VIDEO: Checkpoint inhibitors show few efficacy, safety differences

Availability, convenience may drive drug selection
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– The two subclasses of immune checkpoint inhibitor drugs showed very little basis for choosing between them by either efficacy or toxicity in a systematic review of 23 trials run in patients with non–small cell lung cancer during 2013-2016.

For efficacy, inhibitors of the programmed death (PD-1) receptors had a 19% overall response rate when averaged from 12 different trials with 3,284 patients on one of these drugs. The PD-ligand 1 (PD-L1) inhibitors produced a 17% overall response rate in 11 trials with 2,615 patients on one of the drugs, a between-class efficacy difference that was not statistically significant, Rathi N. Pillai, MD, said at the World Conference on Lung Cancer, sponsored by the International Association for the Study of Lung Cancer.

Mitchel L. Zoler/Frontline Medical News
Dr. Rathi N. Pillai
In the safety analysis, the PD-1 and PD-L1 subclasses had statistically insignificant differences in the total rate of adverse effects (72% with PD-1 inhibitors and 65% with the PD-L1 inhibitors), virtually identical rates of higher-grade adverse events, and also very similar rates of the most common adverse events. The most common adverse event was fatigue, which affected 19% of patients on a PD-1 inhibitor and 21% of patients on a PD-L1 inhibitor, reported Dr. Pillai, a medical oncologist at Emory University, Atlanta. The two subclasses also showed very similar rates of the next most common adverse events, diarrhea and rash.

Immune-related adverse events were significantly more common in the patients treated with PD-1 inhibitors: 16%, compared with 11% in the PD-L1 inhibitor-treated patients (P = .04). The two subclasses also showed a trend toward a difference in the most common immune-related adverse event, hypothyroidism, with an incidence of 6.7% with PD-1 inhibitors and 4.2% with PD-L1 inhibitors (P = .07). The two sets of patients showed a statistically significant difference in the next most common immune-related adverse event, pneunomitis, 4.0% with PD-1 inhibitors and 2.0% with PD-L1 inhibitors (P = .02).

The trials with PD-1 inhibitors included nivolumab (Opdivo) and pembrolizumab (Keytruda). The trials with PD-L1 inhibitors included atezolizumab (Tecentriq), durvalumab, and avelumab. The total rate of all adverse events was highest among patients on nivolumab, 76%, and lowest among patients on durvalumab, 61%.

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This very important systematic review with data from a total of nearly 6,000 patients shows that severe toxicity is unusual with the PD-1 and PD-L1 inhibitors, and they result in no meaningful difference in response rates. The toxicities seen with these drugs are milder and less frequent than we see with standard chemotherapy drugs. The severe autoimmune toxicities seen are a major concern but are manageable and occurred at low rates.

In general, efficacy and toxicity does not appear to form a basis by which to choose among these drugs. Fatigue was the most common adverse event, which is surprising to see with these drugs although we are accustomed to seeing it in patients on standard chemotherapy. Fatigue can be a major issue for patients, even if it is relatively mild, because they remain on these drugs for periods as long as 2 years.

If the PD-1 and PD-L1 inhibitors continue to perform with similar efficacy and safety profiles, clinicians will be forced to turn to other parameters when trying to decide which drug specifically to prescribe. This can include issues of cost, reimbursement, and dosing convenience. Nivolumab, for example, has been administered more often, every 2 weeks, than the other drugs in these classes. Oncologists are trying to develop effective regimens with these drugs that can be given once every 3 or every 4 weeks. Future investigations may also look at the possibility of treating patients with these drugs initially for 6 months, and then scaling back to retreatment only when there is disease progression. If this approach is successful, it would obviate concerns about causing long-term fatigue or the inconvenience of more frequent treatment schedules.

We also need to continue to monitor and compare the toxicities of these immune checkpoint inhibitors as we move into using them in combination regimens.

Paul Mitchell, MD, is a medical oncologist at the Olivia Newton-John Cancer and Wellness Centre in Heidelberg, Australia. He has served on advisory boards for AstraZeneca, Boehringer Ingelheim, BMS, Celgene, Merck/MSD, Merck Serono, and Roche, and he has received honoraria from Merck and Roche, and he has received travel grants from BMS and Roche. He made these comments as the designated discussant for the report and in a video interview.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel
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This very important systematic review with data from a total of nearly 6,000 patients shows that severe toxicity is unusual with the PD-1 and PD-L1 inhibitors, and they result in no meaningful difference in response rates. The toxicities seen with these drugs are milder and less frequent than we see with standard chemotherapy drugs. The severe autoimmune toxicities seen are a major concern but are manageable and occurred at low rates.

In general, efficacy and toxicity does not appear to form a basis by which to choose among these drugs. Fatigue was the most common adverse event, which is surprising to see with these drugs although we are accustomed to seeing it in patients on standard chemotherapy. Fatigue can be a major issue for patients, even if it is relatively mild, because they remain on these drugs for periods as long as 2 years.

If the PD-1 and PD-L1 inhibitors continue to perform with similar efficacy and safety profiles, clinicians will be forced to turn to other parameters when trying to decide which drug specifically to prescribe. This can include issues of cost, reimbursement, and dosing convenience. Nivolumab, for example, has been administered more often, every 2 weeks, than the other drugs in these classes. Oncologists are trying to develop effective regimens with these drugs that can be given once every 3 or every 4 weeks. Future investigations may also look at the possibility of treating patients with these drugs initially for 6 months, and then scaling back to retreatment only when there is disease progression. If this approach is successful, it would obviate concerns about causing long-term fatigue or the inconvenience of more frequent treatment schedules.

We also need to continue to monitor and compare the toxicities of these immune checkpoint inhibitors as we move into using them in combination regimens.

