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默克的PD-1单抗Keytruda:一线治疗结肠直肠癌优于化学疗法

2020-04-04 MedSci原创 MedSci原创

来自3期KeyNote-177研究的数据证实了与标准化疗相比,Keytruda在已扩散至身体其他部位或不能手术切除的MSI-H或dMMR阳性结直肠癌中作为一线治疗药物的有效性。

自2017年以来,默克公司(MS)的PD-1单抗Keytruda已经被批准用于二线治疗化疗后高度微卫星不稳定性(MSI-H)或错配修复缺陷(dMMR)突变的实体瘤。

来自3期KeyNote-177研究的数据证实了与标准化疗相比,Keytruda在已扩散至身体其他部位或不能手术切除的MSI-H或dMMR阳性结直肠癌中作为一线治疗药物的有效性。

结果显示,Keytruda取得了与mFOLFOX6或FOLFIRI化学疗法相比具有临床意义的改善。

MSI-H和dMMR突变可在多种肿瘤类型中发现,但最常见于结直肠癌、子宫内膜癌和胃肠道癌,约占所有结直肠肿瘤的10-15%。

默克的竞争对手百时美施贵宝正在进行的CheckMate-142 2期临床试验中,研究了将PD-1单抗Opdivo及其CTLA4抑制剂Yervoy(ipilimumab)的组合作为MSI-H/dMMR阳性转移性结肠癌的一线治疗药物的有效性和安全性。

2018年报告的数据显示,该组合的总体缓解率为60%,包括7%的完全缓解。根据Clinicaltrials.gov数据库,该试验将于2022年获得最终结果。

原始出处:

http://www.pmlive.com/pharma_news/mercks_keytruda_beats_chemo_in_first-line_colorectal_cancer_1336057

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