吉非替尼联合化疗有望成为EGFR敏感突变晚期NSCLC一线治疗新选择

2019-06-12 佚名 肿瘤资讯

美国临床肿瘤学会(ASCO)成立于1964年,ASCO年会是世界上规模最大,学术水平最高,最具权威的临床肿瘤学会议。2019年ASCO年会于美国东部时间5月31日至6月4日在芝加哥举办,今年会议的主题为“Caring for Every Patient, Learning from Every Patient”。当地时间6月3日,来自印度孟买Tata Memorial Centre的Vanita

美国临床肿瘤学会(ASCO)成立于1964年,ASCO年会是世界上规模最大,学术水平最高,最具权威的临床肿瘤学会议。2019年ASCO年会于美国东部时间5月31日至6月4日在芝加哥举办,今年会议的主题为“Caring for Every Patient, Learning from Every Patient”。当地时间6月3日,来自印度孟买Tata Memorial Centre的Vanita Noronha教授在转移性非小细胞肺癌“Oral Abstract Session”公布最新研究成果——对比吉非替尼单药与吉非替尼联合培美曲塞和卡铂一线治疗EGFR突变阳性晚期非小细胞肺癌NSCLC)的Ⅲ期临床试验结果。

研究背景

吉非替尼是第一代EGFR-TKI,也是EGFR突变阳性晚期NSCLC的一线标准治疗之一,这项来自印度多中心的Ⅲ期临床研究,旨在评估在一线口服吉非替尼基础上联合培美曲塞+卡铂化疗是否可以提高治疗效果。

研究方法

研究纳入未经治疗、具有EGFR敏感突变(19、21或18外显子)、一般状态评分(PS)0~2分的晚期NSCLC患者。根据PS评分、EGFR突变类型进行分层。入组患者按1∶1随机分组,给予吉非替尼(250 mg,qd)(吉非替尼单药治疗组)或吉非替尼(250 mg,qd)+培美曲塞(500 mg/m2 )+卡铂(AUC 5),q21d *4周期后,继续培美曲塞(500 mg/m2,q21d)维持治疗(吉非替尼+化疗治疗组)。每2~3个月进行疗效评估,治疗直至疾病进展或出现不可耐受毒性。主要研究终点为无进展生存期(PFS);次要终点包括总生存期(OS)、不良反应、客观缓解率(ORR)和生活质量(QoL)。生存分析以受试者最初被分配的治疗计划,而非最终所获得的治疗为基础进行分析(即:意向性治疗分析,ITT)。

研究结果

患者基线特征

2016年8月至2018年8月,350例患者随机分配接受吉非替尼单药(n=176)或吉非替尼+化疗(n=174)治疗。入组患者中位年龄54岁,48%的患者为女性,84%的患者从不吸烟,ECOG PS=2的患者占21%,18%的患者存在脑转移。

PFS分析

中位随访时间17个月(7~30个月)。主要终点分析,吉非替尼+化疗治疗组的中位PFS显着更长,达16个月(95%CI 13.5~18.5个月),而吉非替尼单药治疗组为8个月(95%CI 7.0~9.0个月),吉非替尼+化疗治疗降低了49%的疾病进展或死亡风险(HR=0.51,95%CI 0.39~0.66,P<0.001)。同时在各亚组中,联合治疗组均显示出优势)。

OS分析

吉非替尼+化疗治疗组中位OS未达到(NC~NC),吉非替尼单药组为17个月(13.5~20.5个月),吉非替尼+化疗治疗降低了55%的死亡风险(HR=0.45,95%CI, 0.31~0.65,P<0.001)。同时在各亚组中,联合治疗组均显示出优势。

ORR分析

其他次要终点上,吉非替尼+化疗组的ORR为75.3%(95%CI, 68.3%~81.1%),吉非替尼组为62.5%(95%CI, 55.1%~69.3%),两组具有显着差异(P=0.01)。同时联合治疗组有更好的治疗缓解深度。

毒性

治疗毒性方面,≥3级临床相关不良事件发生率:吉非替尼+化疗治疗组为50.6%(95%CI, 43%~58.2%),吉非替尼单药治疗组为25.3%(95%CI, 19.4%~32.4%),两组具有统计学差异(P<0.001)。联合治疗组有30例(16.7%)患者因培美曲塞的毒性而中止试验,吉非替尼组只有2例(1.1%)患者因药物毒性退出。

研究结论

在吉非替尼单药治疗的基础上加用培美曲塞和卡铂作为一线治疗可显着延长EGFR突变阳性晚期NSCLC患者的无进展生存期和总生存期,但同时联合治疗的毒性也会增加。吉非替尼+培美曲塞+卡铂可作为EGFR突变阳性晚期非小细胞肺癌一线治疗的一种新的选择。

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    2019-06-14 liuyiping
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    2019-06-12 肿肿

    NSCLC下一步突破在于新靶点了,靶向治疗和免疫治疗基本见顶了,再有新的就需要新机制了

    0

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