About this trial
The purpose of this study is to evaluate the efficacy and safety of perioperative Disitamab Vedotin plus Toripalimab and XELOX versus Disitamab Vedotin plus Toripalimab versus XELOX in subjects with HER2-expressing resectable locally advanced gastric or gastroesophageal junction adenocarcinoma.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Voluntarily participate and sign the informed consent form;
Male or female, ≥18 years;
Patients with gastric or gastroesophageal junction adenocarcinoma confirmed by histopathology;
Clinical stage cT3-4aN+, no distant metastasis (M0);
Disqualifiers
Received any anti-tumor therapy for gastric or gastroesophageal junction adenocarcinoma before study dosing, including chemotherapy, radiotherapy, targeted therapy, immunotherapy and other anti-tumor drug therapy (including Chinese medicine treatment with anti-tumor ingredients specified in the instructions within 2 weeks before screening);
The investigators considered perioperative period treatment of patients requiring radiotherapy for target lesions;
Major surgery was performed within 4 weeks before the start of study dosing and did not fully recover;
Patients with active gastrointestinal bleeding or high risk of bleeding within 2 weeks prior to screening;
Trial design
Parallel
Treatments tested in this trial
Capecitabine
Drug1000 mg/m2, Bid orally, D1-14, every 3 weeks
oxaliplatin
Drug130 mg/m2, intravenous infusion, D1, every 3 weeks
Disitamab Vedotin
Drug2.5 mg/kg, intravenous infusion, D1, every 2 weeks
Toripalimab
Drug3.0 mg/kg, intravenous infusion, D1, every 2 weeks
Treatment groups
Trial outcomes
Primary outcomes
Pathological complete response (pCR) rate
Proportion of patients with pCR. pCR is defined as no invasive disease within an entirely submitted and evaluated gross lesion, and histologically negative nodes (ypT0N0)
Secondary outcomes
Objective remission rate (ORR)
The objective response rate will be mainly analyzed by according to the RECIST 1.1 standard tumor evaluation by the investigator will be performed).
R0 resection rate
Percentage of patients with complete resection of tumor tissue without tumor cell infiltration at surgical margins
Tumor regression grade (TRG) score
to evaluate tumor regression grade (based on postoperative pathological reports);
Major pathological response (MPR)
the proportion of patients with percentage of residual tumor cells in the tumor bed ≤10% after neoadjuvant therapy;
Sponsors and contacts
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