell expansion
Efavaleukin alfa is an IL-2-mutated protein (mutein), with a mutation in the IL-2RB-binding portion of IL-2 causing increased selectivity for regulatory T-cell expansion. It is bound to an IgG-Fc domain that is itself mutated, with reduced Fc receptor binding and IgG effector function to give it a longer half life. This agent is being studied in a phase 1/2 trial in a subcutaneous formulation delivered every 1 or 2 weeks to 68 patients.
Monocyte/macrophage depletion
Axatilimab is a high-affinity antibody targeting colony stimulating factor–1 receptor (CSF-1R) expressed on monocytes and macrophages. By blocking CSF-1R, it depletes circulation of nonclassical monocytes and prevents the differentiation and survival of M2 macrophages in tissue.
It is currently being investigated 30 patients in a phase 1/2 study in an intravenous formulation delivered over 30 minutes every 2-4 weeks.
Hedgehog pathway inhibition
There is evidence suggesting that hedgehog pathway inhibition can lessen fibrosis. Glasdegib (Daurismo) a potent selective oral inhibitor of the hedgehog signaling pathway, is approved for use with low-dose cytarabine for patients with newly diagnosed acute myeloid leukemia aged older than 75 years or have comorbidities precluding intensive chemotherapy.
This agent is associated with drug intolerance because of muscle spasms, dysgeusia, and alopecia, however.
The drug is currently in phase 1/2 at a dose of 50 mg orally per day in 20 patients.
ROCK2 inhibition
Belumosudil (formerly KD025) “appears to rebalance the immune system,” Dr. Lee said. Investigators think that the drug dampens an autoaggressive inflammatory response by selective inhibition of ROCK2.
This drug has been studied in a dose-escalation study and a phase 2 trial, in which 132 participants were randomized to receive belumosudil 200 mg either once or twice daily.
At a median follow-up of 8 months, the ORR with belumosudil 200 mg once and twice daily was 73% and 74%, respectively. Similar results were seen in patients who had previously received either ruxolitinib or ibrutinib. High response rates were seen in patients with severe chronic GVHD, involvement of four or more organs and a refractory response to their last line of therapy.
Hard-to-manage patients
“We’re very hopeful for many of these agents, but we have to acknowledge that there are still many management dilemmas, patients that we just don’t really know what to do with,” Dr. Lee said. “These include patients who have bad sclerosis and fasciitis, nonhealing skin ulcers, bronchiolitis obliterans, serositis that can be very difficult to manage, severe keratoconjunctivitis that can be eyesight threatening, nonhealing mouth ulcers, esophageal structures, and always patients who have frequent infections.
“We are hopeful that some these agents will be useful for our patients who have severe manifestations, but often the number of patients with these manifestations in the trials is too low to say something specific about them,” she added.
‘Exciting time’
“It’s an exciting time because there are a lot of different drugs that are being studied for chronic GVHD,” commented Betty Hamilton, MD, a hematologist/oncologist at the Cleveland Clinic.
“I think that where the field is going in terms of treatment is recognizing that chronic GVHD is a pretty heterogeneous disease, and we have to learn even more about the underlying biologic pathways to be able to determine which class of drugs to use and when,” she said in an interview.
She agreed with Dr. Lee that the goals of treating patients with chronic GVHD include improving symptoms and quality, preventing progression, ideally tapering patients off immunosuppression, and achieving a balance between preventing negative consequences of GVHD while maintain the benefits of a graft-versus-leukemia effect.
“In our center, drug choice is based on physician preference and comfort with how often they’ve used the drug, patients’ comorbidities, toxicities of the drug, and logistical considerations,” Dr. Hamilton said.
Dr. Lee disclosed consulting activities for Pfizer and Kadmon, travel and lodging from Amgen, and research funding from those companies and others. Dr. Hamilton disclosed consulting for Syndax and Incyte.
Despite improvements in prevention of graft-versus-host disease, chronic GVHD still occurs in 10%-50% of patients who undergo an allogeneic hematopoietic stem cell transplant, and these patients may require prolonged treatment with multiple lines of therapy, said a hematologist and transplant researcher.
“More effective, less toxic therapies for chronic GVHD are needed,” Stephanie Lee, MD, MPH, from the Fred Hutchinson Cancer Research Center in Seattle said at the Transplant & Cellular Therapies Meetings.
