J Immunother Cancer:所有肿瘤患者都可以用相同剂量的派姆单抗治疗吗?

2021-06-08 Nebula MedSci原创

体表面积和血清乳酸脱氢酶水平明显影响派姆单抗在实体肿瘤患者体内的代谢速度

派姆单抗(pembrolizumab)的给药方案完全基于来自 I-III 期试验的药代动力学 (PK) 模型。所有肿瘤患者都可以用相同剂量的派姆单抗治疗吗?

本研究研究旨在确定影响 PK 的因素及其与现实环境中临床结果的关系

招募了接受派姆单抗单药治疗(2 mg/kg Q3W 或 200 mg/m2 Q3W)的晚期癌症患者,予以连续采样以获得低谷浓度,生成 PK 模型,评估协变量效应并通过引导程序进行内部验证。PK 参数与总生存期 (OS) 和免疫相关不良事件 (irAE) 的发生有关。

派姆单抗 PK 模型的标准拟合优度

从122位非小细胞肺癌(NSCLC)、恶性胸膜间皮瘤(MPM)、黑色素瘤和尿路上皮细胞癌(UCC)患者中共采集了588份血清样本,予以分析。中位随访2.2年,生成了一室PK模型:体表面积(BSA)和血清白蛋白对药物清除率有显着影响(CL;协变量估计值分别为 1.46 和 -1.43),血清乳酸脱氢酶 (LDH)明显影响药物的分布容积(Vd; 0.34)。

根据预后因素校正后,对于NSCLC患者和MPM患者,存在显著的反向CL-OS关系(HR分别是1.69[p=0.024]和3.29[p=0.037]),但在黑色素瘤或UCC患者中会发现这样的相关性(p=0.34)。此外,CL和3级及以上的irAE之间也未见明显相关性。

综上所述,派姆单抗药代动力学的高患者间变异性是由 BSA 和血清白蛋白(在 CL 上)和 LDH(在 Vd 上)决定的NSCLC 和 MPM患者表现出强烈的逆向 CL-OS 关系,而在黑色素瘤和 UCC患者中没有观察到这种相关性。该研究结果提示不能对所有的患者使用相同剂量的派姆单抗,需探索个性化的应用剂量

原始出处:

Hurkmans Daan P,Sassen Sebastiaan D T,de Joode Karlijn et al. Prospective real-world study on the pharmacokinetics of pembrolizumab in patients with solid tumors.[J] .J Immunother Cancer, 2021, 9: https://doi.org/10.1136/jitc-2021-002344

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    2022-04-26 doufangyan

    拜读好文

    0

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    2021-06-08 健康达人

    肿瘤免疫是大家关心的话题,K药与其它药对比,值得关注!

    0

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    2021-06-08 一个病人

    6666

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1214444, encodeId=0f6512144441b, content=拜读好文, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20230508/c2573541a6524ff0944d5799c7cc7568/264cbd4dbc3541b89cf280191fc834d7.jpg, createdBy=29e92023744, createdName=doufangyan, createdTime=Tue Apr 26 12:00:09 CST 2022, time=2022-04-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1253473, encodeId=a13912534e323, content=<a href='/topic/show?id=1c4e65265d5' target=_blank style='color:#2F92EE;'>#派姆单抗#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=65265, encryptionId=1c4e65265d5, topicName=派姆单抗)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ce5632, createdName=jianjun66, createdTime=Thu Jun 10 02:12:20 CST 2021, time=2021-06-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1424341, encodeId=a7741424341e4, content=<a href='/topic/show?id=94c182929d0' target=_blank style='color:#2F92EE;'>#肿瘤患者#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=82929, encryptionId=94c182929d0, topicName=肿瘤患者)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=60943920553, createdName=lanyan20020087, createdTime=Thu Jun 10 02:12:20 CST 2021, time=2021-06-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1025965, encodeId=79cb102596560, content=肿瘤免疫是大家关心的话题,K药与其它药对比,值得关注!, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=健康达人, createdTime=Tue Jun 08 14:12:20 CST 2021, time=2021-06-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=971814, encodeId=161e9e1814af, content=6666, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210608/b769142ac04e426689f90c7fc345e961/9983d9215e2b4d90b705c003b30bb7ba.jpg, createdBy=81aa5516535, createdName=一个病人, createdTime=Tue Jun 08 12:55:35 CST 2021, time=2021-06-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=971785, encodeId=f3889e1785bb, content=请问跟免疫分子图谱差异有关吗, beContent=null, objectType=article, channel=null, level=null, likeNumber=76, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eprBvgOthOlFQV7SltUDXwCYpclUibElfHxUthxQrgxl0ibMGPTRicno4PjqNicJPWibECATcbS4QmrLyg/132, createdBy=fc8d1667756, createdName=bruceskai, createdTime=Tue Jun 08 11:21:55 CST 2021, time=2021-06-08, status=1, ipAttribution=)]
    2021-06-08 bruceskai

    请问跟免疫分子图谱差异有关吗

    0

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