Lancet:Dupilumab治疗成人持续哮喘患者的疗效和安全性较好

2016-04-27 MedSci MedSci原创

Dupilumab,人抗白细胞介素-4受体α单克隆抗体,抑制白介素-4和白细胞介素13信号,2型介导的炎症的主要推动力。http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(16)30307-5/abstract

Dupilumab,是抗人白细胞介素-4受体α单克隆抗体,可抑制白介素-4和白细胞介素13信号(2型介导的炎症的主要推动因素)。正在接受中到大剂量吸入糖皮质激素加长效β2受体激动剂的不受控制持续性哮喘成年患者需要额外的治疗选择。该研究的目的是评估将dupilumab加入到中到大剂量吸入糖皮质激素加长效β2受体激动剂中治疗不受控制的持续性哮喘患者的疗效和安全性,无论基线嗜酸粒细胞计数如何。

研究人员进行了一项随机,双盲,安慰剂对照,平行组,关键2b阶段临床试验,在16个国家或地区的174个研究地点进行。参与者为被诊断为哮喘12个月或以上的成年患者(年龄≥18岁),基于2009年全球哮喘防治指南,这些患者接受中到大剂量吸入糖皮质激素加长效β2受体激动剂治疗。患者被随机分配(1:1:1:1:1)接收皮下dupilumab200毫克或300毫克每2周或每4周一次,或安慰剂,共24周的时间。主要终点是从基线到12周时,1秒内用力呼气量(FEV1 L)的变化,这些患者的基线嗜酸性粒细胞每微升至少300,在意向性治疗人群中进行评估。安全结果在接受至少一个剂量或一种研究药物部分剂量的所有患者中进行了评估。

共有769例患者(安慰剂组158例,dupilumab组611例)接受研究药物的至少一个剂量。在12周时与安慰剂组相比,在每μL至少300嗜酸性粒细胞的亚组中,FEV 1有最大的增加(每2周200毫克,p=0.0008; 每2周300毫克,p=0.0063),与安慰剂组相比(0.18 L [0 SE 0.05]),每2周的300毫克组(平均变化0.39 L [SE 0.05];平均差异0.21 [95%CI 0.06-0.36; p=0.0063])和200毫克组(平均变化0.43 L[0 SE 0.05];平均差0.26 [0.11-0.40,p=0.0008])的12周FEV 1都有最大变化。在总人群和每μL少于300嗜酸性粒细胞的亚组中,也同样观察到类似的显著上升(总人群中:每2周200毫克,P<0.0001; 每2周300毫克,P<0.0001;每μL<300嗜酸性粒细胞:每2周200毫克,p=0.0034; 每2周300毫克,p=0.0086),并分别持续到24周。同样,每2周一次的dupilumab在总人群中(70-70.5%),每μL至少300嗜酸性粒细胞的亚组中(71.2-80.7%),以及每μL少于300个嗜酸性粒细胞的亚组(59.9-67.6%)中,每年的病情恶化率都有最大量减少。与安慰剂组相比,dupilumab组最常见的不良反应为上呼吸道感染(33-41% vs 35%)和注射部位反应(13-26% vs 13%)。

在无法控制的持续性哮喘患者中,无论基线嗜酸性粒细胞计数是多少,Dupilumab都会增加肺功能和减少病情严重恶化,并有良好的安全性,因此,与单独的标准治疗相比,将其加入到吸入糖皮质激素加长效β2受体激动剂治疗中能改善不受控制持续性哮喘患者的生活。

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    2016-10-21 howi
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    2016-04-29 zhyy88

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