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1文献来源Hong DS,Fakih MG,Strickler JH,et al.KRAS G12C Inhibition with sotorasib in advanced solid tumors[J].N Engl J Med,2020,383(13):1207-1217.2证据水平2b。3背景KRAS是人类癌症中最常见的突变致癌基因,KRAS G12C突变发生于13%的非小细胞肺癌(non⁃small cell lung cancer,NSCLC)和1%~3%的结直肠癌(colorectal c