Dr. Lee reviewed clinical trials for chronic GVHD at the meeting held by the American Society for Blood and Marrow Transplantation and the Center for International Blood and Marrow Transplant Research.
Although the incidence of chronic GVHD has gradually declined over the last 40 years and both relapse-free and overall survival following a chronic GVHD diagnosis have improved, “for patients who are diagnosed with chronic GVHD, they still will see many lines of therapy and many years of therapy,” she said.
Among 148 patients with chronic GVHD treated at her center, for example, 66% went on to two lines of therapy, 50% went on to three lines, 37% required four lines of therapy, and 20% needed five lines or more.
Salvage therapies for patients with chronic GVHD have evolved away from immunomodulators and immunosuppressants in the early 1990s, toward monoclonal antibodies such as rituximab in the early 2000s, to interleukin-2 and to tyrosine kinase inhibitors such as ruxolitinib (Jakafi) and ibrutinib (Imbruvica).
There are currently 36 agents that are FDA approved for at least one indication and can also be prescribed for the treatment of chronic GVHD, Dr. Lee noted.
Treatment goals
Dr. Lee laid out six goals for treating patients with chronic GVHD. They include:
- Controlling current signs and symptoms, measured by response rates and patient-reported outcomes
- Preventing further tissue and organ damage
- Minimizing toxicity
- Maintaining graft-versus-tumor effect
- Achieving graft tolerance and stopping immunosuppression
- Decreasing nonrelapse mortality and improving survival
Active trials
Dr. Lee identified 33 trials with chronic GVHD as an indication that are currently recruiting, and an additional 13 trials that are active but closed to recruiting. The trials can be generally grouped by mechanism of action, and involve agents targeting T-regulatory cells, B cells and/or B-cell receptor (BCR) signaling, monocytes/macrophages, costimulatory blockage, a proteasome inhibition, Janus kinase (JAK) 1/2 inhibitors, ROCK2 inhibitors, hedgehog pathway inhibition, cellular therapy, and organ-targeted therapy.
Most of the trials have overall response rate as the primary endpoint, and all but five are currently in phase 1 or 2. The currently active phase 3 trials include two with ibrutinib, one with the investigational agent itacitinib, one with ruxolitinib, and one with mesenchymal stem cells.
“I’ll note that, when results are reported, the denominator really matters for the overall response rate, especially if you’re talking about small trials, because if you require the patient to be treated with an agent for a certain period of time, and you take out all the people who didn’t make it to that time point, then your overall response rate looks better,” she said.
BTK inhibitors
The first-in-class Bruton tyrosine kinase (BTK) inhibitor ibrutinib was the first and thus far only agent approved by the Food and Drug Administration for chronic GVHD. The approval was based on a single-arm, multicenter trial with 42 patients.
The ORR in this trial was 69%, consisting of 31% complete responses and 38% partial responses, with a duration of response longer than 10 months in slightly more than half of all patients. In all, 24% of patients had improvement of symptoms in two consecutive visits, and 29% continued on ibrutinib at the time of the primary analysis in 2017.
Based on these promising results, acalabrutinib, which is more potent and selective for BTK than ibrutinib, with no effect on either platelets or natural killer cells, is currently under investigation in a phase 2 trial in 50 patients at a dose of 100 mg orally twice daily.
JAK1/2 inhibition
The JAK1 inhibitor itacitinib failed to meet its primary ORR endpoint in the phase 3 GRAVITAS-301 study, according to a press release, but the manufacturer (Incyte) said that it is continuing its commitment to JAK inhibitors with ruxolitinib, which has shown activity against acute, steroid-refractory GVHD, and is being explored for prevention of chronic GVHD in the randomized, phase 3 REACH3 study.
The trial met its primary endpoint for a higher ORR at week 24 with ruxolitinib versus best available therapy, at 49.7% versus 25.6%, respectively, which translated into an odds ratio for response with the JAK inhibitor of 2.99 (P < .0001).
Selective T-cell expansion
Efavaleukin alfa is an IL-2-mutated protein (mutein), with a mutation in the IL-2RB-binding portion of IL-2 causing increased selectivity for regulatory T-cell expansion. It is bound to an IgG-Fc domain that is itself mutated, with reduced Fc receptor binding and IgG effector function to give it a longer half life. This agent is being studied in a phase 1/2 trial in a subcutaneous formulation delivered every 1 or 2 weeks to 68 patients.
