RecruitingPhase 2Drug trialDisitamab Vedotin Combined With Tislelizumab and Capecitabine in the Perioperative Treatment of Locally Advanced Gastric Cancer With HER2 OverexpressionThe efficacy and safety of combination with Disitamab Vedotin and with Tislelizumab and Capecitabine for perioperative treatment of locally advanced gastric cancer with HER2 overexpression.