有害临床变异的基于人口的透率
Iain S Forrest1,2,3,4, Kumardeep Chaudhary1,3,4,5, Ha My T Vy1,4
1The Charles Bronfman Institute for Personalized Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.
JAMA
|January 25, 2022
概括
人口研究表明,致病/丧失功能变体的疾病风险往往低且可变. 为了更好地解释变异和临床风险评估,需要对人口透率进行更多研究.
科学领域:
- 遗传学
- 人口健康
- 生物信息学
背景情况:
- 对基因变异的基于人群的评估对于了解疾病风险至关重要.
- 临床决策和风险分层依赖于精确的遗传风险评估.
- 评估与临床变异相关的疾病风险是必不可少的.
研究的目的:
- 评估与已知的疾病倾向基因临床变异相关的基于人口的疾病风险.
- 量化各种人群中致病/丧失功能变体的透率.
主要方法:
- 一项由英国生物银行和BioMe生物银行参与的队列研究.
- 分析链接的外体和电子健康记录数据.
- 具有和没有变异基因的个体之间的疾病流行风险差异 (RD) 的计算.
主要成果:
- 在5360种致病/丧失功能变体中,89%的风险差异 (RD) 达0.05.
- 致病变体的平均透率为6. 9%,而良性变体的平均透率为0. 85%.
- 即使在BRCA1和BRCA2等基因内,透率也存在显著差异,并且在晚期发病时受到年龄的影响.
结论:
- 在大型生物库群体中,病原性/功能丧失变体的估计透率通常低且可变.
- 需要对基于人群的透率进行进一步的研究,以改善变异解释.
- 更精细的透性理解将提高携带这些遗传变异的个体的临床评估.
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