Monocyte/macrophage depletion
Axatilimab is a high-affinity antibody targeting colony stimulating factor–1 receptor (CSF-1R) expressed on monocytes and macrophages. By blocking CSF-1R, it depletes circulation of nonclassical monocytes and prevents the differentiation and survival of M2 macrophages in tissue.
It is currently being investigated 30 patients in a phase 1/2 study in an intravenous formulation delivered over 30 minutes every 2-4 weeks.
Hedgehog pathway inhibition
There is evidence suggesting that hedgehog pathway inhibition can lessen fibrosis. Glasdegib (Daurismo) a potent selective oral inhibitor of the hedgehog signaling pathway, is approved for use with low-dose cytarabine for patients with newly diagnosed acute myeloid leukemia aged older than 75 years or have comorbidities precluding intensive chemotherapy.
This agent is associated with drug intolerance because of muscle spasms, dysgeusia, and alopecia, however.
The drug is currently in phase 1/2 at a dose of 50 mg orally per day in 20 patients.
ROCK2 inhibition
Belumosudil (formerly KD025) “appears to rebalance the immune system,” Dr. Lee said. Investigators think that the drug dampens an autoaggressive inflammatory response by selective inhibition of ROCK2.
This drug has been studied in a dose-escalation study and a phase 2 trial, in which 132 participants were randomized to receive belumosudil 200 mg either once or twice daily.
At a median follow-up of 8 months, the ORR with belumosudil 200 mg once and twice daily was 73% and 74%, respectively. Similar results were seen in patients who had previously received either ruxolitinib or ibrutinib. High response rates were seen in patients with severe chronic GVHD, involvement of four or more organs and a refractory response to their last line of therapy.
Hard-to-manage patients
“We’re very hopeful for many of these agents, but we have to acknowledge that there are still many management dilemmas, patients that we just don’t really know what to do with,” Dr. Lee said. “These include patients who have bad sclerosis and fasciitis, nonhealing skin ulcers, bronchiolitis obliterans, serositis that can be very difficult to manage, severe keratoconjunctivitis that can be eyesight threatening, nonhealing mouth ulcers, esophageal structures, and always patients who have frequent infections.
“We are hopeful that some these agents will be useful for our patients who have severe manifestations, but often the number of patients with these manifestations in the trials is too low to say something specific about them,” she added.
‘Exciting time’
“It’s an exciting time because there are a lot of different drugs that are being studied for chronic GVHD,” commented Betty Hamilton, MD, a hematologist/oncologist at the Cleveland Clinic.
“I think that where the field is going in terms of treatment is recognizing that chronic GVHD is a pretty heterogeneous disease, and we have to learn even more about the underlying biologic pathways to be able to determine which class of drugs to use and when,” she said in an interview.
She agreed with Dr. Lee that the goals of treating patients with chronic GVHD include improving symptoms and quality, preventing progression, ideally tapering patients off immunosuppression, and achieving a balance between preventing negative consequences of GVHD while maintain the benefits of a graft-versus-leukemia effect.
“In our center, drug choice is based on physician preference and comfort with how often they’ve used the drug, patients’ comorbidities, toxicities of the drug, and logistical considerations,” Dr. Hamilton said.
Dr. Lee disclosed consulting activities for Pfizer and Kadmon, travel and lodging from Amgen, and research funding from those companies and others. Dr. Hamilton disclosed consulting for Syndax and Incyte.
FROM TCT 2021
Caregiver burden of outpatient ASCT for multiple myeloma comparable with inpatient transplant
Tending to patients who opt for outpatient autologous stem cell transplants is well tolerated by caregivers, so long as they have the resources and support necessary, according to a recent Italian report.
Investigators surveyed the primary caregivers – most often the spouse – of 25 multiple myeloma patients who, in consultation with their caregiver, opted for an outpatient procedure and 71 others who chose standard inpatient treatment, and compared the results. Outpatients were discharged a day after transplant with twice-weekly clinic visits until sustained hematologic recovery as reported in Clinical Lymphoma, Myeloma and Leukemia.
The teams used portions of the Caregiver Reaction Assessment survey that focused on self-reported sense of family support plus affect on daily activities and general health. Surveys were taken a week before transplant and 3 months afterwards.