Paul Mitchell, MD, is a medical oncologist at the Olivia Newton-John Cancer and Wellness Centre in Heidelberg, Australia. He has served on advisory boards for AstraZeneca, Boehringer Ingelheim, BMS, Celgene, Merck/MSD, Merck Serono, and Roche, and he has received honoraria from Merck and Roche, and he has received travel grants from BMS and Roche. He made these comments as the designated discussant for the report and in a video interview.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel
Body

 

This very important systematic review with data from a total of nearly 6,000 patients shows that severe toxicity is unusual with the PD-1 and PD-L1 inhibitors, and they result in no meaningful difference in response rates. The toxicities seen with these drugs are milder and less frequent than we see with standard chemotherapy drugs. The severe autoimmune toxicities seen are a major concern but are manageable and occurred at low rates.

In general, efficacy and toxicity does not appear to form a basis by which to choose among these drugs. Fatigue was the most common adverse event, which is surprising to see with these drugs although we are accustomed to seeing it in patients on standard chemotherapy. Fatigue can be a major issue for patients, even if it is relatively mild, because they remain on these drugs for periods as long as 2 years.

If the PD-1 and PD-L1 inhibitors continue to perform with similar efficacy and safety profiles, clinicians will be forced to turn to other parameters when trying to decide which drug specifically to prescribe. This can include issues of cost, reimbursement, and dosing convenience. Nivolumab, for example, has been administered more often, every 2 weeks, than the other drugs in these classes. Oncologists are trying to develop effective regimens with these drugs that can be given once every 3 or every 4 weeks. Future investigations may also look at the possibility of treating patients with these drugs initially for 6 months, and then scaling back to retreatment only when there is disease progression. If this approach is successful, it would obviate concerns about causing long-term fatigue or the inconvenience of more frequent treatment schedules.

We also need to continue to monitor and compare the toxicities of these immune checkpoint inhibitors as we move into using them in combination regimens.

Paul Mitchell, MD, is a medical oncologist at the Olivia Newton-John Cancer and Wellness Centre in Heidelberg, Australia. He has served on advisory boards for AstraZeneca, Boehringer Ingelheim, BMS, Celgene, Merck/MSD, Merck Serono, and Roche, and he has received honoraria from Merck and Roche, and he has received travel grants from BMS and Roche. He made these comments as the designated discussant for the report and in a video interview.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel
Title
Availability, convenience may drive drug selection
Availability, convenience may drive drug selection

 

– The two subclasses of immune checkpoint inhibitor drugs showed very little basis for choosing between them by either efficacy or toxicity in a systematic review of 23 trials run in patients with non–small cell lung cancer during 2013-2016.

For efficacy, inhibitors of the programmed death (PD-1) receptors had a 19% overall response rate when averaged from 12 different trials with 3,284 patients on one of these drugs. The PD-ligand 1 (PD-L1) inhibitors produced a 17% overall response rate in 11 trials with 2,615 patients on one of the drugs, a between-class efficacy difference that was not statistically significant, Rathi N. Pillai, MD, said at the World Conference on Lung Cancer, sponsored by the International Association for the Study of Lung Cancer.

Mitchel L. Zoler/Frontline Medical News
Dr. Rathi N. Pillai
In the safety analysis, the PD-1 and PD-L1 subclasses had statistically insignificant differences in the total rate of adverse effects (72% with PD-1 inhibitors and 65% with the PD-L1 inhibitors), virtually identical rates of higher-grade adverse events, and also very similar rates of the most common adverse events. The most common adverse event was fatigue, which affected 19% of patients on a PD-1 inhibitor and 21% of patients on a PD-L1 inhibitor, reported Dr. Pillai, a medical oncologist at Emory University, Atlanta. The two subclasses also showed very similar rates of the next most common adverse events, diarrhea and rash.

Immune-related adverse events were significantly more common in the patients treated with PD-1 inhibitors: 16%, compared with 11% in the PD-L1 inhibitor-treated patients (P = .04). The two subclasses also showed a trend toward a difference in the most common immune-related adverse event, hypothyroidism, with an incidence of 6.7% with PD-1 inhibitors and 4.2% with PD-L1 inhibitors (P = .07). The two sets of patients showed a statistically significant difference in the next most common immune-related adverse event, pneunomitis, 4.0% with PD-1 inhibitors and 2.0% with PD-L1 inhibitors (P = .02).

The trials with PD-1 inhibitors included nivolumab (Opdivo) and pembrolizumab (Keytruda). The trials with PD-L1 inhibitors included atezolizumab (Tecentriq), durvalumab, and avelumab. The total rate of all adverse events was highest among patients on nivolumab, 76%, and lowest among patients on durvalumab, 61%.

 

– The two subclasses of immune checkpoint inhibitor drugs showed very little basis for choosing between them by either efficacy or toxicity in a systematic review of 23 trials run in patients with non–small cell lung cancer during 2013-2016.

For efficacy, inhibitors of the programmed death (PD-1) receptors had a 19% overall response rate when averaged from 12 different trials with 3,284 patients on one of these drugs. The PD-ligand 1 (PD-L1) inhibitors produced a 17% overall response rate in 11 trials with 2,615 patients on one of the drugs, a between-class efficacy difference that was not statistically significant, Rathi N. Pillai, MD, said at the World Conference on Lung Cancer, sponsored by the International Association for the Study of Lung Cancer.

Mitchel L. Zoler/Frontline Medical News
Dr. Rathi N. Pillai
In the safety analysis, the PD-1 and PD-L1 subclasses had statistically insignificant differences in the total rate of adverse effects (72% with PD-1 inhibitors and 65% with the PD-L1 inhibitors), virtually identical rates of higher-grade adverse events, and also very similar rates of the most common adverse events. The most common adverse event was fatigue, which affected 19% of patients on a PD-1 inhibitor and 21% of patients on a PD-L1 inhibitor, reported Dr. Pillai, a medical oncologist at Emory University, Atlanta. The two subclasses also showed very similar rates of the next most common adverse events, diarrhea and rash.

Immune-related adverse events were significantly more common in the patients treated with PD-1 inhibitors: 16%, compared with 11% in the PD-L1 inhibitor-treated patients (P = .04). The two subclasses also showed a trend toward a difference in the most common immune-related adverse event, hypothyroidism, with an incidence of 6.7% with PD-1 inhibitors and 4.2% with PD-L1 inhibitors (P = .07). The two sets of patients showed a statistically significant difference in the next most common immune-related adverse event, pneunomitis, 4.0% with PD-1 inhibitors and 2.0% with PD-L1 inhibitors (P = .02).

