冠状动脉心脏病的多祖先多基因风险评分,基于一个祖先多样化的全基因组协会研究和特定人群优化
Johanna L Smith1, Catherine Tcheandjieu2,3,4, Ozan Dikilitas1
1Department of Cardiovascular Medicine (J.L.S., O.D., I.J.K.), Mayo Clinic, Rochester, MN.
Circulation. Genomic and precision medicine
|February 21, 2024
概括
冠心病 (CHD) 的多祖先多基因风险评分 (PRS) 在不同人群中显示出更好的表现. 需要对更大,代表性不足的数据集进行进一步的研究,以提高所有祖先的PRS准确性.
科学领域:
- 遗传学 遗传学 是一个
- 基因组医学是基因组医学.
- 人口健康 人口健康
背景情况:
- 对冠心病 (CHD) 的多基因风险评分 (PRS) 在不同全球人口中表现出可变的预测性表现.
- 为临床使用开发公平的PRS需要考虑遗传祖先变异.
研究的目的:
- 开发和评估冠心病 (CHD) 的祖先特异性和多祖先PRS.
- 为了比较不同基因祖先群体的不同PRS方法的预测性能.
主要方法:
- 通过修剪和值 (PRSPT) 和连续缩先验 (PRSCSx) 来获得CHD的祖先特异性和多祖先PRS.
- 利用来自大型多祖先全基因组关联研究元分析 (110万参与者) 的总结统计数据.
- 在百万退伍军人计划中训练并优化PRS,然后在9个不同的队伍中验证 (176,988人).
主要成果:
- 多祖先PRSPT和PRSCSx在各种调整参数中始终超过了祖先特定的PRS.
- 表现最好的多祖先PRS (PRSPTmult和PRSCSxmult) 在南亚,欧洲,东亚,西班牙裔/拉丁裔和非洲祖先中显示出显著的CHD关联.
- 在南亚和欧洲祖先的个体中,PRSPTmult显示出最强烈的CHD关联.
结论:
- 利用多祖先全基因组元分析总结统计数据,与单祖先方法相比,在大多数人群中提高了PRSCHD的性能.
- 预测性能的改进在非洲祖先的个体中是有限的,这强调了需要更大,更多样化的基因组数据集的需要.
- 在全基因组关联研究中增加代表性对于改善PRSCHD在所有人群中的公平性和准确性至关重要.
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