NEJM:使用重组因子VIII治疗的重症血友病A患者有较高的抑制剂发生率

2016-05-26 MedSci MedSci原创

中和抗–VIII因子抗体产生(抑制剂)治疗重度血友病A患者可能取决于替代治疗的集中使用。原始出处:Flora Peyvandi,Pier M. Mannucci,Isabella Garagiola,et al.A Randomized Trial of Factor VIII and Neutralizing Antibodies in Hemophilia A,NEJM,2016.5.26

重度血友病A患者中和抗–VIII因子抗体(抑制剂)的发展可能取决于替代治疗的集中使用。

研究人员进行了一项随机试验,以评估在那些使用含有血管假性血友病因子血浆来源的凝血因子VIII或重组VIII因子治疗的患者中,因子VIII抑制剂的发生率。符合标准的患者(男性,年龄<6岁,患有严重的血友病A,此前没有使用任何因子VIII治疗或仅使用血液成分进行最小化治疗)来自于42个研究地点。

在筛选的303名患者中,264例患者接受随机分组,251例患者接受了分析。76例患者被发现含有抑制剂,其中50例有高滴度抑制剂(≥5 Bethesda单位)。接受血浆源性因子VIII治疗的125例患者中的29例患者被发现血液内含有抑制剂(20例有高滴度抑制剂),在126例接受重组因子VIII治疗的患者中有47例被发现血液内含有抑制剂(30例有高滴度抑制剂)。血浆源性因子VIII治疗的患者所有抑制剂的累计发生率为26.8%(95%可信区间[CI],18.4至35.2),重组因子VIII治疗的患者累计发生率为44.5%(95%CI,34.7至54.3);高滴度抑制剂的累积发生率分别为18.6%(95%CI,11.2至26.0)和28.4%(95%CI,19.6至37.2)。在所有抑制剂的主要终点的Cox回归模型中,重组因子VIII治疗比血浆源性因子VIII治疗的抑制剂发生率高87%(风险比,1.87; 95%CI,1.17至2.96)。该联系在多变量分析中并没有改变。对于高滴度抑制剂,危险比为1.69(95%CI,0.96至2.98)。当分析仅限于重组因子VIII产品而不是第二代全长重组因子VIII产品时,对于所有抑制剂(危险比,1.98; 95%CI,0.99至3.97)和高滴度抑制剂(危险比,2.59; 95%CI,1.11至6.00)的效果评估是类似的。

使用含有血管假性血友病因子血浆来源的凝血因子VIII治疗的患者比那些使用重组因子VIII治疗的患者抑制剂发生率低。

原始出处:

Flora Peyvandi,Pier M. Mannucci,Isabella Garagiola,et al.A Randomized Trial of Factor VIII and Neutralizing Antibodies in Hemophilia A,NEJM,2016.5.26

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    2017-05-02 juliusluan78
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    2016-09-14 jklm09
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