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ASH 2014:idelalisib用于复发性CLL的长期随访数据正在完善

2014-12-10 佚名 生物谷

  2014年第56届美国血液学会年会(ASH)于12月6日-9日在美国旧金山举行。近日,吉利德(Gilead)在会上公布了首个肿瘤学药物Zydelig(idelalisib)注册研究的长期随访结果,进一步描述了Zydelig治疗复发性慢性淋巴细胞白血病(CLL)和2种难治性惰性非霍奇金淋巴瘤(iNHL)的缓解持续时间(DOR)、无进展生存期(PFS)和安全性。 在美国,FDA于20

2014年第56届美国血液学会年会(ASH)于12月6日-9日在美国旧金山举行。近日,吉利德(Gilead)在会上公布了首个肿瘤学药物Zydelig(idelalisib)注册研究的长期随访结果,进一步描述了Zydelig治疗复发性慢性淋巴细胞白血病(CLL)和2种难治性惰性非霍奇金淋巴瘤(iNHL)的缓解持续时间(DOR)、无进展生存期(PFS)和安全性。

在美国,FDA于2014年7月加速批准Zydelig用于3种B细胞血癌的治疗,分别为:(1)批准Zydelig联合罗氏(Roche)抗癌药美罗华(Rituxan,通用名:rituximab,利妥昔单抗),用于适合Rituxan单药疗法的复发性慢性淋巴细胞白血病(CLL)患者的治疗;(2)批准Zydelig作为单药疗法,用于既往接受过至少2种系统治疗方案的复发性滤泡B细胞非霍奇金淋巴瘤(FL)患者和小细胞淋巴瘤(SLL)患者的治疗。

FDA根据总缓解率(ORR)加速批准了Zydelig用于FL和SLL的治疗,但患者总生存期(OS)数据尚未获得。

在iNHL患者中开展Study 101-09研究:

Study 101-09是一项关键单组II期研究,在125例既往经美罗华(Rituxan)和含烷化剂化疗方案治疗的难治性惰性非霍奇金淋巴瘤(iNHL,注:FL和SLL是2种类型的iNHL)患者中开展,评估了Zydelig的疗效和安全性。截止2014年6月的数据表明,有72例患者对Zydelig治疗响应,总缓解率(ORR)为57%(72/125);其中,12例(10%)实现完全缓解(CR),比年初公布的数据(7例,6%)提高了4%;50%实现部分缓解(PR),1%取得轻微缓解;根据最近的数据截止时间,平均缓解持续时间(DOR)为12.5个月,实现缓解的平均时间为1.9个月。FL患者组(n=40)平均缓解持续时间(DOR)为10.8个月,SLL患者组(n=17)数据未12.5个月。平均无进展生存期(PFS)为11.0个月,平均总生存期为20.3个月,90%的患者经历了淋巴结的缩小。研究中最常见的≥3级不良反应为腹泻/结肠炎(19%)和肺炎(12%),≥3级转氨酶升高发生于14%的患者中。

在CLL患者中开展的Study 116研究:

Study 116是一项关键性III期研究,在220例既往已接受治疗但对标准化疗不耐受的慢性淋巴细胞白血病(CLL)患者中开展,调查了Zydelig+Rituxan组合疗法用于经治CLL患者的疗效和安全性。该研究中的患者有资格进入开放标签扩展研究(Study 117)继续接受治疗。初步研究和扩展研究数据表明,随机分配至Zydelig+Rituxan治疗的110例患者,平均无进展生存期(PFS)已经获得,为19.4个月。

Study 116/117研究中,Zydelig+Rituxan治疗组最常见的≥3级的不良事件为腹泻/结肠炎(16%)和肺炎(13%),≥3级转氨酶升高发生在6%患者中。

在美国,Zydelig药品处方信息中包括一个黑框警告,指示致命的和严重的肝脏毒性、严重腹泻/结肠炎、肺炎和肠穿孔。

关于Zydelig(idelalisib):

Zydelig(idelalisib)是一种首创的高度选择性、口服有效的磷酸肌醇3-激酶delta(PI3K-delta)抑制剂。PI3K-delta信号对于B淋巴细胞的活化、增殖、生存、迁移(trafficking)至关重要,该信号在多种B细胞恶性肿瘤中过度活动。目前,吉利德正开发idelalisib作为单一制剂,以及与一些已获批的疗法和实验性疗法配伍,调查用于不同类型血癌的治疗。

Zydelig是吉利德获批的首个肿瘤学产品,目前已获美国和欧盟2大主要市场批准上市。分析师预计,到2017年,Zydelig的年销售额将突破15亿美元,使其当之无愧的成为吉利德后期管线中的一枚重磅明星药物。

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    2014-12-12 kksonne

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