NEJM:一个持久的PCSK9干扰RNAi治疗抑制剂-Inclisiran

2016-11-14 xing.T MedSci原创

在这项1期试验中,运用Inclisiran没有观察到严重的不良反应。300mg或更大剂量(单次或多次剂量)能显著降低LDL胆固醇和PCSK9水平至少6个月。

近日,顶级医学期刊NEJM上发表了一篇研究文章,旨在介绍了Inclisiran,一种长效的干扰RNA治疗抑制剂,能够抑制枯草溶菌素转化酶9(PCSK9)的合成,PCSK9可靶向降低低密度脂蛋白(LDL)胆固醇水平。
 
在1期试验中,研究人员将LDL胆固醇水平超过100mg/dL的健康志愿者按3:1的比例随机分组,分别接受皮下注射Inclisiran或安慰剂,Inclisiran组的参与者单次给予递增剂量(剂量为25、100、300、500或800 mg)或多次给药(125 mg,每周四次;250mg,每隔一周两次;300或500 mg每月两次,有无合用他汀类药物治疗);各剂量组有4-8名参与者,研究者对其安全性、副作用和药效学指标(PCSK9水平、LDL胆固醇水平以及探测性脂质变量)进行评估。
 
研究者发现Inclisiran最常见的不良反应为咳嗽、骨骼肌肉疼痛、鼻咽炎、头痛、后背痛、腹泻等,所有不良反应均为轻度或中度,没有严重的不良反应或因不良反应而停药。有一名参与者出现γ-谷氨酰转移酶3级升高,研究者认为这与他汀类药物治疗相关。在单剂量阶段,Inclisiran剂量超过300mg就可以引起PCSK9水平降低(最小二乘平均值从基线到84天减少了74.5%),以及剂量超过100mg就可降低LDL胆固醇水平(最小二乘平均值从基线减少了50.6%)。在给予超过300mg剂量在180天,仍然可以减少PCSK9和LDL胆固醇水平。所有多剂量方案都能降低PCSK9(最小二乘平均值从基线到84天减少了83.8%)和LDL胆固醇(最小二乘平均值从基线到84天减少了59.7%)水平。
 
在这项1期试验中,运用Inclisiran没有观察到严重的不良反应。300mg或更大剂量(单次或多次剂量)能显著降低LDL胆固醇和PCSK9水平至少6个月。
 
原始出处:

 
Kevin Fitzgerald, et al. A Highly Durable RNAi Therapeutic Inhibitor of PCSK9. NEJM. November 13, 2016.DOI:10.1056/NEJMoa1609243.

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    2017-07-22 FukaiBao
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    2017-05-17 jklm09
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    2016-12-17 Tamikia
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    2016-12-27 geneandu

    期待更进一步的激动人心的结果,来证明RNAi成为药物的巨大前景。

    0

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    2017-03-04 yinxm8315