Optimizing the Strategy for Preoperative Chemotherapy in Locally Advanced Gastric/Gastroesophageal Cancer

Her-2 Positive patients with SOX Oxaliplatin：130 mg/m2, iv, d1 S-1：twice a day depending on BSA po from d1-14, 80mg(BSA \<1.25m2) , 100mg(BSA ≥1.25m2, \<1.5 m2), 120 mg(BSA≥ 1.5m2), Every 3 weeks.

Her-2 positive patients with SOXT Oxaliplatin：130 mg/m2, iv, d1 S-1：twice a day depending on BSA po from d1-14, 80mg(BSA \<1.25m2) , 100mg(BSA ≥1.25m2, \<1.5 m2), 120 mg(BSA≥ 1.5m2), Trastuzumab: 8mg/kg (loading dose), 6mg/kg subsequently ivgtt d1 Every 3 weeks.

Her-2 Positive patients with SOX Oxaliplatin：130 mg/m2, iv, d1 S-1：twice a day depending on BSA po from d1-14, 80mg(BSA \<1.25m2) , 100mg(BSA ≥1.25m2, \<1.5 m2), 120 mg(BSA≥ 1.5m2), Every 3 weeks.

Her-2 Negative patients with DOS Docetaxel： 60 mg/m2, iv, d1 Oxaliplatin：100 mg/m2, iv, d1 S-1：twice a day depending on BSA po from d1-14, 80mg(BSA \<1.25m2) , 100mg(BSA ≥1.25m2, \<1.5 m2), 120 mg(BSA≥ 1.5m2), Every 3 weeks