JAMA Oncol:免疫检查点抑制剂临床终点的选择研究

2018-02-26 zhangfan MedSci原创

研究认为,在涉及免疫检查点抑制剂的临床研究中,客观响应率不能准确的反映患者生存期,应采取6个月无进展生存率作为评价治疗效果的主要临床终点

免疫检查点抑制剂有着不同于化疗或靶向治疗药物的独特作用机制。近日研究人员开展综述及荟萃研究,考察免疫检查点抑制剂治疗实体瘤的临床研究中以客观响应率(ORR)代替无进展生存期(PFS)以及总生存期(OS)作为临床终点的可行性。

研究对2000-17年间相关临床研究资料进行收集,采用多因素模型考察6个月无进展生存期以及12个月生存率与客观响应率之间的关系。

87个II期以上临床研究纳入本次荟萃风险,其中52项(60%)以客观响应率为临床终点。研究发现免疫检查点抑制剂治疗的累积ORR为24%。在随机比较中,ORR与PFS风险比的r值为0.63 (95% CI,0.35-0.89),与OS风险比的r值为0.57 (95% CI,0.23-0.89),而PFS与OS的r值为0.42(95% CI,0.04-0.81)。在免疫检查点单臂中,ORR与6个月无进展生存、12个月生存以及6个月无进展生存与12个月生存相比的r相关系数分别为0.37 (95% CI,-0.06到0.95), 0.08 (95% CI,-0.17到 0.70)以及0.74 (95% CI, 0.57-0.92)。验证集中,6个月PFS可以较好的预测12个月OS,但ORR不能对6个月PFS以及12个月OS进行准确预测。

研究认为,在涉及免疫检查点抑制剂的临床研究中,客观响应率不能准确的反映患者生存期,应采取6个月无进展生存率作为评价治疗效果的主要临床终点。

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    2018-12-14 jklm09
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    2018-09-26 minlingfeng
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    2018-03-15 Johnson_zhangdr

    临床终点问题给科研工作者带来了指导性建议.

    0

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