Circulation:遗传风险评分可预测动脉粥样硬化患者从evolocumab治疗中的获益

2020-03-01 QQY MedSci原创

基因风险评分预测已知心血管疾病风险的能力,以及识别从PCSK9抑制中获益更大的个体的能力尚未得到证实。研究人员对FOURIER试验(评估PCSK9抑制剂用于高风险个体的心血管预后)中的14 298位动脉粥样硬化心血管疾病患者进行研究。27个单核苷酸多态性遗传风险评分定义为低(1分)、中(2-4分)和高(5分)遗传风险。还根据主要动脉粥样硬化危险因素(包括糖尿病、高血压、低密度脂蛋白胆固醇≥100

基因风险评分预测已知心血管疾病风险的能力,以及识别从PCSK9抑制中获益更大的个体的能力尚未得到证实。

研究人员对FOURIER试验(评估PCSK9抑制剂用于高风险个体的心血管预后)中的14 298位动脉粥样硬化心血管疾病患者进行研究。27个单核苷酸多态性遗传风险评分定义为低(1分)、中(2-4分)和高(5分)遗传风险。还根据主要动脉粥样硬化危险因素(包括糖尿病高血压、低密度脂蛋白胆固醇≥100 mg/dl和吸烟)对患者进行分类;多重(≥2)危险因素被认为是临床高危风险。预后评估包括主要冠脉事件(冠心病死亡、心肌梗死或冠脉搭桥)和大血管事件(大冠脉事件和缺血性卒中)。中位随访2.3年。

根据临床因素校正后,基因风险评分与大血管事件和大冠脉事件均相关。中、高基因风险评分的个体大冠脉事件的风险分别增加1.23倍和1.65倍。基因风险升高独立于主要动脉粥样硬化风险因素,可鉴别更可能从Evolocumab治疗获益的个体。无多重临床风险或高基因风险的个体采用evolocumab干预不能降低其大血管事件(HR 1.02;绝对风险降低[ARR] -0.2%,p=0.86)。相反,有多重临床风险因素但无高基因风险的个体的相对风险降低了13%,ARR降低了1.4%;有高基因风险的个体的相对风险降低了31%,ARR降低了4.0%。采用evolocumab干预的高基因风险个体与低遗传和临床风险负担个体的事件发生率相似。

无多重临床风险因素或高遗传风险的患者心血管事件发生率较低,且在2.3年里似乎不能从evolocumab干预中获益。相反,有多重临床危险因素但没有高遗传风险的患者有中度风险,且经evolocumab干预后,其风险有中等程度的降低。无论临床风险如何,高遗传风险患者的心血管事件发生率较高,evolocumab干预的相对和绝对获益最大。

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    2020-10-20 snf701207
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