This multi-centre, single-arm, open-label study was conducted to evaluate the efficacy and safety of Envafolimab in metastatic or recurrent gastric adenocarcinoma... key inclusion criteria were previously untreated, HER2-negative, PD-L1 positive….The ORR was 50%, and DCR was 87.5%, based on RECIST v1.1....Envafolimab plus chemotherapy is a promising and tolerable therapeutic regimen for patients with metastatic or recurrent gastric adenocarcinoma.