风险评分轮盘:对多基因风险评分可靠性的警告故事
Diane Xue1, Elizabeth E Blue2,3,4, Alexis C Wood5
1Department of Genetics, University of Pennsylvania, Philadelphia, PA, USA.
Journal of Alzheimer's disease : JAD
|September 9, 2025
概括
对阿尔茨海默病 (AD) 的多基因风险评分 (PRS) 在不同模型中显示个体级别可靠性较低. 这种不一致性引发了人们对在临床干预中使用PRS进行AD风险评估的担忧.
科学领域:
- 遗传学 遗传学 是一个
- 神经退行性疾病 神经退行性疾病
- 生物统计学 生物统计学
背景情况:
- 对阿尔茨海默病 (AD) 的遗传风险预测对早期检测和干预具有重大前景.
- 然而,多基因风险评分 (PRS) 方法在个人层面的可靠性仍然被低估.
- 现有的研究往往侧重于人口水平的表现,忽视了个人风险分层的准确性.
研究的目的:
- 评估不同阿尔茨海默病 (AD) 多基因风险评分 (PRS) 模型在个人层面的可靠性.
- 在多种PRS方法中比较个别风险预测的一致性.
- 评估PRS可靠性的影响,以指导临床干预.
主要方法:
- 对比了四种不同的阿尔茨海默病 (AD) 多基因风险评分 (PRS) 模型.
- 利用了来自多民族动脉样硬化研究的6338名参与者的数据.
- 评估个体级风险估计的模型间可靠性,重点关注顶部和底部分数.
主要成果:
- 四个AD PRS模型表现出类似的人口级绩效指标.
- 尽管整体表现相似,但个体级风险评估的可靠性在所有模型中都很低.
- 即使在基因风险极端分数的个体中也观察到不一致性.
结论:
- 目前的AD PRS方法对于个体风险预测的可靠性较低.
- 这些发现挑战了PRS在指导阿尔茨海默病个性化干预中的下游应用.
- 需要进一步的研究来提高临床使用的PRS的准确性和一致性.
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