The trials with PD-1 inhibitors included nivolumab (Opdivo) and pembrolizumab (Keytruda). The trials with PD-L1 inhibitors included atezolizumab (Tecentriq), durvalumab, and avelumab. The total rate of all adverse events was highest among patients on nivolumab, 76%, and lowest among patients on durvalumab, 61%.

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Key clinical point: A systematic review of 23 recent trials showed little difference among several immune checkpoint inhibitors for efficacy or safety when treating patients with non–small cell lung cancer.

Major finding: Overall response rates were 19% using a PD-1 inhibitor and 17% when using a PD-L1 inhibitor.

Data source: A systematic review of 23 trials in patients with non–small cell lung cancer published during 2013-2016.

Disclosures: Dr. Pillai had no disclosures.

Nivolumab plus ipilimumab shines as first-line in advanced NSCLC

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– The combination of nivolumab and ipilimumab as first-line therapy in patients with advanced non–small cell lung cancer (NSCLC) doubled median progression-free survival time compared with nivolumab monotherapy in updated results from the CheckMate 012 trial, Scott N. Gettinger, MD, reported at the World Congress on Lung Cancer.

This doubling of progression-free survival (PFS) applied to all comers regardless of whether or not their tumor expressed programmed death-ligand 1 (PD-L1). In those patients with any degree of PD-L1 expression – even if just 1% of tumor cells stained positive – combination therapy didn’t just double median PFS, it tripled it, compared with nivolumab alone, added Dr. Gettinger of the Yale Cancer Center in New Haven, Conn.

Bruce Jancin/Frontline Medical News
Dr. Scott N. Gettinger
“Response rates seemed to go up as PD-L1 expression went up,” he said at the meeting sponsored by the International Association for the Study of Lung Cancer.

CheckMate 012 is a phase I study of nivolumab as first-line therapy for advanced NSCLC with numerous treatment arms. Dr. Gettinger presented updated results for 52 patients who received intravenous nivolumab monotherapy at a dose of 3 mg/kg every 2 weeks, 36 patients on nivolumab plus intravenous ipilimumab at 1 mg/kg every 12 weeks, and 39 who received nivolumab plus ipilimumab every 6 weeks. None of the participants had prior chemotherapy for their advanced stage IIIb or IV NSCLC.

Median PFS in the overall study population was 3.6 months with nivolumab monotherapy and 8.0 months with combination therapy. In the roughly 70% of participants who had any degree of tumor PD-L1 expression, median PFS was 3.5 months with monotherapy, compared with 12.7 months in the combined dual therapy arms. And, in the roughly one-quarter of patients whose tumor showed at least 50% PD-L1 expression, median PFS rose to 8.3 months with nivolumab monotherapy and hasn’t yet been reached in patients on combination therapy.

The 1-year overall survival rate in patients on nivolumab monotherapy was 73% in all treated patients, 69% in those with any detectable tumor PD-L1 expression, and 83% in patients with at least 50% PD-L1 expression. In patients on combination therapy, the corresponding figures were higher at 76%, 87%, and 100%.

The clearly enhanced efficacy achieved with the combination of nivolumab plus ipilimumab was accomplished with only a modest increase in toxicity compared with nivolumab alone. At a median follow-up of 22 months in the nivolumab monotherapy group and 16 months for combination therapy, the rate of any treatment-related adverse event leading to study withdrawal was 12% with monotherapy and 18% with combination therapy.

The combination of nivolumab (Opdivo), a PD-L1 immune checkpoint inhibitor, and ipilimumab (Yervoy), a cytotoxic T-lymphocyte–associated protein 4 immune checkpoint inhibitor, is biologically attractive: “The ipilimumab primes the immune system by inducing tumor infiltration of effector T cells while depleting the number of myeloid-derived suppressor cells and suppressive regulatory T cells within the tumor microenvironment,” Dr. Gettinger explained.

Nivolumab is approved for treatment of advanced NSCLC that has progressed despite platinum-based chemotherapy. Of the various toxicities associated with the drug, only dermatologic and GI adverse events occurred more frequently with combination therapy than nivolumab alone.

There were five complete responses in the nivolumab monotherapy group and six with combination therapy. Of note, four of these complete responses occurred in patients without any measurable tumor PD-L1 expression.

Based upon these encouraging results from CheckMate 012, a phase III randomized clinical trial of nivolumab as first-line therapy in patients with advanced NSCLC is underway. In the CheckMate 227 trial, patients with any detectable PD-L1 expression are randomized to nivolumab at 3mg/kg every 2 weeks plus ipilimumab at 1 mg/kg every 6 weeks, nivolumab monotherapy at 240 mg every 2 weeks, or standard platinum-based chemotherapy. Patients with no PD-L1 expression in their tumor are assigned to the nivolumab/ipilimumab combination, or nivolumab at 360 mg every 3 weeks plus chemotherapy, or chemotherapy alone.

Dr. Edward B. Garon
Discussant Edward B. Garon, MD, said that most observers believe the two-drug nivolumab/ipilimumab immunotherapy combination will sail through phase III studies. They think it will become the new standard approach to first-line therapy of advanced NSCLC, pushing aside pembrolizumab (Keytruda), a PD-1 receptor inhibitor that has been approved as first-line therapy in patients with advanced NSCLC, albeit with the restriction that they must have at least 50% tumor PD-L1 expression. But he is less certain of this scenario than are many of his colleagues.

“I think we should be cautious despite the excitement about the combination,” argued Dr. Garon, director of thoracic oncology at the University of California, Los Angeles.

He noted that various iterations of the large CheckMate 012 phase I program have been presented repeatedly at major meetings, and the shifting data have raised concerns in his mind about possible patient selection bias stemming from the study design.

