Table (IMAGE) European Society for Medical Oncology Caption Results: Baseline characteristics were balanced across tx arms. Minimum follow-up for the primary endpoint was 29.3 mo. For pts with PD-L1 greater then equal to 1%, OS was significantly longer with NIVO + IPI vs chemo (HR 0.79, 97.72% CI: 0.65-0.96; P = 0.007); PFS, objective response rates, and duration of response favored NIVO + IPI vs chemo. OS benefit was also observed in pts with PD-L1 < 1% and all randomized pts (Table). Prespecified analyses showed enhanced efficacy with NIVO + IPI relative to NIVO in PD-L1 greater then equal to 1% and relative to NIVO + chemo in PD-L1 < 1%. Grade 3-4 tx-related adverse event rates in all randomized pts were 33% with NIVO + low-dose IPI, 19% with NIVO, and 36% with chemo. Credit © European Society for Medical Oncology Usage Restrictions To be used with the proper caption or credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.