Concordance between tumor-tissue analysis and cfDNA analysis (n = 85).

*: two out of these four patients presented unmatched mutations in tissue and plasma: they showed KRAS G12V mutations by plasma analysis and were determined either G12D or G13D by tumor tissue analysis.cfDNA: cell-free DNA; WT: wild type; SE: sensitivity; SP: specificity; PPV: positive predictive value; NPV: negative predictive value.Concordance between tumor-tissue analysis and cfDNA analysis (n = 85).*：4例患者中有2例的组织与血浆突变检测结果不匹配：血浆分析检出KRAS G12V突变，而肿瘤组织分析结果为G12D或G13D突变。cfDNA：循环游离DNA（cell-free DNA）；WT：野生型（wild type）；SE：灵敏度（sensitivity）；SP：特异度（specificity）；PPV：阳性预测值（positive predictive value）；NPV：阴性预测值（negative predictive value）。肿瘤组织检测与循环游离DNA检测的一致性分析（n = 85）。