LBA6_PR Nivolumab (nivo) plus chemotherapy (chemo) versus chemo as first-line (1L) treatment for advanced gastric cancer/gastroesophageal junction cancer (GC/GEJC)/esophageal adenocarcinoma (EAC): First results of the CheckMate 649 study

Abstract

Standard 1L chemo options for advanced or metastatic HER2-negative GC/GEJC result in poor overall survival (OS; median < 1 year). CheckMate 649 is the largest randomized, global phase III study of programmed death (PD)-1 inhibitor-based therapies in 1L GC/GEJC/EAC. We report OS at a pre-specified interim analysis and progression-free survival (PFS) at final analysis from the NIVO + chemo vs chemo arms in patients (pts) whose tumors expressed PD-ligand 1 (L1) combined positive score (CPS) ≥ 5.