Phase II study of perioperative camrelizumab and XELOX for locally advanced gastric or gastroesophageal junction adenocarcinoma

作者：Jiaxing He, Bo Zhang, Shuai Zhou, Ying Yang, Zhuo Han, Tao Wu, Qing Qiao, Haicheng Yang, Xianli He, Nan Wang · 发表于：Cancer Science · 年份：2024 · DOI：10.1111/cas.16425 · 被引用次数：5 · 研究领域：Gastric Cancer Management and Outcomes、Esophageal Cancer Research and Treatment、Gastrointestinal Tumor Research and Treatment

Abstract Immune checkpoint inhibitors combined with chemotherapy have shown promising efficacy in treating gastric or gastroesophageal junction (G/GEJ) adenocarcinoma in the neoadjuvant setting. This phase II trial (NCT05715632) aimed to investigate the efficacy and safety of perioperative camrelizumab plus XELOX in patients with locally advanced G/GEJ adenocarcinoma. Treatment‐naive patients with cT3‐4aN1‐3 M0 resectable locally advanced G/GEJ adenocarcinoma were recruited to receive camrelizumab (200 mg, intravenously) on Day 1 combined with XELOX (oxaliplatin at 130 mg/m 2 on Day 1 and capecitabine at 1000 mg/m 2 on Days 1–14) every 3 weeks for four cycles, followed by surgery and adjuvant camrelizumab combined with XELOX every 3 weeks for four cycles. The primary endpoint was the pathological complete response (pCR; ypT0N0) rate. From September 2020 to January 2023, 46 patients were enrolled, and all patients completed neoadjuvant therapy. Among them, 43 underwent D2 resection. In the intention‐to‐treat population, pCR was achieved in nine patients (19.6%, 95% confidence interval [CI]: 9.9%–34.4%), and the major pathological response was achieved in 25 patients (54.3%, 95% CI: 39.2%–68.8%). The objective response rate was 69.6%, of which 12 patients achieved a complete response and 20 patients achieved a partial response. The 1‐year event‐free survival and disease‐free survival rates were both 93.1%. Treatment‐related adverse events (TRAEs) occurred in 42 (91.3%) patients...