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PRINCETON, N.J.--(BUSINESS WIRE)-- Bristol Myers Squibb (NYSE: BMY) today announced four-year follow-up results from the Phase 3 CheckMate -9LA trial demonstrating durable, long-term survival benefits with Opdivo (nivolumab) plus Yervoy (ipilimumab) with two cycles of chemotherapy compared to four cycles of chemotherapy alone in previously untreated patients with metastatic non-small cell lung cancer (NSCLC). With a minimum follow-up of 47.9 months, the dual immunotherapy-based combination continued to enhance overall survival (OS), the trial’s primary endpoint, with 21% of patients treated with Opdivo plus Yervoy with two cycles of chemotherapy alive compared to 16% of patients treated with chemotherapy alone at four years (Hazard Ratio [HR] 0.74; 95% Confidence Interval [CI]: 0.63 to 0.87).

With extended follow-up, the clinically meaningful efficacy benefit of Opdivo plus Yervoy with two cycles of chemotherapy was maintained across secondary endpoints and key subgroups of patients, with benefits more pronounced amongst high unmet need patients with tumor PD-L1 expression <1% and squamous histology:

• PD-L1 <1%: Among patients with tumor PD-L1 expression <1%, the OS rate was 23% for those treated with the dual immunotherapy-based combination vs. 13% for chemotherapy alone, representing a 34% reduction in the risk of death (HR 0.66; 95% CI: 0.50 to 0.86).
• Squamous histology: Among those with squamous histology, twice the number of patients treated with Opdivo plus Yervoy with chemotherapy were alive at four years compared to those who received chemotherapy alone (20% vs. 10%, respectively). In this group, the dual immunotherapy combination reduced the risk of death by 36% compared to chemotherapy alone (HR 0.64; 95% CI: 0.48 to 0.84).

No new safety signals were observed with Opdivo plus Yervoy with two cycles of chemotherapy with extended follow-up in the CheckMate -9LA trial. These data will be featured in a late-breaking poster presentation (Abstract #LBA9023) at the 2023 American Society of Clinical Oncology (ASCO) Annual Meeting on June 4, 2023, from 5:30 - 7:00 p.m. EDT.

“The durable results seen with nivolumab plus ipilimumab with chemotherapy over four years, especially in patients typically facing a poor prognosis, demonstrate the sustained benefits of combining dual immunotherapy with limited chemotherapy for patients with advanced or metastatic non-small cell lung cancer, which remains an incredibly challenging disease to treat,” said David P. Carbone, M.D., Ph.D., CheckMate -9LA investigator and Director of the Thoracic Oncology Center at The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute. “The data in patients with tumor PD-L1 expression <1% and squamous histology are particularly encouraging, as they show that the combination therapy continues to reduce the risk of death by approximately one-third compared to chemotherapy alone four years following treatment in patient groups historically facing the worst outcomes.”

“Cancer treatment is never a one-size-fits-all approach given that patients with thoracic cancers like non-small cell lung cancer have diverse sets of needs. We are committed to researching solutions that work for more patients and can potentially help improve outcomes and fill areas of high unmet need,” said Abderrahim Oukessou, M.D., vice president, thoracic cancers development lead, Bristol Myers Squibb. “Our data in lung cancer at ASCO 2023 add to the growing body of evidence supporting the potential of our medicines to improve long-term outcomes for patients in both advanced settings and earlier stages of disease, as well as difficult-to-treat patient groups requiring personalized approaches to treatment. The CheckMate -9LA results, which demonstrate sustained efficacy benefits over four years with an Opdivo-based combination, further reinforce our promise to deliver durable options to more patients across varying stages and types of cancer.”

Opdivo plus Yervoy-based combinations have shown significant improvements in OS in six Phase 3 clinical trials in five tumors to date: metastatic NSCLC, metastatic melanoma, advanced renal cell carcinoma, malignant pleural mesothelioma and esophageal squamous cell carcinoma.

About CheckMate -9LA

CheckMate -9LA is an open-label, global multi-center, randomized Phase 3 trial evaluating Opdivo (360 mg Q3W) plus Yervoy (1 mg/kg Q6W) combined with chemotherapy (two cycles) compared to chemotherapy alone (up to four cycles followed by optional pemetrexed maintenance therapy if eligible) as a first-line treatment in patients with metastatic non-small cell lung cancer (NSCLC) regardless of PD-L1 expression and histology. Patients in the experimental arm (n=361) were treated with immunotherapy for up to two years or until disease progression or unacceptable toxicity. Patients in the control arm (n=358) were treated with up to four cycles of chemotherapy and optional pemetrexed maintenance (if eligible) until disease progression or unacceptable toxicity. The primary endpoint of the trial was overall survival (OS) in the intent-to-treat (ITT) population. Secondary hierarchical endpoints included progression-free survival (PFS) and overall response rate (ORR), and the study also evaluated efficacy measures according to biomarkers.

About Lung Cancer

Lung cancer is the leading cause of cancer deaths globally. The two main types of lung cancer are non-small cell and small cell. Non-small cell lung cancer (NSCLC) is one of the most common types of lung cancer, representing up to 84% of diagnoses. Survival rates vary depending on the stage and type of the cancer when diagnosed.