Fecal Microbiota Transplantation(Changzhou No.2 People's Hospital)

the investigators plan to initiate a prospective, multicenter, randomized, double-blind, placebo-controlled phase II study, recruiting 198 patients with advanced gastric/gastroesophageal junction adenocarcinoma who have not received prior treatment. Randomly divided into two groups, one group is the group of fecal microbiota transplantation(FMT)+SOX+Sintilimab, and the other group is the group of SOX+Sintilimab. Compare the 2-year OS rates of the two groups to verify whether the addition of FMT to first-line treatment can improve the prognosis of gastric cancer patients.

This study plans to reconstruct intestinal microecology through fecal microbiota transplantation (FMT), and combine with standard first-line therapy to enhance the anti-tumor immune effect at the same time, thereby extending the progression-free survival of patients and improving the prognosis of patients.