社区突然死亡的遗传负担 通过解剖和分子表型为精确的基因型相关性进行分子表型
Zian H Tseng1, James W Salazar2, Julianne Wojciak3
1Section of Cardiac Electrophysiology, Division of Cardiology, Department of Medicine, University of California-San Francisco, San Francisco, California, USA; Cardiovascular Genetics Center, University of California-San Francisco, San Francisco, California, USA.
JACC. Clinical electrophysiology
|December 21, 2024
概括
基因检测在2%的成年人突然死亡中发现了原因,这突显了尸检在确定遗传疾病负担方面的重要性. 这项研究表明,常规基因查可能对所有突然死亡都不有益.
科学领域:
- 心血管遗传学 心血管遗传学
- 法医病理学 法医病理学
- 基因组医学是基因组医学.
背景情况:
- 突发心脏病死亡 (SCD) 遗传研究往往忽略了现有心血管疾病的老年人.
- 遗传学研究主要集中在较年轻的SCD病例上,忽视了受影响人口的很大一部分.
研究的目的:
- 在未经选择的成年人群中调查导致突然死亡的遗传疾病的流行情况.
- 在突然死亡病例中,将精确的遗传发现与死后的表型相关联.
主要方法:
- 尸体解剖,组织学和毒理学被用来确定死因在疑似SCD病例 (年龄18-90).
- 对231个与突然死亡相关的基因进行了基因测试,基因型与表型相关,包括心肌分析.
- 对于具有高度可疑表型的病例,收集了家族病史.
主要成果:
- 在306例基因检测中,有14例 (4.6%) 具有致病性/可能致病性变体,对可识别的突然死亡遗传原因的修正收益率为2%.
- 遗传测试的产量与尸检确认的心脏病因 (2.5%) 和高度怀疑的表型 (2.7%) 相似.
- 一半的高度可疑病例报告了家庭病史或突然死亡.
结论:
- 在将基因型-表型一致性考虑后,在2%的突然死亡和2.5%的确诊SCD中确定了遗传原因.
- 这些发现不支持社区突然死亡的常规基因检测,特别是当尸检没有进行时.
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