MYH7 p. ((Arg1712Gln) 是一种致病的创始变体,导致过度缩性心肌病变,总体相对延迟发病
Luisa Marsili1,2, Freyja H M van Lint2,3, Francesco Russo4
1Clinique de génétique Guy Fontaine, CHU Lille, 59000, Lille, France.
概括
MYH7 p.(Arg1712Gln) 变异是一种病原性创始突变,与多变性心肌病 (HCM) 相关. 这种基因变异显示出疾病透的延迟,特别是在女性中,需要长期的临床监测.
科学领域:
- 心血管遗传学 心血管遗传学
- 人类遗传学 人类遗传学
- 分子心脏病学分子心脏病学
背景情况:
- MYH7 c.5135G>A p.(Arg1712Gln) 变异是一种已知的致病突变.
- 这种变种已在全球范围内确定,并列在ClinVar数据库中.
- 之前的研究还没有完全描述表型,也没有研究潜在的创始人效应.
研究的目的:
- 划分与MYH7 p.(Arg1712Gln) 变种相关的临床表型.
- 评估携带这种变种的个体中存在创始人效应的存在.
- 为受影响家庭提供临床管理和遗传咨询信息.
主要方法:
- 从国际队列中回顾性收集临床和遗传数据.
- 对22名受试者和74名家庭成员的分析.
- 在35名患者中复原原型重建,以评估创始人效应.
主要成果:
- 53人携带MYH7 p. ((Arg1712Gln) 变种,其中72%被诊断为心肌缩症 (HCM).
- HCM呈现的情况从无症状到严重的心律失常变化,其中有一例是心脏突然死亡.
- 在一小部分患者中发现了创始人效应,并且在75岁时疾病的透已经完成,在女性中观察到较晚的发病.
结论:
- MYH7 p. ((Arg1712Gln) 是一种病原创始变体,与一致的HCM表型相关.
- 该变种表现出延迟的透性,特别是在女性中,这表明需要延长临床随访.
- 根据透率数据,可以根据年轻,健康的女性携带者调整查间隔.
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