此外,CTC的分子特征可提供有关肿瘤生物学和靶向治疗耐药机制的相关信息[1],例如,通过CTC的基因表达分析,研究人员可以识别出与肿瘤进展和药物治疗反应相关的特定基因变异,这对于优化NSCLC的靶向治疗策略、预测治疗应答以及监测疾病进展具有重要意义。本文基于2024年欧洲肿瘤内科学会(ESMO)年会上发表的一项研究(摘要号:1268P)[5],浅析CTC在NSCLC诊治中发挥的作用,并展望其未来可能的应用方向。
MET阳性循环肿瘤细胞与疾病进展之间的一致性
研究方法:
研究结果:
共235名表皮生长因子受体(EGFR)突变的NSCLC患者入组该研究,其中212例(90.2%)接受了EGFR酪氨酸激酶抑制剂(EGFR-TKl)治疗。在标准治疗期间,评估检测到≥8个MET阳性CTC与患者2个月内疾病进展的一致性,结果显示:在总人群中,敏感性为47.4%,特异性为89.4%,阳性预测值(PPV)57.8%,阴性预测值(NPV)84.7%,准确性79.6%;在212例接受EGFR-TK1治疗的患者中,敏感性50.0%,特异性89.3%,PPV 55.0%,NPV 87.2%,准确性81.1%。
研究结论:
在总人群中,PPV中等,特异性较高,接受EGFR-TKI治疗的患者与总人群的结果基本一致。这表明MET阳性CTC具有预测EGFR突变NSCLC疾病进展的潜力,可作为当前影像学方法的补充。
参考文献:
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