ASCO-GI 2019:抢先看!达拉非尼联合曲美替尼在BRAF V600E突变的胆管癌患者中的研究

2019-01-18 肿瘤资讯 肿瘤资讯

美国临床肿瘤学会胃肠道肿瘤研讨会(ASCO-GI)将于2019年1月17—19日在美国旧金山召开,今年大会主题为“多学科治疗,个体化治疗,最理想的结果”。

美国临床肿瘤学会肠道肿瘤研讨会(ASCO-GI)将于2019年1月17—19日在美国旧金山召开,今年大会主题为“多学科治疗,个体化治疗,最理想的结果”。这是2019年第一场全球性学术盛宴,肠道领域当之无愧的世界顶级学术盛会,众多世界顶级胃肠道肿瘤专家汇聚一堂,分享最新研究进展,引领学术前沿及发展方向,影响临床实践指南的编撰。本次大会将报道达拉非尼(dabrafenib)联合曲美替尼(trametinib)在BRAF V600E突变的胆管癌患者中的研究结果。

Efficacy and safety of dabrafenib (D) and trametinib (T) in patients (pts) with BRAF V600E–mutated biliary tract cancer (BTC): A cohort of the ROAR basket trial

Oral Abstract Session B: Cancers of the Pancreas, Small Bowel, and Hepatobiliary Tract

Date/Time: Friday, January 18, 2019-2:00 PM-3:30 PM

背景

胆管癌是一种罕见的恶性肿瘤,预后差,一线治疗后的治疗选择和结果尚不明确,二线治疗的中位无进展生存期小于5个月,BRAF和MEK抑制剂的联合在BRFA V600E突变的甲状腺未分化癌、黑色素瘤和肺癌中是有效的,但在BRAF V600E突变的直肠癌疗效不明显。据报道,胆管癌患者中BRAF V600E的突变概率在0~20%,在ROAR试验中,将评估BRAF抑制剂达拉非尼(D)联合MEK抑制剂曲美替尼(T)对BRAF V600E突变的胆管癌患者治疗的疗效性和安全性。

方法

在这项非盲、Ⅱ期试验中,9种罕见肿瘤类型(包括胆管癌)的BRAF V600E突变患者将接受D(120mg,bid)+T(2mg,qd)治疗,直到出现不可耐受的毒性、疾病进展或死亡。入组患者为先前至少接受过1次系统治疗的晚期或转移性肿瘤患者。主要研究终点为客观缓解率(ORR),次要终点包括缓解持续时间(DOR)、无进展生存期(PFS)、总生存期(OS)、生物标志物相关性和安全性。

结果

截至2018年1月3日,共登记了33名胆管癌患者,其中有30名(91%)患者检测到BRAF V600E突变,中位年龄58岁,78%的患者先前至少接受2次系统治疗。最终32名患者被评估,研究者评估的ORR为41%(13/32;95% CI 24~59),同时在数据截止时,13名患者中有6名患者仍在接受治疗,7名(54%)患者缓解持续时间≥6个月。mPFS为7.2个月(95% CI 4.6~10.1个月),mOS为11.3个月(95% CI 7.3~17.6个月)。在≥3名患者中发生了3/4级不良反应事件,包括γ-谷氨酰转移酶升高(n=3,9%)和白细胞数减少(n=3,9%)。

结论

达拉非尼联合曲美替尼在胆管癌患者中显示出了有前景的疗效,并具有良好的安全性,胆管癌患者应当考虑BRAF基因检测,对于BRAF V600E突变的胆管癌患者应当考虑达拉非尼联合曲美替尼的治疗方案。

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    2019-06-27 quxin068
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    2019-01-20 zhaojie88
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