1文献来源
Chalabi M,Fanchi L F,Dijkstra K K,et al.Neoadjuvant immunotherapy leads to pathological responses in MMR-proficient and MMR-deficient early-stage colon cancers[J].Nat Med,2020,26(4):566-576.
2证据水平
1b.
3背景
?程序性死亡受体-1(programmed cell death 1,PD-1)和细胞毒性T淋巴细胞相关抗原4(cytotoxic T lymphocyte-associated antigen-4,CTLA-4)抑制剂的治疗方案对错配修复功能缺陷(mismatch repair-deficient,dMMR)的晚期结直肠癌非常有效,但在错配修复功能完整(proficient mismatch repair,pMMR)的晚期结直肠癌患者中疗效不佳.