默沙东PD-1免疫疗法Keytruda一线治疗晚期非小细胞肺癌(NSCLC)显著延长总生存期和无进展生存期

2016-06-21 佚名 生物谷

美国制药巨头默沙东(Merck & Co)近日公布了PD-1免疫疗法Keytruda(pembrolizumab)一项关键III期临床研究(KEYNOTE-024)的积极数据。该研究在肿瘤表达高水平PD-L1蛋白(肿瘤比例得分TPS≥50%)的既往未接受治疗(初治)晚期非小细胞肺癌(NSCLC)患者中开展。 KEYNOTE-024是一项随机、关键性III期临床研究,在晚期非小细胞肺癌(N

美国制药巨头默沙东(Merck & Co)近日公布了PD-1免疫疗法Keytruda(pembrolizumab)一项关键III期临床研究(KEYNOTE-024)的积极数据。该研究在肿瘤表达高水平PD-L1蛋白(肿瘤比例得分TPS≥50%)的既往未接受治疗(初治)晚期非小细胞肺癌(NSCLC)患者中开展。

KEYNOTE-024是一项随机、关键性III期临床研究,在晚期非小细胞肺癌(NSCLC)患者中开展,评估了Keytruda(pembrolizumab)作为一种单药疗法相对于含铂化疗标准护理(SOC)的疗效和安全性。纳入该研究的患者之前未接受过系统化疗以控制其晚期病情,并且其肿瘤表达高水平的PD-L1蛋白(定义为肿瘤比例得分TPS≥50%,由中心实验室采用一种免疫组化检测确定)。研究中,305例患者随机分配接受Keytruda(200mg/每3周)或含铂SOC化疗(紫杉醇+卡铂,培美曲塞+卡铂,培美曲塞+顺铂,吉西他滨+卡铂,吉西他滨+顺铂),非鳞状组织学肺癌患者允许接受培美曲塞维持治疗。此外,随机分配至对照组的患者在疾病进展时可选择转向Keytruda治疗。该研究的主要终点是无进展生存期(PFS),次要终点包括总生存期(OS)和总缓解率(ORR)。

数据显示,与化疗相比,Keytruda在主要终点(无进展生存期,PFS)和次要终点(总生存期,OS)均表现出优越性。根据这些结果,一个独立的数据监测委员会(DMC)已建议提前终止研究,该研究中接受化疗的患者将有机会转向Keytruda治疗。

该研究中,Keytruda的安全性与以往在晚期非小细胞肺癌群体中开展的其他临床研究一致。KEYNOTE-024的详细数据将在未来召开的医学会议上公布。默沙东表示,KEYNOTE-024研究的结果非常激动人心,Keytruda有望转变一线非小细胞肺癌的临床治疗模式。

之前,Keytruda已于2015年10月获FDA加速批准,用于经FDA批准的一款伴随诊断试剂盒证实为PD-L1表达阳性且接受含铂化疗治疗期间或治疗后病情进展的转移性非小细胞肺癌(NSCLC)的治疗,该批准是基于肿瘤缓解率和缓解持续时间。

当前,在非小细胞肺癌(NSCLC)方面,默沙东正在开展5个注册临床研究,调查Keytruda作为单药及与其他药物的组合疗法。

PD-1/PD-L1免疫疗法是当前备受瞩目的新一类抗癌免疫疗法,旨在利用人体自身的免疫系统抵御癌症,通过阻断PD-1/PD-L1信号通路使癌细胞死亡,具有治疗多种类型肿瘤的潜力。该领域的佼佼者包括百时美施贵宝、默沙东、罗氏、阿斯利康。目前,各大巨头正在火速推进各自的临床项目,调查单药疗法和组合疗法用于多种癌症的治疗,以彻底发掘该类药物的最大临床潜力。

原始出处:

Merck’s KEYTRUDA? (pembrolizumab) Demonstrates Superior Progression-Free and Overall Survival Compared to Chemotherapy as First-Line Treatment in Patients with Advanced Non-Small Cell Lung Cancer

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    2016-06-23 yese
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