直接到达你的心脏的变种 - - 外基因组测序中的心脏遗传学二次发现
Kirsten Wenderholm1, Theresa Brunet1, Elisabeth Graf1
1Institute of Human Genetics, Klinikum rechts der Isar, School of Medicine and Health, Technical University of Munich, Germany.
Gene
|November 1, 2024
概括
大约1.4%的被查的人携带致病性心脏遗传变异,往往没有被注意到. 意识到这些从外体测序中得到的二次发现对于预防心脏突然死亡至关重要.
科学领域:
- 心血管遗传学 心血管遗传学
- 基因组医学是基因组医学.
- 临床诊断 临床诊断 临床诊断
背景情况:
- 外基组测序是基因诊断的一个关键工具,它还可以识别与主要诊断目的无关的二次发现.
- 通过外体序列测序发现的未被注意到的先天性心脏病由于可用的预防疗法而具有临床意义.
- 早期发现对心脏病的遗传倾向,可以减轻心脏病突然死亡的风险.
研究的目的:
- 分析外体数据以发现临床相关的心脏遗传学发现,包括二次发现.
- 识别与遗传性心脏病相关的致病或可能致病变体.
- 在一个大队伍中评估心脏遗传变异的频率和类型.
主要方法:
- 从9962个个体的外体数据中分析了心脏遗传发现.
- 基因是根据ACMG对二次发现的建议 (v.3.1) 进行选择的.
- 分析包括在ClinVar中过致病变体,并在相关基因中选功能丧失变体.
主要成果:
- 在1.4% (136/9962) 的个体中发现了致病或可能致病的变体.
- 最常受到影响的基因是低密度脂蛋白受体 (LDLR) 和蒂 (TTN).
- 鉴定出的大量变异是新的,如果仅对索引患者进行查,可能会错过二次发现.
结论:
- 至少有1-2%的人可能携带致病性心脏遗传变异.
- 遗传咨询师和临床医生必须认识到外体和基因组测序中的二次发现的重要性.
- 在测试之前,获得患者的知情同意来报告二次发现至关重要.
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