“From my perspective, until we see randomized data that can control for these biases, I will remain hopeful but not yet extremely confident that this combination will be the new frontline therapy for metastatic non–small cell lung cancer,” Dr. Garon said.

Dr. Gettinger reported serving as a consultant to Bristol-Myers Squibb, which markets nivolumab.

Dr. Garon reported that his institution receives funding from Bristol-Myers Squibb as well as AstraZeneca, Boehringer Ingelheim, Eli Lilly, Genentech, Mirati, Merck, Pfizer, and Novartis.

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– The combination of nivolumab and ipilimumab as first-line therapy in patients with advanced non–small cell lung cancer (NSCLC) doubled median progression-free survival time compared with nivolumab monotherapy in updated results from the CheckMate 012 trial, Scott N. Gettinger, MD, reported at the World Congress on Lung Cancer.

This doubling of progression-free survival (PFS) applied to all comers regardless of whether or not their tumor expressed programmed death-ligand 1 (PD-L1). In those patients with any degree of PD-L1 expression – even if just 1% of tumor cells stained positive – combination therapy didn’t just double median PFS, it tripled it, compared with nivolumab alone, added Dr. Gettinger of the Yale Cancer Center in New Haven, Conn.

Bruce Jancin/Frontline Medical News
Dr. Scott N. Gettinger
“Response rates seemed to go up as PD-L1 expression went up,” he said at the meeting sponsored by the International Association for the Study of Lung Cancer.

CheckMate 012 is a phase I study of nivolumab as first-line therapy for advanced NSCLC with numerous treatment arms. Dr. Gettinger presented updated results for 52 patients who received intravenous nivolumab monotherapy at a dose of 3 mg/kg every 2 weeks, 36 patients on nivolumab plus intravenous ipilimumab at 1 mg/kg every 12 weeks, and 39 who received nivolumab plus ipilimumab every 6 weeks. None of the participants had prior chemotherapy for their advanced stage IIIb or IV NSCLC.

Median PFS in the overall study population was 3.6 months with nivolumab monotherapy and 8.0 months with combination therapy. In the roughly 70% of participants who had any degree of tumor PD-L1 expression, median PFS was 3.5 months with monotherapy, compared with 12.7 months in the combined dual therapy arms. And, in the roughly one-quarter of patients whose tumor showed at least 50% PD-L1 expression, median PFS rose to 8.3 months with nivolumab monotherapy and hasn’t yet been reached in patients on combination therapy.

The 1-year overall survival rate in patients on nivolumab monotherapy was 73% in all treated patients, 69% in those with any detectable tumor PD-L1 expression, and 83% in patients with at least 50% PD-L1 expression. In patients on combination therapy, the corresponding figures were higher at 76%, 87%, and 100%.

The clearly enhanced efficacy achieved with the combination of nivolumab plus ipilimumab was accomplished with only a modest increase in toxicity compared with nivolumab alone. At a median follow-up of 22 months in the nivolumab monotherapy group and 16 months for combination therapy, the rate of any treatment-related adverse event leading to study withdrawal was 12% with monotherapy and 18% with combination therapy.

The combination of nivolumab (Opdivo), a PD-L1 immune checkpoint inhibitor, and ipilimumab (Yervoy), a cytotoxic T-lymphocyte–associated protein 4 immune checkpoint inhibitor, is biologically attractive: “The ipilimumab primes the immune system by inducing tumor infiltration of effector T cells while depleting the number of myeloid-derived suppressor cells and suppressive regulatory T cells within the tumor microenvironment,” Dr. Gettinger explained.

Nivolumab is approved for treatment of advanced NSCLC that has progressed despite platinum-based chemotherapy. Of the various toxicities associated with the drug, only dermatologic and GI adverse events occurred more frequently with combination therapy than nivolumab alone.

There were five complete responses in the nivolumab monotherapy group and six with combination therapy. Of note, four of these complete responses occurred in patients without any measurable tumor PD-L1 expression.

Based upon these encouraging results from CheckMate 012, a phase III randomized clinical trial of nivolumab as first-line therapy in patients with advanced NSCLC is underway. In the CheckMate 227 trial, patients with any detectable PD-L1 expression are randomized to nivolumab at 3mg/kg every 2 weeks plus ipilimumab at 1 mg/kg every 6 weeks, nivolumab monotherapy at 240 mg every 2 weeks, or standard platinum-based chemotherapy. Patients with no PD-L1 expression in their tumor are assigned to the nivolumab/ipilimumab combination, or nivolumab at 360 mg every 3 weeks plus chemotherapy, or chemotherapy alone.

Dr. Edward B. Garon
Discussant Edward B. Garon, MD, said that most observers believe the two-drug nivolumab/ipilimumab immunotherapy combination will sail through phase III studies. They think it will become the new standard approach to first-line therapy of advanced NSCLC, pushing aside pembrolizumab (Keytruda), a PD-1 receptor inhibitor that has been approved as first-line therapy in patients with advanced NSCLC, albeit with the restriction that they must have at least 50% tumor PD-L1 expression. But he is less certain of this scenario than are many of his colleagues.

“I think we should be cautious despite the excitement about the combination,” argued Dr. Garon, director of thoracic oncology at the University of California, Los Angeles.

He noted that various iterations of the large CheckMate 012 phase I program have been presented repeatedly at major meetings, and the shifting data have raised concerns in his mind about possible patient selection bias stemming from the study design.

“From my perspective, until we see randomized data that can control for these biases, I will remain hopeful but not yet extremely confident that this combination will be the new frontline therapy for metastatic non–small cell lung cancer,” Dr. Garon said.

Dr. Gettinger reported serving as a consultant to Bristol-Myers Squibb, which markets nivolumab.

Dr. Garon reported that his institution receives funding from Bristol-Myers Squibb as well as AstraZeneca, Boehringer Ingelheim, Eli Lilly, Genentech, Mirati, Merck, Pfizer, and Novartis.