Results did not differ significantly between outpatient and inpatient caregivers at either point, and there was no meaningful change in responses over time.
“The outpatient model neither improves nor impairs global caregivers’ burden, compared with” inpatient transplant. Outpatient caregivers “do not show that they suffer from a greater burden of responsibility as compared to those belonging to the inpatient’s arm,” said investigators led by Massimo Martino, MD, director of stem cell transplants at the Great Metropolitan Hospital in Reggio Calabria, Italy, where the patients were treated.
The relatively short-lasting neutropenia and the limited nonhematologic toxicity of high-dose melphalan make multiple myeloma good candidates for outpatient programs. Indeed, the incidence rate of mucositis, fever, chemotherapy-induced nausea and vomiting, and other adverse events did not differ between in and outpatients, which is in keeping with previous reports supporting the feasibility and safety of outpatient programs.
However, the burden on loved ones is considerable. At least during the aplastic phase, outpatient caregivers are on call around the clock and spend most of their time with the patient. Homes have to be kept meticulously clean, vital signs checked, medications administered, and ins and outs monitored, among other duties normally handled by inpatient staff.
The main limit of the study was that outpatients were a self-selected group. They and their caregivers may simply have had the resources and support needed for successful outpatient transplants, while other patients did not. As the investigators put it, “we cannot exclude the problem of residual confounding due to unmeasured variables” such as “factors underlying patients’ preference, which could potentially impact the study results.”
Administering the follow-up survey 3 months after transplant might also have missed the acute impact on outpatient caregivers. It’s been “reported that the quality of life of patients undergoing an” outpatient procedure decreases immediately post treatment but bounces back by 6 months. “The same result can probably be observed in caregivers,” the team said.
The outpatient and inpatient groups were comparable, with a majority of men and a mean age of about 60 years in both. The number of infused stem cells, engraftment kinetics, and hematopoietic cell transplantation–comorbidity index scores did not differ significantly between the two groups.
There was no funding for the work, and the investigators reported that they didn’t have any conflicts of interest.
SOURCE: Martino M et al. Clin Lymphoma Myeloma Leuk. 2020 Nov 19. doi: 10.1016/j.clml.2020.11.011.
Tending to patients who opt for outpatient autologous stem cell transplants is well tolerated by caregivers, so long as they have the resources and support necessary, according to a recent Italian report.
Investigators surveyed the primary caregivers – most often the spouse – of 25 multiple myeloma patients who, in consultation with their caregiver, opted for an outpatient procedure and 71 others who chose standard inpatient treatment, and compared the results. Outpatients were discharged a day after transplant with twice-weekly clinic visits until sustained hematologic recovery as reported in Clinical Lymphoma, Myeloma and Leukemia.
The teams used portions of the Caregiver Reaction Assessment survey that focused on self-reported sense of family support plus affect on daily activities and general health. Surveys were taken a week before transplant and 3 months afterwards.
Results did not differ significantly between outpatient and inpatient caregivers at either point, and there was no meaningful change in responses over time.
“The outpatient model neither improves nor impairs global caregivers’ burden, compared with” inpatient transplant. Outpatient caregivers “do not show that they suffer from a greater burden of responsibility as compared to those belonging to the inpatient’s arm,” said investigators led by Massimo Martino, MD, director of stem cell transplants at the Great Metropolitan Hospital in Reggio Calabria, Italy, where the patients were treated.
The relatively short-lasting neutropenia and the limited nonhematologic toxicity of high-dose melphalan make multiple myeloma good candidates for outpatient programs. Indeed, the incidence rate of mucositis, fever, chemotherapy-induced nausea and vomiting, and other adverse events did not differ between in and outpatients, which is in keeping with previous reports supporting the feasibility and safety of outpatient programs.
However, the burden on loved ones is considerable. At least during the aplastic phase, outpatient caregivers are on call around the clock and spend most of their time with the patient. Homes have to be kept meticulously clean, vital signs checked, medications administered, and ins and outs monitored, among other duties normally handled by inpatient staff.
The main limit of the study was that outpatients were a self-selected group. They and their caregivers may simply have had the resources and support needed for successful outpatient transplants, while other patients did not. As the investigators put it, “we cannot exclude the problem of residual confounding due to unmeasured variables” such as “factors underlying patients’ preference, which could potentially impact the study results.”
