Perioperative systemic and prophylactic intraperitoneal chemotherapy for type 4/large type 3 gastric cancer: DRAGON-10.

Large type 3 and type 4 gastric cancers (GC) have a significantly poor prognosis, primarily due to their high predisposition for peritoneal dissemination. The application of intraperitoneal chemotherapy has emerged as a viable therapeutic strategy for managing GC patients with peritoneal metastasis. This study is planned to enroll 37 resectable large type 3 or type 4 GC patients. These patients are scheduled to undergo a treatment comprising preoperative chemotherapy with paclitaxel, oxaliplatin and S-1, followed by D2 gastrectomy, and concluding with postoperative treatments that include prophylactic intraperitoneal chemotherapy. The study's primary objective is to evaluate the 3-year peritoneal recurrence rate. Secondary objectives are to assess the 3-year disease-free survival, 3-year overall survival and to monitor the adverse events.Clinical trial registration number: ChiCTR2400083253 (https://www.chictr.org.cn).