Patients with previously untreated G/GEJ/E adenocarcinoma received D 1600 mg intravenously (IV) every 4 weeks (Q4W) + Z 480 mg IV Q4W + FOLFOX...Intent-to-treat ORR was 59% (95% CI 42 to 74). Clinical outcomes by PD-L1 status are in the Table...Addition of DZ to FOLFOX showed encouraging ORR and early PFS, particularly in pts with PD-L1-high tumors. The regimen is well tolerated.