Am J Respir Crit Care Med:Brodalumab对中-重度哮喘无治疗作用

2013-12-11 达达kayla dxy

白介素-17(IL-17)传导通路在哮喘的发展和维持中发挥着重要的作用。以阻断人IL-17受体A(IL-17RA)介导的传导通路为目的的细胞因子靶向治疗有可能成为哮喘治疗的新方法。Brodalumab(AMG 827,美国安进公司提供)是人类抗IL-17RA免疫球蛋白(IgG2)单克隆抗体,对人类IL-17RA有高亲和力,能够阻断IL-17家族细胞因子的生物活性。为了评估Brodalumab在规范

白介素-17(IL-17)传导通路在哮喘的发展和维持中发挥着重要的作用。以阻断人IL-17受体A(IL-17RA)介导的传导通路为目的的细胞因子靶向治疗有可能成为哮喘治疗的新方法。Brodalumab(AMG 827,美国安进公司提供)是人类抗IL-17RA免疫球蛋白(IgG2)单克隆抗体,对人类IL-17RA有高亲和力,能够阻断IL-17家族细胞因子的生物活性。为了评估Brodalumab在规范吸入糖皮质激素治疗后,病情仍未得到控制的中-重度哮喘患者中的疗效及安全性,来自美国威斯康辛州威斯康辛大学医学与公共卫生学院的William W.Busse博士及其同事开展了一项研究。该研究结果发表在2013年12月1日出版的《美国危重症医学杂志》上。研究人员发现,Brodalumab对规范治疗后症状控制不佳的中-重度哮喘患者无治疗作用。;【原文下载

该研究为随机,双盲,安慰剂对照,剂量范围的2A期临床研究。该研究的临床注册号为:NCT01199289。研究人员将患者以1:1:1:1的比例分入安慰剂组和不同剂量的Brodalumab治疗组(140,210,280mg),所有患者分别在第1天和之后的第1、2、4、6、8、10周进行皮下注射给药。研究采用的主要指标为哮喘控制问卷(ACQ)评分改变;次要观察指标为舒张前后一秒用力呼气容积(FEV1),晨间峰流速(AM PEF),急救短效支气管舒张剂(SABA)使用次数,每日哮喘症状评分和无症状天数的改变等。同时记录不良事件。根据气道可逆性高低,基础一秒用力呼气容积占预计值百分比,哮喘控制问卷积分,吸入激素用量,呼出气一氧化氮值,外周血嗜酸粒细胞百分比,性别,种族和体重等,将受试者分为9个亚组进行分析,以寻找可能的适用对象。采用末次观察推进法来填补缺失值。

共有来自10个国家47个研究中心的302例症状控制不佳的中-重度哮喘患者参与其中。研究结果表明,在整体受试人群中,各组受试者的各项观察指标均无改善。各亚组中仅高气道可逆性亚组(吸入舒张剂后FEV1改善率≥20%为高,FEV1改善率<20%则为低)患者在采用210mg的Brodalumab进行皮下注射后,可观察到ACQ出现显著改善。但由于统计时未对各亚组数据进行校正,且这一治疗效果在中等剂量而非高剂量时出现,该结果的意义仍有待商榷。各组均有出现不良反应,最常见的为哮喘发作,上呼吸道感染和注射部位皮疹。

作者认为拮抗白介素17受体A对病情控制不佳的中-重度哮喘患者无治疗作用。但对存在高气道可逆性的此类患者,其治疗作用仍有待明确。

原文出处

Busse WW, Holgate S, Kerwin E, Chon Y, Feng J, Lin J, Lin SL.Randomized, Double-Blind, Placebo-controlled Study of Brodalumab, a Human Anti-IL-17 Receptor Monoclonal Antibody, in Moderate to Severe Asthma.Am J Respir Crit Care Med. 2013 Dec 1;【原文下载

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    2014-04-07 snf701207
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    2013-12-13 zxl733
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