Administering the follow-up survey 3 months after transplant might also have missed the acute impact on outpatient caregivers. It’s been “reported that the quality of life of patients undergoing an” outpatient procedure decreases immediately post treatment but bounces back by 6 months. “The same result can probably be observed in caregivers,” the team said.
The outpatient and inpatient groups were comparable, with a majority of men and a mean age of about 60 years in both. The number of infused stem cells, engraftment kinetics, and hematopoietic cell transplantation–comorbidity index scores did not differ significantly between the two groups.
There was no funding for the work, and the investigators reported that they didn’t have any conflicts of interest.
SOURCE: Martino M et al. Clin Lymphoma Myeloma Leuk. 2020 Nov 19. doi: 10.1016/j.clml.2020.11.011.
Tending to patients who opt for outpatient autologous stem cell transplants is well tolerated by caregivers, so long as they have the resources and support necessary, according to a recent Italian report.
Investigators surveyed the primary caregivers – most often the spouse – of 25 multiple myeloma patients who, in consultation with their caregiver, opted for an outpatient procedure and 71 others who chose standard inpatient treatment, and compared the results. Outpatients were discharged a day after transplant with twice-weekly clinic visits until sustained hematologic recovery as reported in Clinical Lymphoma, Myeloma and Leukemia.
The teams used portions of the Caregiver Reaction Assessment survey that focused on self-reported sense of family support plus affect on daily activities and general health. Surveys were taken a week before transplant and 3 months afterwards.
Results did not differ significantly between outpatient and inpatient caregivers at either point, and there was no meaningful change in responses over time.
“The outpatient model neither improves nor impairs global caregivers’ burden, compared with” inpatient transplant. Outpatient caregivers “do not show that they suffer from a greater burden of responsibility as compared to those belonging to the inpatient’s arm,” said investigators led by Massimo Martino, MD, director of stem cell transplants at the Great Metropolitan Hospital in Reggio Calabria, Italy, where the patients were treated.
The relatively short-lasting neutropenia and the limited nonhematologic toxicity of high-dose melphalan make multiple myeloma good candidates for outpatient programs. Indeed, the incidence rate of mucositis, fever, chemotherapy-induced nausea and vomiting, and other adverse events did not differ between in and outpatients, which is in keeping with previous reports supporting the feasibility and safety of outpatient programs.
However, the burden on loved ones is considerable. At least during the aplastic phase, outpatient caregivers are on call around the clock and spend most of their time with the patient. Homes have to be kept meticulously clean, vital signs checked, medications administered, and ins and outs monitored, among other duties normally handled by inpatient staff.
The main limit of the study was that outpatients were a self-selected group. They and their caregivers may simply have had the resources and support needed for successful outpatient transplants, while other patients did not. As the investigators put it, “we cannot exclude the problem of residual confounding due to unmeasured variables” such as “factors underlying patients’ preference, which could potentially impact the study results.”
Administering the follow-up survey 3 months after transplant might also have missed the acute impact on outpatient caregivers. It’s been “reported that the quality of life of patients undergoing an” outpatient procedure decreases immediately post treatment but bounces back by 6 months. “The same result can probably be observed in caregivers,” the team said.
The outpatient and inpatient groups were comparable, with a majority of men and a mean age of about 60 years in both. The number of infused stem cells, engraftment kinetics, and hematopoietic cell transplantation–comorbidity index scores did not differ significantly between the two groups.
There was no funding for the work, and the investigators reported that they didn’t have any conflicts of interest.
SOURCE: Martino M et al. Clin Lymphoma Myeloma Leuk. 2020 Nov 19. doi: 10.1016/j.clml.2020.11.011.
FROM CLINICAL LYMPHOMA, MYELOMA AND LEUKEMIA
Study found dual-targeted CAR T highly active against relapsed/refractory multiple myeloma
An investigational chimeric antigen receptor T-cell (CAR T-cell) construct targeting two antigens on multiple myeloma cells showed promise in a first-in-humans trial, investigators said.
Among 16 patients with relapsed/refractory, heavily pretreated multiple myeloma who received the dual-targeting construct GC012F, the overall response rate was 93.8%, and all of six patients who received the cells at the highest of three dose levels had stringent complete responses (sCR) and were negative for minimal residual disease (MRD) at 6 months follow-up, reported Weijun Fu, MD, PhD, from Shanghai (China) Changzheng Hospital in an oral abstract presented during the virtual American Society of Hematology annual meeting.
