路径特定的多基因风险得分与临床状态和与阿尔茨海默病相关的生物标志物相关
Nicholas J Schork1,2, Jeremy A Elman2,3,
1The Translational Genomics Research Institute, Quantitative Medicine and Systems Biology, Phoenix, AZ, USA.
Journal of Alzheimer's disease : JAD
|September 4, 2023
概括
多基因风险评分 (PRS) 揭示了特定的阿尔茨海默病 (AD) 途径,但全球PRS更好地预测了诊断和生物标志物. 了解特定途径的遗传风险,可以澄清疾病的异质性.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 生物标志物 生物标志物
背景情况:
- APOE是阿尔茨海默病 (AD) 的主要遗传风险因素,但多基因因素也起着重要作用.
- 多基因风险评分 (PRS) 总结了遗传影响,但可能掩盖了对AD异质性的特定途径贡献.
研究的目的:
- 在特定的AD相关途径中调查多基因风险.
- 为了将特定途径的PRS与临床状态和粉样蛋白,蛋白和神经退行 (A/T/N) 生物标志物相关联.
主要方法:
- 分析了来自1411名阿尔茨海默病神经成像计划 (ADNI) 参与者的数据.
- 使用途径分析和集群识别了与AD相关的途径集群.
- 构建了特定途径的PRS (不包括APOE) 和与诊断的测试关联,A/T/N生物标志物和海马体积.
主要成果:
- 确定了13个路径集群;与AD诊断相关的8个路径特定的PRS.
- 粉样蛋白阳性与内细胞分裂,纤维细胞形成和蛋白质氨酸调节PRS相关.
- 阳性和海马体积与蛋白质局部化,线粒和免疫信号PRS相关.
结论:
- 路径特定的PRS提供了对不同的AD流程的洞察力,但与全球PRS相比,缺乏预测能力.
- 研究结果表明,阿尔茨海默病的表型与特定途径风险相关,澄清了病因异质性.
- 路径特定的PRS划分可以应用于其他复杂疾病.
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