Lancet respir med:依法卡托可用于1-2岁囊性纤维化患儿,疗效好、安全性高

2018-06-08 MedSci MedSci原创

注释:囊性纤维化是一种遗传性外分泌腺疾病,主要影响胃肠道和呼吸系统,通常具有慢性梗阻性肺部病变、胰腺外分泌功能不良和汗液电解质异常升高的特征。Ivacaftor(依法卡托)对于2岁及以上的携带特异性CFTR突变的囊性纤维化患儿一般是安全有效的。依法卡托是否可用于2岁以下的患儿尚无明确数据,现研究人员对依法卡托用于1-2岁的携带特异性CFTR突变的囊性纤维化患儿的疗效和安全性进行评估。研究人员进行一

注释:囊性纤维化是一种遗传性外分泌腺疾病,主要影响胃肠道和呼吸系统,通常具有慢性梗阻性肺部病变、胰腺外分泌功能不良和汗液电解质异常升高的特征。

Ivacaftor(依法卡托)对于2岁及以上的携带特异性CFTR突变的囊性纤维化患儿一般是安全有效的。依法卡托是否可用于2岁以下的患儿尚无明确数据,现研究人员对依法卡托用于1-2岁的携带特异性CFTR突变的囊性纤维化患儿的疗效和安全性进行评估。

研究人员进行一多中心的、单臂、两队列的3期临床试验(ARRIVAL),招募1-2岁(不满2岁)的已确诊的携带特异性CFTR突变的囊性纤维化患儿。予以依法卡托 50mg(体重在7-14kg)或75mg(14-25kg)口服 ,12小时一次。A队列患儿(招募自7个地方)治疗3天半;B队列患儿(招募自13个地方)持续治疗24周。主要结点:药物代谢动力学(A队列)和安全性(A和B队列)。B队列的次要结点是至少接受一次依法卡托治疗的患儿的药代动力学以及汗液氯化物浓度的绝对变化值。

2016年8月25日-2017年11月1日,A队列研究招募了7位患儿,其中5位的治疗剂量为50mg、2位为75mg,均完成治疗;B队列研究招募了19位患儿,其中一位来自A队列,所有患儿的治疗剂量均为50mg,18位患儿完成治疗(1位因抽血困难而退出)。

药代学提示药物暴露量与2-6岁和成人相似。无需中断治疗的副反应发生。A队列3位(43%)患儿发生需紧急治疗的轻度副反应,经分析认为与依法卡托无关。24周时,B队列19位患儿中有18位(95%)出现需紧急治疗的副反应,大多为轻中度,最常见是咳嗽(14位[74%])。B队列2位患儿发生4例严重副反应:1位发生便秘(可能与依法卡托相关)、末端肠梗阻和疱疹样湿疹,另1位患儿发生持续性咳嗽,均需要住院治疗。18位患儿中有5位(18%)出现天冬氨酸或丙氨酸转氨酶升高超过正常上限的3倍(在两个同时合并感染的患儿中升高达8倍)。24周时,汗液氯化物浓度绝对变化值的平均值(与起始相比)为-73.5(SD 17.5)mmol/L。生长参数正常。与起始相比,24周时,大便弹性蛋白酶-1增多、免疫反应性胰蛋白酶原减少。起始时血清脂肪酶和淀粉酶均升高,开始治疗后均迅速降低。

依法卡托用于1-2岁幼儿长达24周,安全、耐受性良好,并可迅速降低汗液氯化物浓度并维持。胰腺功能的生物标志物升高提示早期应用依法卡托可保留胰腺的外分泌功能。目前正在12月内的新生儿中继续该项研究。

原始出处:

Margaret Rosenfeld,et al.Ivacaftor treatment of cystic fibrosis in children aged 12 to <24 months and with a CFTR gating mutation (ARRIVAL): a phase 3 single-arm study.The Lancet Respiratory Medicine. June 06,2018.https://doi.org/10.1016/S2213-2600(18)30202-9

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    2018-09-23 wolongzxh
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    2018-12-26 howi
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    2018-06-08 内科新手

    谢谢梅斯提供这么好的信息,学到很多

    0

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    2018-06-08 衣带渐宽

    学习

    0

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