GC012F is a novel CAR-T cell platform targeting both the B-cell maturation antigen (BCMA), which is universally expressed on malignant plasma cells, and CD19, which is expressed on both multiple myeloma cells and progenitors, Dr. Fu said.
“Targeting CD19 can trigger elimination of malignant cells by CAR T. Our preclinical work demonstrated more effective elimination of multiple myeloma clone-forming cells by BCMA and CD19 dual CAR T, so targeting both BCMA and CD19 antigens could improve efficacy and reduce relapse,” he said.
The construct is created using the FasTCAR platform that, according to manufacturer Gracell Biotechnologies (Shanghai), allows for cell culturing and expansion within 24-36 hours, rather than 2-3 weeks required for other CAR T-cell products.
Investigator-initiated trial
In a phase 1 investigator-initiated trial, 16 patients with a median age of 56 (range 27-71) years were enrolled. The patients all had relapsed or refractory multiple myeloma according to 2016 International Myeloma Working Group criteria, with a life expectancy of at least 3 months and adequate organ function.
The median time since diagnosis was 3 years (range 1-10). All but one of the 16 patients had high-risk disease, 3 had double-hit disease (the presence of two deletions, gain of function, or p53 mutation), and 5 patients had one or more extramedullary plasmacytomas. Four of the patients had received therapy with an anti-CD38 monoclonal antibody.
Following lymphodepletion with fludarabine and cyclophosphamide, the patients received the CAR T cells in a single infusion at dose levels of either 1, 2, or 3 times 105 cells/kg.
As of the cutoff date in July 2020, 15 of the 16 patients had a clinical response, including 9 with a CR or sCR, and 6 with a very good partial response (VGPR). As noted before, all of the six patients treated at the highest dose level had a sCR. At the median follow-up of 7.3 months, the median duration of response had not been reached.
Among all patients evaluable for response at month 1 (14 patients), 11 were MRD negative by flow cytometry. At month 3 all 11 evaluable patients were MRD negative, and all of 10 patients evaluable at 6 months were also MRD negative.
As with other CAR T-cell constructs, all patients developed the cytokine-release syndrome (CRS), with grade 1 or 2 severity in 14 patients, and grade 3 in 2 patients. The median time to onset of CRS was 6 days (range 2-10), and the median duration was 4 days (range 1-8 days).
No cases of immune effector cell–associated neurotoxicity syndrome (ICANS) were observed.
One patient treated at the middle dose level presented with fever and died shortly after day 78 of an unknown cause during the COVID-19 pandemic. Two patients died of extramedullary disease; each had achieved MRD negativity.
Investigators continue to follow the patients and are enrolling new patients in the ongoing study.
‘Interesting approach’
Sandy W. Wong, MD, from the Helen Diller Family Comprehensive Cancer Center at the University of California San Francisco, who was not involved in the study, said in an interview that the dual-targeted approach is interesting, in light of a case report presented at ASH 2020 of a patient with multiple myeloma who had a partial response to CAR T-cell therapy with a different construct and who developed a subsequent biallelic loss of BCMA that resulted in resistance to CAR T-cell therapy.
“This raises the idea that, if we perhaps had a dual-targeted CAR T, perhaps we will prolong progression-free survival, in order to avoid antigen escape. So I do think the concept is very interesting and does deserve further study,” she said.
CD19 is thought to be expressed on myeloma stem cells, “so the question is: Are patients not being cured because there is a reservoir of myeloma cells, and targeting CD19 is thought to get at this putative myeloma stem cell? but that remains to be seen,” she added.
Dr. Wong comoderated the session where Dr. Fu presented the data.
The study was supported by participating medical centers and Gracell Biotechnologies. Dr. Fu and Dr. Wong reported no relevant conflicts of interest to disclose.
SOURCE: Jiang H et al. ASH 2020, Abstract 178.
An investigational chimeric antigen receptor T-cell (CAR T-cell) construct targeting two antigens on multiple myeloma cells showed promise in a first-in-humans trial, investigators said.
