Tislelizumab Combined With XELOX as Neoadjuvant Therapy for G/GEJ Adenocarcinoma

"Drugs:~1. Tistelizumab 200mg, iv.gtt, D1, Q3W;~2. Chemotherapy (XELOX) : oxaliplatin (130 mg/m2), iv.gtt, D1, Q3W; Capecitabine (1000mg/m2), P.O.B.I.D., D1-D14, Q3W.~Neoadjuvant therapy:~1. Tislelizumab combined with XELOX, Q3W, for 2\~3 cycles;~2. D2 radical gastrectomy after neoadjuvant therapy.~Adjuvant therapy:~1. From 4 to 8 weeks after surgery, the treatment dose was the same as above;~2. Patients who achieved MPR and non-MPR on pathological evaluation were treated with tirelizumab +XELOX 3\~8 cycles;~3. Tumor evaluation performed every 3 cycles;~4. The maximum duration of adjuvant therapy was not more than 8 cycles."