This study is a prospective, single center, single arm clinical study. This study plans to include 67 patients with locally advanced gastric adenocarcinoma who can be operated without any treatment as the study object. After signing the informed consent, they are screened to meet the inclusion criteria. After receiving the standard dose of karelizumab combined with XELOX regimen for 4 courses of treatment before surgery, and within 3-4 weeks after the completion of the fourth administration, preoperative imaging examination is used to evaluate the efficacy of new adjuvant treatment and the possibility of radical D2 resection, The patient received radical surgical treatment for gastric cancer, and continued to receive adjuvant treatment of the original scheme after the operation (the first treatment started 6 weeks ± 2 weeks after the operation, and can not exceed 3 months).
To evaluate the efficacy and safety of carelizumab combined with XELOX regimen in neoadjuvant treatment of locally advanced resectable gastric cancer