NEJM:Givosiran治疗急性间歇性卟啉症

2020-06-11 MedSci原创 MedSci原创

Givosiran治疗可降低急性间歇性卟啉症患者发病率

肝δ-氨基乙酰丙酸合成酶1(ALAS1)表达增加导致δ-氨基乙酰丙酸(ALA)和胆色素原的积聚,是急慢性肝卟啉症的重要机制。Givosiran是一种RNA干扰疗法,抑制ALAS1的表达。
 
在III期临床研究中,有症状的急性肝卟啉症患者接受皮下注射Givosiran(每公斤体重2.5毫克)或安慰剂,每月一次,疗程为6个月。主要终点是急性间歇性卟啉症发作的年化率,包括住院治疗、急诊或在家中静脉注射血红素,次要终点是急性肝卟啉症患者的ALA和胆色素原水平,急性间歇性卟啉症患者血红素使用和每日疼痛评分。
 
共有94名患者参与研究,其中Givosiran组48名,安慰剂组46名。在89例急性间歇性卟啉症患者中,Givosiran组的平均年化发病率为3.2%,安慰剂组为12.5%,Givosiran组的发病率低74%,在94例急性肝卟啉症患者中,也发现了相似的结果。在急性间歇性卟啉症患者中,Givosiran可降低尿ALA和胆色素原水平,减少血红素使用天数,每日疼痛评分优于安慰剂。Givosiran组中观察到的主要不良事件是血清转氨酶水平升高、血清肌酐水平和肾小球滤过率变化以及注射部位反应。
 
研究认为,Givosiran治疗可降低急性间歇性卟啉症患者发病率。
 
原始出处:
 
Manisha Balwani et al. Phase 3 Trial of RNAi Therapeutic Givosiran for Acute Intermittent Porphyria. N Engl J Med, June 11, 2020.

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    2020-06-11 旺医

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