A Clinical Study Evaluating the Efficacy of Systemic Chemotherapy and Immune Checkpoint Inhibitors Combined With Hyperthermic Intraperitoneal Chemotherapy in the Treatment of Gastric Cancer Patients With Peritoneal Metastasis

HIPEC treatment (Oxaliplatin, physiological saline at 43°C for 60 min) was performed after the Laparoscopic exploratory surgery.

Oxaliplatin, 130 mg, i.v. + S-1 (40 mg per dose for BSA \<1.25; 60 mg per dose for BSA 1.25 to 1.5; 60 mg per dose for BSA ≥1.5, twice daily for each treatment cycle d1-14, q3w

Tislelizumab, 200 mg, q3w