Blood: selinexor治疗急性骨髓性白血病的I期临床试验

2017-06-21 海北 MedSci原创

Selinexor是一种全新的选择性核输出抑制剂。该化合物可以抑制exportin 1的蛋白功能,导致肿瘤抑制蛋白在细胞核内的聚积,然后引起肿瘤细胞死亡。

Selinexor是一种全新的选择性核输出抑制剂。该化合物可以抑制exportin 1的蛋白功能,导致肿瘤抑制蛋白在细胞核内的聚积,然后引起肿瘤细胞死亡。

一个关于selinexorI期剂量递增临床试验已经开始,检测该化合物治疗晚期血液肿瘤患者的安全性和有效性。在20131月到20146月期间,95名患有复发性或难治性急性白血病的患者被招募。他们以21天或28天为周期,摄入48或是10剂量的selinexor

观察到的最常见的不良反应是1级或2级结肠/胃肠道毒性。这些不良反应大多能被支持性治疗控制。唯一的非血液相关的3级或4级不良反应,疲劳,会在大于5%的患者人群中出现。该化合物没有报道有剂量限制性毒性或是累计毒性。

根据此次整体的安全性和有效性数据,在II临床试验中,推荐的剂量是60mg,每周两次给药,给药周期为四周。

总体来说,在此次I期临床的81名患者中,14%的患者达到了客观反应,31%的患者骨髓母细胞的数量较基线降低了50%。和没有反应的患者相比,达到客观反应的患者中,无进展生存期的中位数有了显著的延长,从1.3个月延长到了5.1个月。总体生存期也有了显著延长,从2.7个月延长到了9.7个月。

这些研究表明,selinexor作为单一疗法治疗复发或难治性急性白血病是安全的。

原始出处:

Ramiro Garzon et al. A phase 1 clinical trial of single-agent selinexor in acute myeloid leukemia. BLOOD, 15 JUNE 2017 x VOLUME 129, NUMBER 24. DOI: 10.1182/blood-2016-11- 750158.

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根据近日发表于美国血液学会官方杂志Blood上的文章表示,一种实验室靶向疗法对复发性或难治的血液癌症—急性髓系白血病(AML)提供了全新的治疗方法。多达15%的AML患者IDH2基因突变,从而防止白细胞从中性粒细胞中成熟,相反,这些白细胞成为白血病细胞。AML的标准疗法是靶向所有白细胞,而此次实验疗法enasidenib却抑制突变IDH2基因,不会扼杀白血细胞,而是让不成熟的白细胞自然成熟,这