ASCO 2014:贝伐单抗标准化疗用于SCLC疗效欠佳

2014-05-21 佚名 dxy

本研究为随机II-III期临床研究,研究的目的在于评估在广泛期小细胞肺癌患者中,在一线标准化疗的基础上联合贝伐单抗的治疗方案的有效性和安全性,来自于法国胸部肿瘤协作组的研究者们在ASCO 2014上发表了研究的摘要。 研究者所纳入的受试者为小细胞肺癌患者, 受试者先进行两个疗程的标准化疗作为诱导治疗,两次治疗的间隔时间为3周(顺铂-依托泊甙,或顺铂-环磷酰胺-表阿霉素-依托泊甙)。 如果受试者对诱

本研究为随机II-III期临床研究,研究的目的在于评估在广泛期小细胞肺癌患者中,在一线标准化疗的基础上联合贝伐单抗的治疗方案的有效性和安全性,来自于法国胸部肿瘤协作组的研究者们在ASCO 2014上发表了研究的摘要。

研究者所纳入的受试者为小细胞肺癌患者, 受试者先进行两个疗程的标准化疗作为诱导治疗,两次治疗的间隔时间为3周(顺铂-依托泊甙,或顺铂-环磷酰胺-表阿霉素-依托泊甙)。

如果受试者对诱导治疗存在反应,那么将这部分受试者按照1:1的比例随机分为2组,一组继续接受4个疗程的标准化疗,另一组在标准化疗的基础上联合贝伐单抗治疗(7.5mg/kg),继之以贝伐单抗单药治疗直至受试者病情出现进展或出现受试者不可耐受的毒性反应。

本研究的主要终点事件为在4个疗程后患者对治疗的反应率(随机化分组后的2个疗程之后)。

研究者共纳入了147例受试者。在最初2个疗程的诱导化疗之后,99例受试者对治疗存在反应,反应率为67.3%。在上述99例患者中,有74例受试者适合接受贝伐单抗治疗并接受随机化分组,标准化疗组37人,联合治疗组37人。中位化疗疗程在标准化疗组和联合治疗组都为6次。在联合治疗组贝伐单抗的治疗疗程为4次。

在经过4个疗程的治疗之后(在联合治疗组包括2个疗程的贝伐单抗治疗),两组之间的对治疗仍然存在反应的受试者所占的比例分别89.2%和91.9%,差异无显著统计学意义。

无进展生存期或生存期在两组间也不存在显著差异,中位无进展生存期在化疗组和联合治疗组分别为5.5月和5.3月,中位总体生存期分别为13.0月和11.1月。

在化疗组有22例(59.5%)受试者经历了一次或多次3-4级不良反应事件,而在联合治疗组则为23例(62.2%)受试者。在15例(40.5%)受试者中研究者观察到了由贝伐单抗所引起的毒性反应事件,有一例未预料到的毒性反应事件,致死性的硬膜下血肿。

本研究结果指出,在治疗第4个疗程时,贝伐单抗并不会增加对治疗存在反应的患者的比率。本研究为II期临床研究,本研究未能证实在广泛性非小细胞肺癌患者中,经治疗后预后能得到显著改善。因此,此部分研究不会深入进行III期临床研究。

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    2015-03-04 quxin068
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