JCO:贝伐珠单抗治疗mCRC 18q11.2-q12.1缺失是福还是祸?

2018-08-14 王淳 环球医学

2018年7月,发表于《J Clin Oncol》上的一项研究,考察了染色体18q11.2-q12.1的缺失可预测贝伐珠单抗治疗转移性结直肠癌(Mcrc)患者的生存率。

2018年7月,发表于《J Clin Oncol》上的一项研究,考察了染色体18q11.2-q12.1的缺失可预测贝伐珠单抗治疗转移性直肠癌(Mcrc)患者的生存率。

目的:mCRC患者从贝伐珠单抗联合标准化疗获得的益处是有限的。但是,一个亚组患者可能明显获益,突出表明对贝伐珠单抗应答的生物标志物还未满足临床需求。先前,研究者证实了染色体5q34、17q12和18q11.2-q12.1的缺失与CAIRO2临床试验中贝伐珠单抗治疗的mCRC患者无进展生存期(PFS)明显相关,但在CAIRO试验中未接受贝伐珠单抗的患者中没有这种相关性。本研究旨在验证这些结果。

数据来源和方法:对来自2个接受贝伐珠单抗作为一线治疗患者队列进行了原发性mCRC样品分析;96例样品来自欧洲多中心研究Angiopredict(APD),81例样品来自意大利多中心研究MOMA。第3个队列的90例样品来自未接受贝伐珠单抗的mCRC患者。通过浅层全基因组测序检测了肿瘤活检标本的拷贝数畸变,并且与PFS,总生存期(OS)和应答相关。

结果:染色体18q11.2-q12.1缺失与接受贝伐珠单抗队列中延长的PFS相关(APD:风险比,0.54;P=0.01;PFS差值,65日;MOMA:风险比,0.55;P=0.019;PFS差值,49日)。在这2个队列中发现OS和总应答率存在相似的相关性,当与CAIRO2队列联合后开始变得明显。在未接受贝伐珠单抗mCRC患者队列的中位PFS与没有18q11.2-q12.1缺失的APD,MOMA和CAIRO2患者相似。

结论:染色体18q11.2-q12.1缺失可预示接受贝伐珠单抗患者的PFS延长。这种缺失的预测价值是由OS和总体响应率显着增加所证实的。

原始出处:

van Dijk E, et al. Loss of Chromosome 18q11.2-q12.1 Is Predictive for Survival in Patients With Metastatic Colorectal Cancer Treated With Bevacizumab. J Clin Oncol. 2018 Jul 10;36(20):2052-2060. doi: 10.1200/JCO.2017.77.1782.

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    2019-04-16 lidong40
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    2018-10-17 yxch36
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    2018-08-14 1e1b8538m79(暂无匿称)

    不错的文章值得拥有哦

    0

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    2018-08-14 医者仁心5538

    学习了

    0

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