– The combination of nivolumab and ipilimumab as first-line therapy in patients with advanced non–small cell lung cancer (NSCLC) doubled median progression-free survival time compared with nivolumab monotherapy in updated results from the CheckMate 012 trial, Scott N. Gettinger, MD, reported at the World Congress on Lung Cancer.

This doubling of progression-free survival (PFS) applied to all comers regardless of whether or not their tumor expressed programmed death-ligand 1 (PD-L1). In those patients with any degree of PD-L1 expression – even if just 1% of tumor cells stained positive – combination therapy didn’t just double median PFS, it tripled it, compared with nivolumab alone, added Dr. Gettinger of the Yale Cancer Center in New Haven, Conn.

Bruce Jancin/Frontline Medical News
Dr. Scott N. Gettinger
“Response rates seemed to go up as PD-L1 expression went up,” he said at the meeting sponsored by the International Association for the Study of Lung Cancer.

CheckMate 012 is a phase I study of nivolumab as first-line therapy for advanced NSCLC with numerous treatment arms. Dr. Gettinger presented updated results for 52 patients who received intravenous nivolumab monotherapy at a dose of 3 mg/kg every 2 weeks, 36 patients on nivolumab plus intravenous ipilimumab at 1 mg/kg every 12 weeks, and 39 who received nivolumab plus ipilimumab every 6 weeks. None of the participants had prior chemotherapy for their advanced stage IIIb or IV NSCLC.

Median PFS in the overall study population was 3.6 months with nivolumab monotherapy and 8.0 months with combination therapy. In the roughly 70% of participants who had any degree of tumor PD-L1 expression, median PFS was 3.5 months with monotherapy, compared with 12.7 months in the combined dual therapy arms. And, in the roughly one-quarter of patients whose tumor showed at least 50% PD-L1 expression, median PFS rose to 8.3 months with nivolumab monotherapy and hasn’t yet been reached in patients on combination therapy.

The 1-year overall survival rate in patients on nivolumab monotherapy was 73% in all treated patients, 69% in those with any detectable tumor PD-L1 expression, and 83% in patients with at least 50% PD-L1 expression. In patients on combination therapy, the corresponding figures were higher at 76%, 87%, and 100%.

The clearly enhanced efficacy achieved with the combination of nivolumab plus ipilimumab was accomplished with only a modest increase in toxicity compared with nivolumab alone. At a median follow-up of 22 months in the nivolumab monotherapy group and 16 months for combination therapy, the rate of any treatment-related adverse event leading to study withdrawal was 12% with monotherapy and 18% with combination therapy.

The combination of nivolumab (Opdivo), a PD-L1 immune checkpoint inhibitor, and ipilimumab (Yervoy), a cytotoxic T-lymphocyte–associated protein 4 immune checkpoint inhibitor, is biologically attractive: “The ipilimumab primes the immune system by inducing tumor infiltration of effector T cells while depleting the number of myeloid-derived suppressor cells and suppressive regulatory T cells within the tumor microenvironment,” Dr. Gettinger explained.

Nivolumab is approved for treatment of advanced NSCLC that has progressed despite platinum-based chemotherapy. Of the various toxicities associated with the drug, only dermatologic and GI adverse events occurred more frequently with combination therapy than nivolumab alone.

There were five complete responses in the nivolumab monotherapy group and six with combination therapy. Of note, four of these complete responses occurred in patients without any measurable tumor PD-L1 expression.

Based upon these encouraging results from CheckMate 012, a phase III randomized clinical trial of nivolumab as first-line therapy in patients with advanced NSCLC is underway. In the CheckMate 227 trial, patients with any detectable PD-L1 expression are randomized to nivolumab at 3mg/kg every 2 weeks plus ipilimumab at 1 mg/kg every 6 weeks, nivolumab monotherapy at 240 mg every 2 weeks, or standard platinum-based chemotherapy. Patients with no PD-L1 expression in their tumor are assigned to the nivolumab/ipilimumab combination, or nivolumab at 360 mg every 3 weeks plus chemotherapy, or chemotherapy alone.

Dr. Edward B. Garon
Discussant Edward B. Garon, MD, said that most observers believe the two-drug nivolumab/ipilimumab immunotherapy combination will sail through phase III studies. They think it will become the new standard approach to first-line therapy of advanced NSCLC, pushing aside pembrolizumab (Keytruda), a PD-1 receptor inhibitor that has been approved as first-line therapy in patients with advanced NSCLC, albeit with the restriction that they must have at least 50% tumor PD-L1 expression. But he is less certain of this scenario than are many of his colleagues.

“I think we should be cautious despite the excitement about the combination,” argued Dr. Garon, director of thoracic oncology at the University of California, Los Angeles.

He noted that various iterations of the large CheckMate 012 phase I program have been presented repeatedly at major meetings, and the shifting data have raised concerns in his mind about possible patient selection bias stemming from the study design.

“From my perspective, until we see randomized data that can control for these biases, I will remain hopeful but not yet extremely confident that this combination will be the new frontline therapy for metastatic non–small cell lung cancer,” Dr. Garon said.

Dr. Gettinger reported serving as a consultant to Bristol-Myers Squibb, which markets nivolumab.

Dr. Garon reported that his institution receives funding from Bristol-Myers Squibb as well as AstraZeneca, Boehringer Ingelheim, Eli Lilly, Genentech, Mirati, Merck, Pfizer, and Novartis.

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Key clinical point: A combination of two immunotherapy agents with different mechanisms of action produced impressive efficacy and acceptable toxicities as first-line therapy in patients with chemotherapy-naive advanced non–small cell lung cancer.

Major finding: The combination of nivolumab and ipilimumab achieved threefold greater progression-free survival than nivolumab alone as first-line therapy for advanced NSCLC in patients with any detectable tumor PD-L1 expression.

Data source: This analysis from a larger phase I study included 127 patients with no prior chemotherapy for advanced NSCLC.

Disclosures: The study presenter is a consultant to Bristol-Myers Squibb, which sponsored the CheckMate 012 trial.

VIDEO: Decision aids can relay relative risks to lung cancer patients

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– Many lung cancer patients would like to work with their physicians to reach a shared decision about their care, but often feel inadequately informed to comfortably participate in the decision process.

