JACC:遗传在心肌致密化不全中扮演重要角色

2018-02-20 MedSci MedSci原创

心肌致密化不全(NCCM)的临床预后多样,从无症状到心衰、心律失常和心源性猝死。遗传因素在其中扮演着重要角色。本研究的目的旨在评估遗传因素、临床特征和临床表现在成年和儿童NCCM中的关联。本研究纳入了来自4个不同临床中心的327名NCCM患者,并将其分为三类:1、有遗传突变的,占32%(81个成年人和23名儿童);2、可能有遗传易感因素的,有家族史但没有突变的,占16%(45个成年人和8名儿童);

心肌致密化不全(NCCM)的临床预后多样,从无症状到心衰、心律失常和心源性猝死。遗传因素在其中扮演着重要角色。本研究的目的旨在评估遗传因素、临床特征和临床表现在成年和儿童NCCM中的关联。

本研究纳入了来自4个不同临床中心的327名NCCM患者,并将其分为三类:1、有遗传突变的,占32%(81个成年人和23名儿童);2、可能有遗传易感因素的,有家族史但没有突变的,占16%(45个成年人和8名儿童);3、散发的,既无家族史也无突变,占52%(149个成年人和21名儿童)。在NCCM的遗传突变中,MYH7、MYBPC3和 TTN的基因突变是最常见的(71%),与第2和3组的患者相比,有突变的患者发生左室收缩功能降低的风险更高(p = 0.024),突变在儿童患者中的发生率更高(p = 0.04),并且与心脏主要不良事件(MACE)的发生风险相关(p = 0.025)。成年患者散发的概率更高。此外,携带MYH7基因突变的患者发生MACE的风险更低(p = 0.03)。

研究结果显示,心肌致密化不全症是一种异质性较高的疾病,遗传在其中起到重要作用,区分遗传性NCCM和非遗传性NCCM对临床的治疗和预后有较大的帮助。

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    2018-05-01 hbwxf
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