基因组第一方法用于罕见和常见的胸前大动脉动脉瘤和剖析风险变体
John DePaolo1, Diane T Smelser2, Dongchuan Guo3
1Department of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
medRxiv : the preprint server for health sciences
|June 6, 2025
概括
遗传性胸前大动脉动脉瘤和剖析 (HTAAD) 基因中的罕见病原体变异在一般人群中显著增加TAAD风险. 多基因风险得分可能会改变这种风险,表明对TAAD的复杂遗传贡献.
科学领域:
- 遗传学 遗传学 是一个
- 心血管疾病 心血管疾病
- 基因组学就是基因组学.
背景情况:
- 胸前大动脉动脉瘤和解剖 (TAAD) 构成严重的健康风险.
- 已知有11个基因导致遗传性TAAD (HTAAD),但如果没有强烈的家族史,测试是有限的.
- 与HTAAD基因罕见变异相关的患病率和风险,以及常见遗传变异的影响在很大程度上是未知的.
研究的目的:
- 在一般人群中确定HTAAD基因中致病或可能致病 (P/LP) 变异的流行率.
- 评估P/LP HTAAD变体与TAAD风险之间的关联.
- 调查一下大动脉直径的多基因风险得分是否会改变罕见的HTAAD变体所带来的风险.
主要方法:
- 利用了来自宾夕法尼亚大学医学生物库 (PMBB) 和MyCode参与者的数据,将电子健康记录与生物样本数据联系起来.
- 根据ACMG标准进行裁决的P/LP HTAAD基因变异.
- 采用后勤回归来确定与P/LP变体相关的TAAD风险,并分析了上升性大动脉直径多基因风险评分 (AscAoD PRS) 对罕见变体透率的修饰作用.
主要成果:
- 0.2-0.3%的参与者携带P/LP HTAAD基因变异.
- 携带P/LP HTAAD变体与TAAD诊断风险增加13.5倍有关.
- 增加的AscAoD PRS与更高的TAAD风险有关,这种多基因风险似乎改变了罕见的HTAAD变异的透率.
结论:
- 在一般人群中,P/LP HTAAD基因变异显著增加TAAD风险.
- 通过AscAoD PRS评估的多基因风险可能是TAAD罕见变异风险的关键修饰因素.
- 这些发现强调了在TAAD风险评估中考虑罕见和常见遗传变异的重要性.
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