WCLC2018上的SCLC研究
IMpower133:期中分析达到共同主要终点(OS PFS)
【连载】SCLC的基本背景与治疗现状——从nivo获批看SCLC的治疗进展(1)
【连载】SCLC的免疫治疗——从nivo获批看SCLC的治疗进展(2)
【连载】抗体类药物在SCLC治疗中的情况——从nivo获批看SCLC的治疗进展(3)
【连载】抗血管生成等生物学机制在SCLC治疗中的应用——从nivo获批看SCLC的治疗进展(4)
才饮长沙水,
又食武昌鱼。
首先是anlotinib三线治疗SCLC,因为本来这次CSCO的日程里是有这项内容的,结果后来取消了,不过也就晚三天看到。
Background
Treatment for patients with relapsed small cell lung cancer (SCLC) who failed ≥ 2 lines of chemotherapy have high unmet needs. Anlotinib is a novel TKI with highly selective inhibition effects on multi-targets, especially on VEGFR, c-Kit, PDGFR, FGFR. Here we report results of a phase 2 study of anlotinib for the third-line and further-line treatment of SCLC. (ALTER1202, NCT03059797).
2线及以上化疗后复发的的小细胞肺癌的治疗需求远远未被满足。
Method
Eligible either limited- or extensive-stage SCLC patients with disease progression after ≥ 2 lines of chemotherapy were randomized 2:1 to anlotinib or placebo (12 mg PO QD from day 1 to 14, every 3 weeks). The primary endpoint was PFS and secondary endpoints was OS, ORR, DCR, quality of life and safety.
招募标准:2线及以上化疗失败的局限期或者广泛期SCLC患者,2:1随机分配到安罗替尼组和安慰剂组(给药每2周后停1周),主要终点PFS。
Result
Between March 2017 and May 2018, 120 patients from 11 centers were randomized to either anlotinib arm (n=82) or placebo arm (n=38). Until the data cutoff date (30 Jun 2018), median PFS was 4.1 months (95%CI, 2.8 to 4.2 months) in anlotinib arm and 0.7 months (95% CI, 0.7 to 0.8 months) in placebo arm (HR, 0.19; 95% CI, 0.12 to 0.32, p<0.0001). OS data were not sufficiently mature for analysis. Although ORR was similar, considerable improvement in DCR was observed in anlotinib arm (71.6% vs 13.2%, p<0.0001). Treatment-related adverse events (TRAEs) occurred more frequently in anlotinib arm than that in placebo (87.7% and 74.4%). The most common TRAEs were hypertension, anorexia, fatigue, and hand-foot syndrome. Grade ≥3 TRAEs occurred in 29 (35.8%) of patients in anlotinib arm and 6 (15.4%) in placebo arm, respectively.
2017年3月至2018年5月,11个中心招募了120命患者,截止至data cutoff日期2018年6月30日,两组中位无进展生存日期/mPFS情况,anlotinib vs placebo :4.1 mos (2.8 - 4.2 mos,注: 95% CI,下同) in anlotinib arm and 0.7 mos (0.7 - 0.8 mos),HR 0.19(0.12 - 0.32, p<0.0001),降低了81%的进展风险。另外从图来看,两条曲线基本分的还是很开。
OS数据还不成熟。
客观缓解率ORR相似(因为一线和二线分别40-50%和20%,三线及三线以上估计只有个位数的缓解率了,绝对值上基本和安慰剂接近,样本量太小导致统计学上不显著),但是疾病控制率优势明显:71.6% vs 13.2%, p<0.0001。
两组的治疗相关不良事件87.7% vs 74.4%,3级以上35.8% vs 15.4%。
那么还可以期待什么?我想看一个是OS的提升,PFS的大幅度改善最终体现在OS上有多少、PFS上的提升有多少转化为OS的提升,毕竟贝伐珠和pazopani失败的例子都是只改善PFS,没有提升OS;另外期待一些亚组的分析,按治疗线程、按SCLC的分期等等。
另外apatinib也有两个SCLC的单臂研究,我把三个的数据汇总了下,虽然不能拿来直接比。
如果安罗替尼数据算亦可赛艇的话,那么让我们更一起期待PLENARY SESSIONS的IMPower 133的报告。
另外是针对DLL-3靶点,除了AbbVie押宝的ROVA-T外,AMGEN也开发了基于BiTE平台的AMG 757 和基于CAR-T开发的AMG 119。