NEJM: Bezlotoxumab在复发性艰难梭菌感染中的预防作用

2017-03-03 zhangchengli MedSci原创

艰难梭菌是就医患者感染性腹泻的最常见原因,在抗体治疗后复发很常见。Actoxumab bezlotoxumab是分别针对艰难梭菌毒素A和B的人源单克隆抗体。

艰难梭菌是就医患者感染性腹泻的最常见原因,在抗体治疗后复发很常见。Actoxumab bezlotoxumab是分别针对艰难梭菌毒素A和B的人源单克隆抗体。

近期,来自英国利兹一般疗养院、老医学院微生物系的Wilcox博士团队,进行了两项随机双盲安慰剂对照的3期临床试验,MODIFYI和MODIFYII。

该试验涉及2655名接受口服标准抗生素治疗原发性或复发性艰难梭菌感染的成人,研究了bezlotoxumab在预防复发性艰难梭菌感染中的作用。受试者单独给予bezlotoxumab(10mg/kg体重)、actoxumab联合bezlotoxumab(10mg/kg)或安慰剂的输注;在MODIFYI试验中,单独给予actoxumab(10mg/千克)输注,但在按计划的中间分析后中止。试验的主要终点是,在改良的意向治疗群体中,输注后的12周内复发性感染(初始临床治愈后的新发作)。

试验结果显示,在两项试验中,单独接受bezlotoxumab治疗,艰难梭菌感染的复发率都显着低于安慰剂组(MODIFYI:17%[67/386]vs.28%[109/95]);校正后差异为-10.1%;95%置信区间[CI]:-15.9~-4.3;P<0.001。MODIFYII:16%[62/395]vs.26%[97/378];校正后差异为-9.9%;95%CI:-15.5~-4.3;P<0.001)。此外,接受actoxumab联合bezlotoxumab治疗,艰难梭菌感染的复发率也显着低于安慰剂组(MODIFYI:16%[61/383]vs.28%[109/395];校正后差异为-11.6%;95%CI:-17.4~-5.9;P<0.001。MODIFYII:15%[58/390]vs.26%[97/378];校正后差异为-10.7%;95%CI:-16.4~-5.1;P<0.001)。进行预先指定的亚组分析(结合数据集)发现,在复发性感染高风险或不良结果的亚群中,bezlotoxumab治疗组的复发感染率,在两项试验中均低于安慰剂组。单独使用bezlotoxumab,初始治愈率为80%;actoxumab联合bezlotoxumab,初始治愈率为73%;安慰剂组,初始治愈率为80%。在各组中持续治疗率(初始治愈12周内没有复发)分别为64%,58%,and54%。这些组中不良事件的发生率相似,最常见的是腹泻和恶心。

两项实验结果表明,在接受抗生素治疗原发性或复发性艰难梭菌感染的受试者中,bezlotoxumab组与安慰剂组相比,复发感染率显着更低,并且安全性相似。加入actoxumab并没有改善功效。

原始出处:

Wilcox MH,Gerding DN,Poxton IR,et al. Bezlotoxumab for Prevention of Recurrent Clostridium difficile Infection.New England Journal of Medicine,2017.DOI:10.1056/NEJMoa1602615

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    2017-12-28 snf701207
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    2017-06-08 hb2008ye
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    2017-03-06 stupidox

    价格怎么样呢?

    0

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    2017-03-05 1e0ece0dm09(暂无匿称)

    谢谢指点

    0

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