Patient decision aids offer a way to address this knowledge and participation gap, Laurie E. Gaspar, MD, said in a video interview at the World Conference on Lung Cancer, sponsored by the International Association for the Study of Lung Cancer.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel

She and her associates have run an online survey that so far has received responses from 196 lung cancer patients, caregivers of patients, or significant others of patients. One hundred seventeen (60%) said that they faced a difficult management decision, but more than half these patients said they felt they had inadequate information to make their decision. The most popular form of decision making was a shared decision with their physician, favored by 73% of the respondents, but only about half the patients believed they had actually participated in a shared-decision process with their physician, reported Dr. Gaspar, professor of radiation oncology at the University of Colorado in Aurora.

“A majority of the patients felt there was a problem in not having sufficient information, and a majority want to make decisions in a shared way,” she explained.

Mitchel L. Zoler/Frontline Medical News
Dr. Laurie E. Gaspar
Dr. Gaspar hopes to receive funding to develop new decision aids that can help patients better understand the benefits and risk of various management options. She believes that visual representation of the incidence rates of risks and benefits can help patients better comprehend concepts such as the relative risks that various options pose. “We’re not always successful in presenting information is a way that’s easy for patients to understand. Shared decision aids may help lung cancer patients make better treatment choices,” she said.
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– Many lung cancer patients would like to work with their physicians to reach a shared decision about their care, but often feel inadequately informed to comfortably participate in the decision process.

Patient decision aids offer a way to address this knowledge and participation gap, Laurie E. Gaspar, MD, said in a video interview at the World Conference on Lung Cancer, sponsored by the International Association for the Study of Lung Cancer.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel

She and her associates have run an online survey that so far has received responses from 196 lung cancer patients, caregivers of patients, or significant others of patients. One hundred seventeen (60%) said that they faced a difficult management decision, but more than half these patients said they felt they had inadequate information to make their decision. The most popular form of decision making was a shared decision with their physician, favored by 73% of the respondents, but only about half the patients believed they had actually participated in a shared-decision process with their physician, reported Dr. Gaspar, professor of radiation oncology at the University of Colorado in Aurora.

“A majority of the patients felt there was a problem in not having sufficient information, and a majority want to make decisions in a shared way,” she explained.

Mitchel L. Zoler/Frontline Medical News
Dr. Laurie E. Gaspar
Dr. Gaspar hopes to receive funding to develop new decision aids that can help patients better understand the benefits and risk of various management options. She believes that visual representation of the incidence rates of risks and benefits can help patients better comprehend concepts such as the relative risks that various options pose. “We’re not always successful in presenting information is a way that’s easy for patients to understand. Shared decision aids may help lung cancer patients make better treatment choices,” she said.

– Many lung cancer patients would like to work with their physicians to reach a shared decision about their care, but often feel inadequately informed to comfortably participate in the decision process.

Patient decision aids offer a way to address this knowledge and participation gap, Laurie E. Gaspar, MD, said in a video interview at the World Conference on Lung Cancer, sponsored by the International Association for the Study of Lung Cancer.

The video associated with this article is no longer available on this site. Please view all of our videos on the MDedge YouTube channel

She and her associates have run an online survey that so far has received responses from 196 lung cancer patients, caregivers of patients, or significant others of patients. One hundred seventeen (60%) said that they faced a difficult management decision, but more than half these patients said they felt they had inadequate information to make their decision. The most popular form of decision making was a shared decision with their physician, favored by 73% of the respondents, but only about half the patients believed they had actually participated in a shared-decision process with their physician, reported Dr. Gaspar, professor of radiation oncology at the University of Colorado in Aurora.

“A majority of the patients felt there was a problem in not having sufficient information, and a majority want to make decisions in a shared way,” she explained.

Mitchel L. Zoler/Frontline Medical News
Dr. Laurie E. Gaspar
Dr. Gaspar hopes to receive funding to develop new decision aids that can help patients better understand the benefits and risk of various management options. She believes that visual representation of the incidence rates of risks and benefits can help patients better comprehend concepts such as the relative risks that various options pose. “We’re not always successful in presenting information is a way that’s easy for patients to understand. Shared decision aids may help lung cancer patients make better treatment choices,” she said.
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Key clinical point: Lung cancer patients would like to be better informed about their management options and play a role in their care decision making.

Major finding: A shared-decision process received support from 73% of patients, but just half believed they participated in shared decision making.

Data source: Online survey completed by 196 lung cancer patients, caregivers or significant others.

Disclosures: Dr. Gaspar had no disclosures.

Centers of excellence program raises quality bar in lung cancer management

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– A grassroots, patient-centric program aimed at encouraging U.S. community hospitals in underserved areas to adopt a comprehensive centers-of-excellence model for treatment of lung cancer has demonstrated that community cancer centers can achieve quality of care comparable to that found in academic medical centers, Raymond Osarogiagbon, MD, declared at the World Congress on Lung Cancer.

One major reason why aggregate lung cancer survival in the United States has barely inched upward during the past 3 decades is there is often a huge gap between the quality of care patients get at academic research centers – including access to clinical trials – and what they can get in community hospitals. Eighty percent of lung cancer patients receive their care in these community cancer centers, where not all physicians and surgeons may be up to speed with guideline-recommended best practices, observed Dr. Osarogiagbon, a medical oncologist and director of the multidisciplinary thoracic oncology program at Baptist Cancer Center in Memphis.

Bruce Jancin/Frontline Medical News
Dr. Raymond Osarogiagbon
“Lung cancer is a devil of a problem right now. The disparities in outcome are worse than in most other cancers. There is a prevailing sense of nihilism about lung cancer in many community cancer centers ranging from nontreatment of some patients who have eminently treatable disease to widely disparate methods of treatment, some of which may not be appropriate. If you’re going to move the needle at the population level and help more people survive lung cancer, it seems you’re going to have to interfere at the level of the places patients choose to go to receive their care,” he explained at the meeting, which was sponsored by the International Association for the Study of Lung Cancer.

