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.
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