基于生存预测模型,对FLAURA研究OS数据进行预测

2019-05-28 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年会即将于5月31日至6月4日在美国芝加哥举办,今年的主题为“Caring for Every Patient, Learning from Every Patient”,本次会议中众多最新研究结果将公布。在EGFR突变阳性晚期非小细胞肺癌一线治疗上,FLAURA研

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年会即将于5月31日至6月4日在美国芝加哥举办,今年的主题为“Caring for Every Patient, Learning from Every Patient”,本次会议中众多最新研究结果将公布。在EGFR突变阳性晚期非小细胞肺癌一线治疗上,FLAURA研究改变了临床实践,目前研究的总生存(OS)数据还未公布,本次ASCO会议上,基于生存预测模型,研究者公布了其对FLAURA研究OS数据的预测结果,

研究背景

FLAURA研究是一项头对头比较第三代EGFR-TKI奥希替尼和第一代药物(吉非替尼或厄洛替尼)一线治疗EGFR突变阳性晚期非小细胞肺癌(NSCLC)疗效和安全性的随机双盲、国际多中心Ⅲ期临床研究,已经公布的结果显示,奥希替尼组的中位无进展生存期为18.9个月,而吉非替尼或厄洛替尼组为10.2个月,奥希替尼降低了54%的疾病进展风险(HR=0.46,95% CI 0.37~0.57,P<0.0001)。总生存方面,中期分析结果显示:两组的中位OS均未达到,但奥希替尼组降低了37%的死亡风险(HR=0.63,95% CI 0.45~0.88,P=0.0068)。为了更好地了解奥希替尼超出观察试验随访期的长期生存潜力,研究者使用数学参数生存模型来预测FLAURA研究5年时患者的临床合理生存率。

研究方法

根据已公布的最佳实践指南,基于观察到的FLAURA研究OS统计数据和可视化拟合优度检验来评估候选参数存活模型。研究者考虑了两种建模方法:将治疗作为其中一个协变量的单一模型;分别适用于奥希替尼和吉非替尼/厄洛替尼组的独立模型组合。通过最佳拟合优度检验,报告FLAURA研究预估的5年生存率。

研究结果

FLAURA研究OS数据的最佳拟合参数生存模型是Weibull模型,将治疗作为一个协变量加入到分析中 。基于该模型,研究者预估的奥希替尼组中位OS为41.4个月,而吉非替尼或厄洛替尼组中位OS为30. 6个月。奥希替尼组3年和5年的生存率分别为57.3%(95% CI 46.6%~69.2%)和31.1%(95% CI 23.7%~41.8%),相比之下,吉非替尼/厄洛替尼组的3年和5年的生存率分别为41.1%(95% CI 31.9%~52.9%)和15.5%(95% CI 11.6%~22.1%)。

研究结论

基于FLAURA研究OS数据的最佳拟合参数生存预测模型预估5年生存率,使用EGFR-TKI一线治疗EGFR突变阳性晚期NSCLC,第三代药物奥希替尼治疗组是第一代药物吉非替尼/厄洛替尼治疗组的2倍(31.1% vs 15.5%),期待未来FLAURA研究的长期随访数据(OS成熟度为60%)来进一步验证这一发现。

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    2019-05-28 lovetcm

    第三代肯定强,问题在于耐药了呢?怎么办

    0

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    2019-05-28 CHANGE

    梅斯里提供了很多疾病的模型计算公式,赞一个!

    0