新型BTK抑制剂泽布替尼在非霍奇金淋巴瘤中的应用进展

2019-09-02 佚名 肿瘤资讯

布鲁顿酪氨酸激酶(BTK)抑制剂的出现为B细胞非霍奇金淋巴瘤(B-NHL)的治疗带来了根本性改变,也是近些年来血液肿瘤领域研究最为活跃的药物之一。近期,特邀江苏省人民医院的范磊教授围绕新型BTK抑制剂泽布替尼(Zanubrutinib)在B-NHL中的应用进行了采访,详情如下。

布鲁顿酪氨酸激酶(BTK)抑制剂的出现为B细胞非霍奇金淋巴瘤(B-NHL)的治疗带来了根本性改变,也是近些年来血液肿瘤领域研究最为活跃的药物之一。近期,特邀江苏省人民医院的范磊教授围绕新型BTK抑制剂泽布替尼(Zanubrutinib)在B-NHL中的应用进行了采访,详情如下。

范磊,医学博士、主任医师、副教授,江苏省人民医院血液科 科室副主任,中国抗癌协会第一届青年常务理事,中国抗癌协会血液肿瘤专业委员会第一届青委副主委,中国抗癌协会血液肿瘤专业委员会委员,江苏省医学会血液分会青委副主委,美国纽约哥伦比亚和康奈尔大学附属纽约长老会医院博士后,研究方向为淋巴肿瘤的精确诊疗.

泽布替尼在复发难治MCL中的疗效:有效率超过80%

套细胞淋巴瘤(MCL)是一种相对少见的侵袭性淋巴瘤,虽然患者经过一线美罗华和中高剂量阿糖胞苷治疗后预后会改善,但仍有相当一部分患者会在随访过程中会出现疾病进展或复发。而这种高度侵袭性肿瘤一旦出现疾病复发,临床上可选择的治疗手段非常有限。BTK抑制剂伊布替尼单药治疗复发/难治性MCL取得了不错的疗效。从最新发布的BGB-3111-206研究更新数据来看,新型BTK抑制剂泽布替尼治疗复发/难治性MCL的总体有效率很高,超过80%,并且其中58%的患者获得了比较深的完全缓解。在治疗相关副作用方面,尤其是房颤的发生率较之前的BTK抑制剂明显降低。从长期生存如无进展生存(PFS)的数据来看,泽布替尼对复发/难治性MCL的中位PFS可能要优于伊布替尼。

泽布替尼在复发难治CLL中的疗效:有效率高达85%

慢性淋巴细胞白血病(CLL)是在欧美国家发病率最高的成人白血病,在我国的发病率相对较低,但近年来随着生活水平的提高以及人均寿命的延长,我国CLL的患者越来越多。就目前来看,CLL是一个不可治愈的疾病,即几乎所有的CLL患者最后在随访期间都会出现疾病进展、复发或难治。因此,对于这部分患者,尤其是老年患者,存在未满足的临床需求。BGB-3111-205研究主要探讨了泽布替尼在复发/难治性CLL患者中的疗效,虽然第一代BTK抑制剂已经取得了不错的效果,但作为新型BTK抑制剂的代表,泽布替尼在该研究中获得的数据也非常出色。总体而言,泽布替尼的有效率高达85%左右,尤其对于一些高危甚至超高危del(17p)或TP53突变的患者,其有效率可达86%,这是极其不易的,因为以往这部分患者的治疗手段有限,生存期短,而从目前的数据来看,泽布替尼单药治疗的有效率能够达到86%,并且6个月PFS可达到90%以上。因此,BGB-3111-205研究的现有数据证实了泽布替尼对复发/难治性CLL无论在近期疗效还是远期疗效上都表现出很好的临床疗效。

泽布替尼在复发难治WM中的疗效:单药治疗有效,包括MYD88野生型WM患者

华氏巨球蛋白血症(WM)是一类更为少见的B细胞非霍奇金淋巴瘤,以往相对被忽视。在过去,虽然WM的治疗方法很多,但始终缺少标准治疗方案,无论是一线还是二线。第一代BTK抑制剂在WM的一线和二线治疗中均取得了很好的临床疗效。

今年的欧洲血液学年会(EHA)上公布的302临床研究主要探讨了泽布替尼治疗复发/难治性WM的疗效。该研究设计为两个队列,第一队列是针对复发/难治性WM,采用泽布替尼和伊布替尼进行头对头对比,目前这部分的结果尚未公布。第二队列则是使用泽布替尼单药治疗MYD88野生型WM。之所以针对这部分人群,是因为既往临床研究已经证实第一代BTK抑制剂对MYD88野生型WM的疗效欠佳,这类患者的治疗是临床上未满足的需求。因此,该研究的第二队列针对的是泽布替尼治疗MYD88野生型WM患者。从目前的结果来看,近期疗效良好,总体有效率达到77%,并且15.4%的患者达到非常好的部分缓解(VGPR)。我们更加期待中长期PFS的数据。从该研究第二个队列以及公布的临床研究来看,泽布替尼单药治疗MYD88野生型WM是有效的,我们更加期待302研究第一队列临床数据的更新。

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    2019-09-05 jklm09
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    2019-09-04 fengting7