The centers of excellence program, supported by the Bonnie J. Addario Lung Cancer Foundation, is an attempt to address this disparity. In 3 years, 13 hospitals in areas with large underserved patient populations in nine states have qualified. Dr. Osarogiagbon anticipates that the competitive advantage this designation provides will spur more and more community hospitals with cancer centers to get on board.

To qualify, community cancer centers have to commit to following specific best practices as standards of care in accord with guidelines issued by groups including the National Comprehensive Cancer Network and the American Society of Clinical Oncology. Requirements include the use of multidisciplinary teams for treatment decisions, routine use of molecular diagnostics and targeted therapies, patient access to clinical trials, longitudinal institutional data tracking, patient and caregiver education programs, and minimally invasive surgical and staging techniques. A lung cancer screening program is required. So is a systematic program for management of all incidentally detected lung nodules, many of which today fall between the cracks.

In an interview, Dr. Osarogiagbon shared several examples of how achieving the foundation’s center of excellence designation enables community cancer centers to achieve top-quality care on a par with academic medical centers. At Memorial Cancer Institute in Hollywood, Fla., which serves large Hispanic and black populations, implementation of a lung cancer screening program and other measures has resulted in 40% of patients with lung cancer being diagnosed with stage 1 or 2 disease amenable to curative surgery. The overall U.S. rate is significantly lower at 29%.

And in an area composed of western Tennessee, northern Mississippi, and eastern Arkansas, Dr. Osarogiagbon and coinvestigators at the Baptist Cancer Center conducted a study demonstrating that the use of two complementary surgical staging interventions resulted in improved rates of guideline-recommended surgical staging quality.

The observational study, presented elsewhere at the world congress by Nicholas Faris, MD, of the Thoracic Oncology Research Group, Baptist Cancer Center, Memphis, entailed analysis of curative-intent resections in 2,094 patients with non–small-cell lung cancer during 2004-2016. A novel anatomically sound gross dissection protocol was provided to assist pathologists in retrieving the intrapulmonary lymph nodes required for staging in 161 patients undergoing curative resection. A special lymph node specimen collection kit was utilized in 152. Another 289 resections utilized both interventions. And 1,492 patients received neither intervention.

Use of the interventions was associated with higher rates of adherence to various professional organizations’ guidelines for high-quality surgical staging. For example, the American College of Surgeons Commission on Cancer recommends that at least 10 lymph nodes be examined in patients with stage 1a-2b NSCLC. This was achieved in 71% of patients who had both interventions, 56% of those where the lymph node specimen collection kit was utilized but not the pathology intervention, 48% of patients where the pathology intervention but not the kit was employed, and in only 25% of patients where neither was used.

Similarly, more than three mediastinal lymph node stations were sampled in accord with National Comprehensive Cancer Network guidelines in 96% of patients with both interventions, 90% with the lymph node collection kit, 54% with the pathology intervention, and only 44% with neither, Dr. Osarogiagbon said in the interview.

Dr. Osarogiagbon reported serving as a consultant to Eli Lilly, Genentech, and the Association of Community Cancer Centers.

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– A grassroots, patient-centric program aimed at encouraging U.S. community hospitals in underserved areas to adopt a comprehensive centers-of-excellence model for treatment of lung cancer has demonstrated that community cancer centers can achieve quality of care comparable to that found in academic medical centers, Raymond Osarogiagbon, MD, declared at the World Congress on Lung Cancer.

One major reason why aggregate lung cancer survival in the United States has barely inched upward during the past 3 decades is there is often a huge gap between the quality of care patients get at academic research centers – including access to clinical trials – and what they can get in community hospitals. Eighty percent of lung cancer patients receive their care in these community cancer centers, where not all physicians and surgeons may be up to speed with guideline-recommended best practices, observed Dr. Osarogiagbon, a medical oncologist and director of the multidisciplinary thoracic oncology program at Baptist Cancer Center in Memphis.

Bruce Jancin/Frontline Medical News
Dr. Raymond Osarogiagbon
“Lung cancer is a devil of a problem right now. The disparities in outcome are worse than in most other cancers. There is a prevailing sense of nihilism about lung cancer in many community cancer centers ranging from nontreatment of some patients who have eminently treatable disease to widely disparate methods of treatment, some of which may not be appropriate. If you’re going to move the needle at the population level and help more people survive lung cancer, it seems you’re going to have to interfere at the level of the places patients choose to go to receive their care,” he explained at the meeting, which was sponsored by the International Association for the Study of Lung Cancer.

The centers of excellence program, supported by the Bonnie J. Addario Lung Cancer Foundation, is an attempt to address this disparity. In 3 years, 13 hospitals in areas with large underserved patient populations in nine states have qualified. Dr. Osarogiagbon anticipates that the competitive advantage this designation provides will spur more and more community hospitals with cancer centers to get on board.

To qualify, community cancer centers have to commit to following specific best practices as standards of care in accord with guidelines issued by groups including the National Comprehensive Cancer Network and the American Society of Clinical Oncology. Requirements include the use of multidisciplinary teams for treatment decisions, routine use of molecular diagnostics and targeted therapies, patient access to clinical trials, longitudinal institutional data tracking, patient and caregiver education programs, and minimally invasive surgical and staging techniques. A lung cancer screening program is required. So is a systematic program for management of all incidentally detected lung nodules, many of which today fall between the cracks.

In an interview, Dr. Osarogiagbon shared several examples of how achieving the foundation’s center of excellence designation enables community cancer centers to achieve top-quality care on a par with academic medical centers. At Memorial Cancer Institute in Hollywood, Fla., which serves large Hispanic and black populations, implementation of a lung cancer screening program and other measures has resulted in 40% of patients with lung cancer being diagnosed with stage 1 or 2 disease amenable to curative surgery. The overall U.S. rate is significantly lower at 29%.

And in an area composed of western Tennessee, northern Mississippi, and eastern Arkansas, Dr. Osarogiagbon and coinvestigators at the Baptist Cancer Center conducted a study demonstrating that the use of two complementary surgical staging interventions resulted in improved rates of guideline-recommended surgical staging quality.

