非洲裔美国人患2型糖尿病的多基因风险
Marguerite R Irvin1, Tian Ge2,3,4,5, Amit Patki6
1Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, AL.
Diabetes
|March 12, 2024
概括
针对2型糖尿病 (T2D) 的新型多基因风险评分 (PRS) 被开发并优化为非洲裔美国人 (AAs). 这种PRSAA证明了在AA群体中对T2D风险的显著预测.
科学领域:
- 遗传学 遗传学 是一个
- 流行病学 流行病学
- 精准医学是一门精准的医学.
背景情况:
- 非洲裔美国人 (AAs) 在多基因风险评分 (PRS) 研究中代表性不足.
- 2型糖尿病 (T2D) 不成比例地影响AA人群,突出了针对风险预测工具的需求.
研究的目的:
- 开发和验证一个以AA为重点的T2D PRS (PRSAA),使用大量非洲裔美国人的数据集.
- 在独立的AA队列中,与现有的T2D PRS相比,评估PRSAA的性能.
主要方法:
- 从多个观察性研究 (N=101,987 AAs) 中整合了全基因组数据,以使用贝叶斯多基因建模训练PRSAA.
- 在三项独立研究中测试了PRSAA (N=7,275 AAs),并将其预测性能与其他T2D PRS进行了比较.
主要成果:
- 在测试队列中,PRSAA的1-SD增加与T2D的几率增加40-60%有关 (ORs从1.40到1.60不等).
- PRSAA捕获了T2D负债差异的1.0-2.6%,在最高值时,积极的预测值在14-35%之间.
- 在研究的AA群体中,PRSAA的表现与现有的T2D PRS可比.
结论:
- 开发的PRSAA在预测非洲裔美国人中T2D风险方面具有实用性.
- 需要对更大的数据集进行进一步的研究,以充分评估和完善AAs的祖先内部PRS.
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