NEJM:EGFR T790M阳性的肺癌患者该如何选择治疗方案呢?

2016-12-06 xing.T MedSci原创

对于T790M阳性的晚期非小细胞肺癌(包括那些有中枢神经系统转移)并且使用一线EGFR-TKI治疗期间疾病任然进展的患者,Osimertinib比铂类药物加上培美曲塞治疗的疗效更加显著。

osimertinib是一种表皮生长因子受体酪氨酸激酶抑制剂(EGFR-TKI),选择性的用于EGFR-TKI敏感和T790M耐药突变的非小细胞肺癌患者。但是相比于以铂类药物为基础加上培美曲塞的治疗方案,osimertinib在此类患者中的疗效仍是未知。近日,顶级医学期刊NEJM上发表了一篇研究文章,旨在评估osimertinib在此类患者中的疗效。


在这项国际间公开分组的3期随机试验中,研究者纳入了419例T790M阳性的晚期非小细胞肺癌患者,这些患者在使用一线EGFR-TKI治疗后疾病仍然发生进展,以2:1的比例接受口服osimertinib (剂量为80 mg,每日一次)或静脉注射培美曲塞(500mg/m2体表面积)加入卡铂(目标曲线下面积为5 [AUC5])或顺铂(75mg/m2体表面积),每3周一次,共计六个周期;允许使用培美曲塞来维持治疗。所有患者在接受一线EGFR-TKI治疗时,病情发生进展。主要终点事件为研究者评估的无进展生存期。

相比于铂类药物加上培美曲塞治疗,用osimertinib治疗的患者中位无进展生存期明显延长(10.1个月 vs. 4.4个月;风险比为0.30;95%可信区间可信区间为0.23-0.41;P<0.001)。并且用osimertinib治疗的患者客观反应率(71%;95%可信区间为65-76%)明显好于铂类药物加上培美曲塞治疗的患者(31%;95%可信区间为24-40%)(客观反应率比值为5.39;95%可信区间为3.47-8.48;P<0.001)。在144例病灶转移到中枢神经系统患者中,相比于铂类药物加上培美曲塞治疗,用osimertinib治疗的患者中位无进展生存期较长(8.5个月 vs. 4.2个月;风险比为0.32;95%可信区间为0.21-0.49)。相比于铂类药物加上培美曲塞治疗的患者(47%),用osimertinib治疗的患者发生3级以上不良事件的患者比例较低(23%)。

由此可见,对于T790M阳性的晚期非小细胞肺癌(包括那些有中枢神经系统转移)并且使用一线EGFR-TKI治疗期间疾病任然进展的患者,Osimertinib比铂类药物加上培美曲塞治疗的疗效更加显著。

原始出处:


Tony S. Mok,et al. Osimertinib or Platinum–Pemetrexed in EGFR T790M–Positive
Lung Cancer
. NEJM, December 6, 2016.

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    2017-01-04 zhlpower
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    2016-12-10 shanhaiwq1983

    谢谢,学习了!

    0

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    2016-12-08 liuyiping
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    2016-12-07 jetleo

    在144例病灶转移到中枢神经系统患者中,相比于铂类药物加上培美曲塞治疗,用osimertinib治疗的患者中位无进展生存期较长

    0

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