Nivolumab, S-1 Combined With Oxaliplatin Versus Nivolumab as Neoadjuvant Therapy in Advanced Gastric Cancer

The trial is a prospective, randomized, controlled phase Ⅱ study which will be conducted in Chinese PLA General Hospital, Beijing, China. Patients with eligibility will enrolled and assigned into either group A for 9 weeks of nivolumab, S-1 combined with oxaliplatin (Nivo+SOX) followed by D2 surgery and group B for 9 weeks of nivolumab followed by D2 surgery. The primary endpoint is the safety assessed by recording adverse events and the secondary endpoints are response rate, disease control rate, pathological complete response rate, D2 rate and R0 rate.