Among 16 patients with relapsed/refractory, heavily pretreated multiple myeloma who received the dual-targeting construct GC012F, the overall response rate was 93.8%, and all of six patients who received the cells at the highest of three dose levels had stringent complete responses (sCR) and were negative for minimal residual disease (MRD) at 6 months follow-up, reported Weijun Fu, MD, PhD, from Shanghai (China) Changzheng Hospital in an oral abstract presented during the virtual American Society of Hematology annual meeting.
GC012F is a novel CAR-T cell platform targeting both the B-cell maturation antigen (BCMA), which is universally expressed on malignant plasma cells, and CD19, which is expressed on both multiple myeloma cells and progenitors, Dr. Fu said.
“Targeting CD19 can trigger elimination of malignant cells by CAR T. Our preclinical work demonstrated more effective elimination of multiple myeloma clone-forming cells by BCMA and CD19 dual CAR T, so targeting both BCMA and CD19 antigens could improve efficacy and reduce relapse,” he said.
The construct is created using the FasTCAR platform that, according to manufacturer Gracell Biotechnologies (Shanghai), allows for cell culturing and expansion within 24-36 hours, rather than 2-3 weeks required for other CAR T-cell products.
Investigator-initiated trial
In a phase 1 investigator-initiated trial, 16 patients with a median age of 56 (range 27-71) years were enrolled. The patients all had relapsed or refractory multiple myeloma according to 2016 International Myeloma Working Group criteria, with a life expectancy of at least 3 months and adequate organ function.
The median time since diagnosis was 3 years (range 1-10). All but one of the 16 patients had high-risk disease, 3 had double-hit disease (the presence of two deletions, gain of function, or p53 mutation), and 5 patients had one or more extramedullary plasmacytomas. Four of the patients had received therapy with an anti-CD38 monoclonal antibody.
Following lymphodepletion with fludarabine and cyclophosphamide, the patients received the CAR T cells in a single infusion at dose levels of either 1, 2, or 3 times 105 cells/kg.
As of the cutoff date in July 2020, 15 of the 16 patients had a clinical response, including 9 with a CR or sCR, and 6 with a very good partial response (VGPR). As noted before, all of the six patients treated at the highest dose level had a sCR. At the median follow-up of 7.3 months, the median duration of response had not been reached.
Among all patients evaluable for response at month 1 (14 patients), 11 were MRD negative by flow cytometry. At month 3 all 11 evaluable patients were MRD negative, and all of 10 patients evaluable at 6 months were also MRD negative.
As with other CAR T-cell constructs, all patients developed the cytokine-release syndrome (CRS), with grade 1 or 2 severity in 14 patients, and grade 3 in 2 patients. The median time to onset of CRS was 6 days (range 2-10), and the median duration was 4 days (range 1-8 days).
No cases of immune effector cell–associated neurotoxicity syndrome (ICANS) were observed.
One patient treated at the middle dose level presented with fever and died shortly after day 78 of an unknown cause during the COVID-19 pandemic. Two patients died of extramedullary disease; each had achieved MRD negativity.
Investigators continue to follow the patients and are enrolling new patients in the ongoing study.
‘Interesting approach’
Sandy W. Wong, MD, from the Helen Diller Family Comprehensive Cancer Center at the University of California San Francisco, who was not involved in the study, said in an interview that the dual-targeted approach is interesting, in light of a case report presented at ASH 2020 of a patient with multiple myeloma who had a partial response to CAR T-cell therapy with a different construct and who developed a subsequent biallelic loss of BCMA that resulted in resistance to CAR T-cell therapy.
“This raises the idea that, if we perhaps had a dual-targeted CAR T, perhaps we will prolong progression-free survival, in order to avoid antigen escape. So I do think the concept is very interesting and does deserve further study,” she said.
CD19 is thought to be expressed on myeloma stem cells, “so the question is: Are patients not being cured because there is a reservoir of myeloma cells, and targeting CD19 is thought to get at this putative myeloma stem cell? but that remains to be seen,” she added.
Dr. Wong comoderated the session where Dr. Fu presented the data.
The study was supported by participating medical centers and Gracell Biotechnologies. Dr. Fu and Dr. Wong reported no relevant conflicts of interest to disclose.
SOURCE: Jiang H et al. ASH 2020, Abstract 178.
An investigational chimeric antigen receptor T-cell (CAR T-cell) construct targeting two antigens on multiple myeloma cells showed promise in a first-in-humans trial, investigators said.
