——新型单克隆抗体Ixekizumab获欧盟批准治疗斑块型银屑病,将成全球第2款IL-17A抗炎药 2016年3月1日,欧洲药品管理局(EMA)人用医药产品委员会(CHMP)支持批准ixekizumab用于适合系统治疗(systemic therapy,即全身疗治)的中度至重度斑块型银屑病(plaque psoriasis)成人患者的治疗。ixekizumab是一种靶向促炎性细胞因子IL-17A的单克隆抗体,IL-17A被认为在多种自身免疫性疾病的炎性反应中发挥关键作用。 ixekizumab:继诺华Cosentyx之后上市的第2款IL-17A单抗抗炎药 欧盟委员会(EC)在药品审查时,通常都会采纳CHMP的建议,这意味着ixekizumab很可能在2-3个月内获批上市,成为继诺华重磅抗炎药Cosentyx(secukinumab)之后,在欧洲上市的第二款IL-17A单抗药物。届时,ixekizumab将以品牌名Taltz上市销售。之前,诺华Cosentyx已在美国和欧盟获批治疗斑块型银屑病、银屑病关节炎(PsA)、强直性脊柱炎(AS)。 在美国监管方面,礼来ixekizumab预计将在2016年上半年获批斑块型银屑病适应症,之后是银屑病关节炎(PsA)适应症。业界预测,如果ixekizumab的这2个适应症都成功获批,其年销售峰值将突破10亿美元。 然而,有分析师指出,该市场将很快迎来其他竞争产品,默沙东的MK-3222及强生(JNJ)的IL-23阻断剂guselkumab已进入III期临床开发;另一方面,在安进放弃与阿斯利康联合开发IL-17A单抗brodalumab之后,医药界出了名的收购狂Valeant出资$4.45亿买进brodalumab,目前正在迅速推进该药的临床开发。 当前,银屑病市场由TNF阻断剂(抗肿瘤坏死因子单抗)统治,然而有高达40%的患者对TNF阻断剂治疗不足或无反应。而IL-17单抗抗炎药的上市,将极大地改善银屑病、银屑病关节炎及其他炎症性疾病的临床标准护理。 ixekizumab:大型III期临床项目击败安进超级重磅抗炎药恩利(Enbrel) CHMP的积极意见,是基于在中度至重度斑块型银屑病群体中开展的最大规模的III期临床项目的数据。该项目包括3个双盲、多中心III期研究(UNCOVER-1, -2,-3),涉及21个国家超过3800例中度至重度斑块型银屑病成人患者,研究结果证明了ixekizumab的疗效和安全性。这3个研究评估了ixekizumab(起始给药剂量160mg,之后每2周或每4周给药剂量80mg)相比安慰剂治疗12周的疗效和安全性,其中,UNCOVER-2研究和UNCOVER-3研究还纳入了一组额外的对照组,该对照组中患者接受依那西普(etanercept,50mg,每周2次)治疗12周。该项目3个研究的安全性和疗效,将进一步评估直至60周。 研究结果显示,这3个关键性研究均达到研究的所有主要终点和关键次要终点,ixekizumab在各项皮损消退指标上均优于安进的重磅抗炎药Enbrel(恩利,通用名:etanercept,依那西普)和安慰剂,数据具有统计学显著性。这些数据对于罹患中度至重度斑块型银屑病的患者而言具有重要意义,ixekizumab一旦获批上市,将帮助更多的银屑病患者的病情获得全面缓解。 关于ixekizumab: ixekizumab是一种单克隆抗体,针对具有促炎作用的细胞因子白介素-17A(IL-17A)具有较高的亲和力和特异性,可抑制IL-17A与IL-17受体的结合。对于银屑病患者而言,IL-17A在驱动角化细胞(皮肤细胞)过度增殖和活化方面发挥了重要作用。ixekizumab不会与细胞因子IL-17B、IL-17C、IL-17D、IL-17E或IL-17F相结合。Ixekizumab通过皮下注射给药。目前,礼来也正在推进ixekizumab治疗银屑病关节炎及其他炎症性疾病的相关临床研究。 New Drugs Online Report for ixekizumab Information Generic Name: ixekizumab Trade Name: Taltz Synonym: LY2439821 Entry Type: Licence extension / variation Development and Regulatory status UK: Unknown EU: Unknown US: Unknown UK launch Plans: Available only to registered users Actual UK launch date: Comments Mar 15: status uncertain - NCT01870284 was withdrawn due to ´unexpected operational issues outside of Lilly´s control´ and no further trials are in progress; it is no longer listed on Lilly´s pipeline [3,4]. 25/03/2015 17:19:04 Oct 13: Remains PIII [2]. 10/03/2014 10:45:01 Trial or other data Jun 13: NCT01870284 (SPIRIT A1) is a multicentre, randomized, double-blind, active (adalimumab) and placebo-controlled 16-week study followed by long term evaluation of efficacy and safety of ixekizumab in 408 patients with active ankylosing spondylitis. Inclusion criteria include: diagnosis of moderate to severe AS with prior documented Xray evidence fulfilling the Modified New York criteria for AS (1984); active AS defined as Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) ≥4 and the spinal pain score ≥4 on a numeric rating scale; inadequate response to NSAIDs. The primary outcome is assessment of SpondyloArthritis International Society Criteria (ASAS20). The study starts Aug 13 and is due to complete Dec 17 (primary outcome data collection Oct 15) [1]. 10/06/2013 13:51:44 References Available only to registered users Category BNF Category: Drugs that suppress the rheumatic disease process (10.01.03) Pharmacology: Humanized anti–interleukin-17 monoclonal antibody Epidemiology: Annual incidence of AS is ~ 6.9 per 100,000 population, with around 2,300 new cases each year in England and Wales (NICE TA143. May 2008). Around 71,000 people in England are estimated to have AS (NICE Costing statement: Golimumab for the treatment of AS. August 2011). Indication: Ankylosing spondylitis (AS) Method(s) of Administration Subcutaneous Company Information Name: Eli Lilly US Name: Eli Lilly Further Information Anticipated commissioning route (England) CCG High cost drug list? Yes Implications Available only to registered users |