Disitamab Vedotin Combined With Tislelizumab and Capecitabine in the Perioperative Treatment of Locally Advanced Gastric Cancer With HER2 Overexpression

"Subjects will receive Disitamab Vedotin combined with Tislelizumab and Capecitabine for 3 cycles (Q3W) in the neoadjuvant phase and 5 cycles (Q3W) of treatment in the adjuvant phase.~1. Disitamab Vedotin：2.5 mg/kg，Q3W；~2. Tislelizumab：200 mg，Q3W；~3. Capecitabine：1000 mg /m2, PO, bid d1-14, Q3W."