Among 16 patients with relapsed/refractory, heavily pretreated multiple myeloma who received the dual-targeting construct GC012F, the overall response rate was 93.8%, and all of six patients who received the cells at the highest of three dose levels had stringent complete responses (sCR) and were negative for minimal residual disease (MRD) at 6 months follow-up, reported Weijun Fu, MD, PhD, from Shanghai (China) Changzheng Hospital in an oral abstract presented during the virtual American Society of Hematology annual meeting.
GC012F is a novel CAR-T cell platform targeting both the B-cell maturation antigen (BCMA), which is universally expressed on malignant plasma cells, and CD19, which is expressed on both multiple myeloma cells and progenitors, Dr. Fu said.
“Targeting CD19 can trigger elimination of malignant cells by CAR T. Our preclinical work demonstrated more effective elimination of multiple myeloma clone-forming cells by BCMA and CD19 dual CAR T, so targeting both BCMA and CD19 antigens could improve efficacy and reduce relapse,” he said.
The construct is created using the FasTCAR platform that, according to manufacturer Gracell Biotechnologies (Shanghai), allows for cell culturing and expansion within 24-36 hours, rather than 2-3 weeks required for other CAR T-cell products.
Investigator-initiated trial
In a phase 1 investigator-initiated trial, 16 patients with a median age of 56 (range 27-71) years were enrolled. The patients all had relapsed or refractory multiple myeloma according to 2016 International Myeloma Working Group criteria, with a life expectancy of at least 3 months and adequate organ function.
The median time since diagnosis was 3 years (range 1-10). All but one of the 16 patients had high-risk disease, 3 had double-hit disease (the presence of two deletions, gain of function, or p53 mutation), and 5 patients had one or more extramedullary plasmacytomas. Four of the patients had received therapy with an anti-CD38 monoclonal antibody.
Following lymphodepletion with fludarabine and cyclophosphamide, the patients received the CAR T cells in a single infusion at dose levels of either 1, 2, or 3 times 105 cells/kg.
As of the cutoff date in July 2020, 15 of the 16 patients had a clinical response, including 9 with a CR or sCR, and 6 with a very good partial response (VGPR). As noted before, all of the six patients treated at the highest dose level had a sCR. At the median follow-up of 7.3 months, the median duration of response had not been reached.
Among all patients evaluable for response at month 1 (14 patients), 11 were MRD negative by flow cytometry. At month 3 all 11 evaluable patients were MRD negative, and all of 10 patients evaluable at 6 months were also MRD negative.
As with other CAR T-cell constructs, all patients developed the cytokine-release syndrome (CRS), with grade 1 or 2 severity in 14 patients, and grade 3 in 2 patients. The median time to onset of CRS was 6 days (range 2-10), and the median duration was 4 days (range 1-8 days).
No cases of immune effector cell–associated neurotoxicity syndrome (ICANS) were observed.
One patient treated at the middle dose level presented with fever and died shortly after day 78 of an unknown cause during the COVID-19 pandemic. Two patients died of extramedullary disease; each had achieved MRD negativity.
Investigators continue to follow the patients and are enrolling new patients in the ongoing study.
‘Interesting approach’
Sandy W. Wong, MD, from the Helen Diller Family Comprehensive Cancer Center at the University of California San Francisco, who was not involved in the study, said in an interview that the dual-targeted approach is interesting, in light of a case report presented at ASH 2020 of a patient with multiple myeloma who had a partial response to CAR T-cell therapy with a different construct and who developed a subsequent biallelic loss of BCMA that resulted in resistance to CAR T-cell therapy.
“This raises the idea that, if we perhaps had a dual-targeted CAR T, perhaps we will prolong progression-free survival, in order to avoid antigen escape. So I do think the concept is very interesting and does deserve further study,” she said.
CD19 is thought to be expressed on myeloma stem cells, “so the question is: Are patients not being cured because there is a reservoir of myeloma cells, and targeting CD19 is thought to get at this putative myeloma stem cell? but that remains to be seen,” she added.
Dr. Wong comoderated the session where Dr. Fu presented the data.
The study was supported by participating medical centers and Gracell Biotechnologies. Dr. Fu and Dr. Wong reported no relevant conflicts of interest to disclose.
SOURCE: Jiang H et al. ASH 2020, Abstract 178.
FROM ASH 2020