Jie-Hai Yu, Le-En Liao, Bin-Yi Xiao, Xuan Zhang, Ai-Wen Wu, Yong Cheng, Jing-Hua Tang, Wu Jiang, Ling-Heng Kong, Kai Han, Wei-Jian Mei, Zhi-Gang Hong, Wan-Jun Yang, Dan-Dan Li, Zhi-Zhong Pan, Yun-Feng Li, Xiao-Shi Zhang, Pei-Rong Ding
BACKGROUND: Neoadjuvant anti-PD-1 therapy has shown encouraging efficacy in patients with deficient DNA mismatch repair (dMMR)/microsatellite instability-high (MSI-H) locally advanced rectal cancer (LARC), which suggests its potential as a curative-intent therapy and a promising treatment option for organ preservation. We aimed to investigate the long-term outcomes of patients with dMMR/MSI-H LARC who experienced clinical complete response (cCR) after anti-PD-1 therapy. METHODS: We retrospectively analyzed patients with dMMR/MSI-H LARC who achieved cCR and received nonoperative management following neoadjuvant anti-PD-1-based treatment from 4 Chinese medical centers...
March 18, 2024: Journal of the National Comprehensive Cancer Network: JNCCN