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CLIN CANCER RES:通过循环肿瘤DNA早期评估肺癌免疫治疗反应

2018-04-26 MedSci MedSci原创

通常通过连续的影像学检测决定需要继续还是中断免疫检查点抑制治疗。但是,由于肿瘤缩小缓慢或由于炎症反应反而出现增大时,免疫治疗反应评估难度较大。CLIN CANCER RES近期发表了一篇文章,研究监测循环肿瘤DNA(ctDNA)水平改变是否可以早期进行免疫治疗效果评估。

通常通过连续的影像学检测决定需要继续还是中断免疫检查点抑制治疗。但是,由于肿瘤缩小缓慢或由于炎症反应反而出现增大时,免疫治疗反应评估难度较大。CLIN CANCER RES近期发表了一篇文章,研究监测循环肿瘤DNA(ctDNA)水平改变是否可以早期进行免疫治疗效果评估。

作者分析了28例接受免疫检查点抑制治疗的转移性非小细胞肺癌患者ctDNA连续性改变和影像学肿瘤大小改变以及生存结局情况。使用二代测序分析血浆中肿瘤相关体细胞突变的等位基因情况,从而对ctDNA进行定量分析。ctDNA反应定义为与基线相比下降>50%。研究结果表明,ctDNA反应和影像学反应之间存在强烈一致性。ctDNA评估的出现初始反应的中位时间为24.5天,影像学为72.5天。ctDNA有反应的患者患者治疗时间显着长与无反应的患者。ctDNA反应与更好的无进展生存和更好的总生存有关。

文章最后认为,ctDNA水平下降是治疗有效的早期标志且可以预测接受免疫检查点抑制治疗的患者生存期延长。

原始出处:
Sarah B.Goldberg,Azeet Narayan,et al.Early Assessment of Lung Cancer Immunotherapy Response Via Circulating Tumor DNA.April 2018 doi:10.1158/1078-0432.CCR-17-1341

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    2018-05-17 hanmeijinxiu

    学习了.谢谢分享

    0

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    2018-04-27 哈哈869

    学了

    0

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    2018-04-27 kafei

    了解一下谢谢

    0

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    2018-04-26 天地飞扬

    了解一下.谢谢分享!

    0

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