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Clin Cancer Res:遗憾,依维莫司用于mTOR信号通路变异的泛癌患者的疗效令人失望!

2021-07-22 MedSci原创 MedSci原创

在携带特定突变的泛癌患者中,依维莫司治疗的ORR(7%)令人失望

mTOR是一种丝氨酸-苏氨酸激酶,是下游两个靶点(mTOR复合物1和2)不重叠的多亚基复合物的关键成分。mTORC1通过控制细胞合成代谢和分解代谢过程的平衡,在调节细胞生长和分裂中起着至关重要的作用,并促进细胞周期的进展(G1期→S期)。

这是一项多中心、单组前瞻性II期试验,旨在评估mTORC1口服抑制剂依维莫司在携带TSC1/TSC2或MTOR突变的晚期实体瘤患者中的治疗活性。

招募了携带TSC1/TSC2失活性突变或MTOR激活性突变的晚期实体瘤患者,每天予以10 mg依维莫司治疗,直到病情进展或出现不可耐受的毒性。主要终点是客观缓解率(ORR)。

受试患者的癌种

2015年11月-2018年10月,共招募了30位患者,其中13位携带TSC1突变、15位携带TSC2突变、1位同时携带TSC1和TSC2突变、1位携带MTOR突变。

治疗缓解情况

中位无进展生存期为2.3个月,中位总生存期为7.3个月观察到两位患者获得了部分缓解(7%),其中一位是携带TSC1双等位基因失活性突变和高肿瘤突变负荷的上尿路癌,一位是携带TSC2双等位基因失活性突变和PEComa样致病性特征的尿路癌。最常见的任何级别的治疗相关的不良反应事件是粘膜炎(27%);一位患者发生了致命性的肺炎。

很遗憾,根据该研究结果,在携带特定突变的泛癌患者中,依维莫司治疗的ORR(7%)令人失望。

原始出处:

Elio Adib, Katarzyna Klonowska, et al. Phase II Clinical Trial of Everolimus in a Pan-Cancer Cohort of Patients with mTOR Pathway Alterations. Clinical Cancer Research. July 2021. DOI: 10.1158/1078-0432.CCR-20-4548

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    2021-07-22 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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    2021-07-22 医鸣惊人

    认真学习了

    0

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