The observational study, presented elsewhere at the world congress by Nicholas Faris, MD, of the Thoracic Oncology Research Group, Baptist Cancer Center, Memphis, entailed analysis of curative-intent resections in 2,094 patients with non–small-cell lung cancer during 2004-2016. A novel anatomically sound gross dissection protocol was provided to assist pathologists in retrieving the intrapulmonary lymph nodes required for staging in 161 patients undergoing curative resection. A special lymph node specimen collection kit was utilized in 152. Another 289 resections utilized both interventions. And 1,492 patients received neither intervention.

Use of the interventions was associated with higher rates of adherence to various professional organizations’ guidelines for high-quality surgical staging. For example, the American College of Surgeons Commission on Cancer recommends that at least 10 lymph nodes be examined in patients with stage 1a-2b NSCLC. This was achieved in 71% of patients who had both interventions, 56% of those where the lymph node specimen collection kit was utilized but not the pathology intervention, 48% of patients where the pathology intervention but not the kit was employed, and in only 25% of patients where neither was used.

Similarly, more than three mediastinal lymph node stations were sampled in accord with National Comprehensive Cancer Network guidelines in 96% of patients with both interventions, 90% with the lymph node collection kit, 54% with the pathology intervention, and only 44% with neither, Dr. Osarogiagbon said in the interview.

Dr. Osarogiagbon reported serving as a consultant to Eli Lilly, Genentech, and the Association of Community Cancer Centers.

– A grassroots, patient-centric program aimed at encouraging U.S. community hospitals in underserved areas to adopt a comprehensive centers-of-excellence model for treatment of lung cancer has demonstrated that community cancer centers can achieve quality of care comparable to that found in academic medical centers, Raymond Osarogiagbon, MD, declared at the World Congress on Lung Cancer.

One major reason why aggregate lung cancer survival in the United States has barely inched upward during the past 3 decades is there is often a huge gap between the quality of care patients get at academic research centers – including access to clinical trials – and what they can get in community hospitals. Eighty percent of lung cancer patients receive their care in these community cancer centers, where not all physicians and surgeons may be up to speed with guideline-recommended best practices, observed Dr. Osarogiagbon, a medical oncologist and director of the multidisciplinary thoracic oncology program at Baptist Cancer Center in Memphis.

Bruce Jancin/Frontline Medical News
Dr. Raymond Osarogiagbon
“Lung cancer is a devil of a problem right now. The disparities in outcome are worse than in most other cancers. There is a prevailing sense of nihilism about lung cancer in many community cancer centers ranging from nontreatment of some patients who have eminently treatable disease to widely disparate methods of treatment, some of which may not be appropriate. If you’re going to move the needle at the population level and help more people survive lung cancer, it seems you’re going to have to interfere at the level of the places patients choose to go to receive their care,” he explained at the meeting, which was sponsored by the International Association for the Study of Lung Cancer.

The centers of excellence program, supported by the Bonnie J. Addario Lung Cancer Foundation, is an attempt to address this disparity. In 3 years, 13 hospitals in areas with large underserved patient populations in nine states have qualified. Dr. Osarogiagbon anticipates that the competitive advantage this designation provides will spur more and more community hospitals with cancer centers to get on board.

To qualify, community cancer centers have to commit to following specific best practices as standards of care in accord with guidelines issued by groups including the National Comprehensive Cancer Network and the American Society of Clinical Oncology. Requirements include the use of multidisciplinary teams for treatment decisions, routine use of molecular diagnostics and targeted therapies, patient access to clinical trials, longitudinal institutional data tracking, patient and caregiver education programs, and minimally invasive surgical and staging techniques. A lung cancer screening program is required. So is a systematic program for management of all incidentally detected lung nodules, many of which today fall between the cracks.

In an interview, Dr. Osarogiagbon shared several examples of how achieving the foundation’s center of excellence designation enables community cancer centers to achieve top-quality care on a par with academic medical centers. At Memorial Cancer Institute in Hollywood, Fla., which serves large Hispanic and black populations, implementation of a lung cancer screening program and other measures has resulted in 40% of patients with lung cancer being diagnosed with stage 1 or 2 disease amenable to curative surgery. The overall U.S. rate is significantly lower at 29%.

And in an area composed of western Tennessee, northern Mississippi, and eastern Arkansas, Dr. Osarogiagbon and coinvestigators at the Baptist Cancer Center conducted a study demonstrating that the use of two complementary surgical staging interventions resulted in improved rates of guideline-recommended surgical staging quality.

The observational study, presented elsewhere at the world congress by Nicholas Faris, MD, of the Thoracic Oncology Research Group, Baptist Cancer Center, Memphis, entailed analysis of curative-intent resections in 2,094 patients with non–small-cell lung cancer during 2004-2016. A novel anatomically sound gross dissection protocol was provided to assist pathologists in retrieving the intrapulmonary lymph nodes required for staging in 161 patients undergoing curative resection. A special lymph node specimen collection kit was utilized in 152. Another 289 resections utilized both interventions. And 1,492 patients received neither intervention.

Use of the interventions was associated with higher rates of adherence to various professional organizations’ guidelines for high-quality surgical staging. For example, the American College of Surgeons Commission on Cancer recommends that at least 10 lymph nodes be examined in patients with stage 1a-2b NSCLC. This was achieved in 71% of patients who had both interventions, 56% of those where the lymph node specimen collection kit was utilized but not the pathology intervention, 48% of patients where the pathology intervention but not the kit was employed, and in only 25% of patients where neither was used.

Similarly, more than three mediastinal lymph node stations were sampled in accord with National Comprehensive Cancer Network guidelines in 96% of patients with both interventions, 90% with the lymph node collection kit, 54% with the pathology intervention, and only 44% with neither, Dr. Osarogiagbon said in the interview.

Dr. Osarogiagbon reported serving as a consultant to Eli Lilly, Genentech, and the Association of Community Cancer Centers.

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