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BMJ:PD-L1在癌症中的表达状态与PD-1或PD-L1抑制剂的疗效

2018-09-10 xing.T MedSci原创

由此可见,对于PD-L1阳性和PD-L1阴性的患者,PD-1或PD-L1阻断疗法优于常规疗法。该研究结果表明单独的PD-L1表达状态不足以确定应向哪些患者提供PD-1或PD-L1阻断治疗。

近日,顶级杂志BMJ上发表了一篇研究文章,研究人员旨在评估程序性细胞死亡1(PD-1)或程序性细胞死亡配体1(PD-L1)抑制剂与常规药物在PD-L1阳性和PD-L1阴性癌症患者中的相对功效。

研究人员对随机对照试验进行了一项Meta分析。数据来源于PubMed、Embase、Cochrane数据库和美国临床肿瘤学会和欧洲肿瘤内科学会上发表的会议摘要,时间截止至2018年3月。研究人员纳入了基于PD-1阳性或PD-L1阴性的死亡风险比可用的PD-1或PD-L1抑制剂(avelumab、atezolizumab、durvalumab、nivolumab和pembrolizumab)研究。PD-L1阳性或阴性的阈值是通过免疫组织化学染色方法确定的PD-L1染色细胞占肿瘤细胞或肿瘤和免疫细胞总数的1%。

该研究纳入了来自于8项随机对照试验的4174例晚期或转移性癌症患者。与常规药物相比,PD-1或PD-L1抑制剂与PD-L1阳性(n=2254,风险比为0.66,95%置信区间为0.59-0.74)和PD-L1阴性(1920,0.80,0.71-0.90)患者的总生存期显著延长相关。然而,在PD-L1阳性和PD-L1阴性的患者对PD-1或PD-L1阻断治疗的疗效显著不同(相互作用P=0.02)。此外,在PD-L1阳性和PD-L1阴性的患者中,PD-1或PD-L1阻断的长期临床益处在不同介入药物、癌症组织型、随机化分层方法、免疫组化评分系统、药物靶点、对照组类型和中位随访时间中观察到一致的结果。

由此可见,对于PD-L1阳性和PD-L1阴性的患者,PD-1或PD-L1阻断疗法优于常规疗法。该研究结果表明单独的PD-L1表达状态不足以确定应向哪些患者提供PD-1或PD-L1阻断治疗。

原始出处:

Xian Shen, et al. Efficacy of PD-1 or PD-L1 inhibitors and PD-L1 expression status in cancer: meta-analysis.BMJ 2018; https://www.bmj.com/content/362/bmj.k3529

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    2019-01-18 gaoxiaoe
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    2019-01-22 jklm09
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    2018-09-12 smartjoy
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    2018-09-10 内科新手

    谢谢梅斯提供这么好的信息,学到很多

    0

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