J Immunother Cancer:体重指数、给药策略与免疫检查点抑制剂疗效的相关性

2021-06-17 MedSci原创 MedSci原创

BMI<25的癌症患者使用固定剂量的ICI治疗的结果更好,BMI≥25的患者使用基于体重的ICI治疗策略的结果更好!

体重指数(BMI)增加与多种类型癌症对免疫检查点抑制剂(ICI)的反应改善有关。本研究评估了BMI、ICI给药策略和临床预后之间的相关性。

研究人员提取了接受ICI治疗的癌症患者的临床数据,包括年龄、性别、癌症类型、BMI、ICI类型、给药策略(基于体重或固定)、影像学反应、总生存期 (OS) 和无进展生存期(PFS)。采用Kaplan-Meier曲线、Cox回归和Pearson积矩相关系数比较了低BMI和高BMI人群的临床结果。

共招募了297位患者,其中40%的女性,59%的患者超重(BMI≥25)。204位(69%)患者接受固定剂量的ICI治疗,93位(31%)患者接受基于体重的ICI给药方案。

根据BMI分组的PFS和OS

在整个队列中,超重BMI与PFS改善(HR 0.69, p=0.02)和OS改善的趋势相关(HR 0.77, p=0.08)。对于两个终点,超重患者的预后改善局限于接受基于体重的ICI给药方案治疗的患者(基于体重 vs 固定剂量的PFS的HR分别是0.53[p=0.04] vs 0.79[p=0.2],OS的HR分别是0.56[p=0.03] vs 0.89[p=0.54])。

根据BMI和给药方式的PFS和OS

在多变量分析中,BMI与PFS或OS均无明显相关性。但是,BMI≥25和基于体重的治疗的相互作用与OS相关(HR 0.50,p=0.05),并呈现出与PFS相关的趋势(HR 0.53,p=0.09)

放射学反应和BMI与固定ICI剂量之间没有关联 (p=0.97),但与基于体重的ICI (p=0.1)有接近显著的趋势。在亚组分析中,BMI、ICI给药策略和临床预后之间的相关性似乎仅限于男性。

综上,与基于体重的ICI治疗相比,BMI<25的患者使用固定剂量的ICI治疗往往有更好的结果,而BMI≥25的患者使用基于体重的ICI治疗策略的结果往往更好,尽管这些差异没有达到统计学意义。

原始出处:

Ahmed Murtaza,von Itzstein Mitchell S,Sheffield Thomas et al. Association between body mass index, dosing strategy, and efficacy of immune checkpoint inhibitors.[J] .J Immunother Cancer, 2021, 9: https://doi.org/10.1136/jitc-2021-002349

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    2021-11-29 jklm09
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    2021-06-18 JZ Yang

    谢谢

    0

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    2021-06-17 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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