ASCO 2014:Ibrutinib对治疗复发或难治慢性淋巴细胞白血病疗效显著

2014-06-06 Alexa 中国医学论坛报

题目:在复发或难治(R/R)CLL/小淋巴细胞性淋巴瘤中ibrutinib和ofatumumab的随机对照:RESONATE Ⅲ期试验结果Randomized comparison of ibrutinib versus ofatumumab in relapsed or refractory (R/R) chronic lymphocytic leukemia/small lymphocytic

题目:在复发或难治(R/R)CLL/小淋巴细胞性淋巴瘤中ibrutinib和ofatumumab的随机对照:RESONATE Ⅲ期试验结果Randomized comparison of ibrutinib versus ofatumumab in relapsed or refractory (R/R) chronic lymphocytic leukemia/small lymphocytic lymphoma: Results from the phase Ⅲ RESONATE trial.

摘要号:# LBA7008

报告时间:2014年6月3日 11:57 AM-12:09 PM CDT(美国中部夏令时间)

报告者:美国俄亥俄州立大学 John C. Byrd

Session Title:Leukemia, Myelodysplasia, and Transplantation

Session Type:Oral Abstract Session

研究简评(来自新闻通稿)

RESONATE Ⅲ期试验的早期结果显示,对R/R CLL患者,与标准的ofatumumab治疗相比,ibrutinib具有持久的肿瘤缓解效应,显著改善患者的生存。这是复发CLL治疗中首个与标准治疗相比可改善生存的口服药物。同样重要的是,该治疗的耐受性良好,副作用更少。

CLL是成人白血病中最常见的类型。其标准治疗为化疗-免疫治疗,即强的化疗与抗体如利妥昔单抗联合应用。然而,CLL患者多数为老年人,常不能耐受强的化疗。ofatumumab是这些患者的一个选择,但研究显示其疗效低于强的化疗。

领导该研究的John Byrd说道,“应用ibrutinib治疗,约80%的患者1年时仍维持缓解,是我们预期标准治疗结果的2倍。尽管该研究随访时间还短,但数据明确支持在这种情况下优先应用该药治疗。”

今年2月FDA通过加速审批流程批准ibrutinib治疗CLL,距离进入Ⅰ期临床试验还不足5年。

在该研究中,391例R/R CLL/小淋巴细胞性淋巴瘤(CLL一种亚型)患者在既往≥2种治疗后进展,随机接受ofatumumab或ibrutinib治疗。患者中位年龄为67岁,40%≥70岁,Rai分期Ⅲ/Ⅳ者占57%,17p缺失者占30%。

中位随访9.4个月后,ibrutinib组的缓解率显著高于ofatumumab组(42.6%对4.1%)。另外20%ibrutinib治疗的患者为部分缓解,淋巴细胞持续增多。与ofatumumab相比,ibrutinib使疾病进展风险降低了78.5%,死亡风险降低了57%。ibrutinib组中位PFS和OS未达到,ofatumumab组PFS期为8.1个月(HR=0.215,P<0.0001),OS的HR=0.434,P=0.0049。ibrutinib在2个极高危(17p缺失及嘌呤类似物抵抗)患者群中也有相似的高度活性。

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    2014-09-14 quxin068
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    2014-06-08 xsm924

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