Four-year outcomes from phase III CheckMate-9LA trial show durable, long-term survival with Opdivo + Yervoy with two cycles of chemotherapy for metastatic non-small cell lung cancer

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 less than 1% and squamous histology: i. PD-L1 less than 1%: Among patients with tumor PD-L1 expression les than 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). ii. 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.