基础科学和病原发生学
Jiemin Yang1, Dongyu Wang2, Andy Rampersaud3
1Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
概括
对阿尔茨海默氏症疾病测序项目的全基因组分析数据确定了与较低的记忆得分相关的GOLPH3附近的遗传变异. 在TOMM40中罕见的变体也显示了与认知功能的联系.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 生物信息学是一种生物信息学.
背景情况:
- 阿尔茨海默病测序项目表型协调联盟 (ADSP-PHC) 提供了来自12项研究的协调认知数据.
- 全基因组测序 (WGS) 数据使得阿尔茨海默病 (AD) 相关的内分类型的基因组分析成为可能.
研究的目的:
- 通过全基因组分析来确定影响认知功能的遗传因素.
- 调查常见和罕见变异与基线记忆得分的关联.
主要方法:
- 选择了9698名ADSP参与者,其中有轻度认知障碍或正常认知和WGS数据.
- 对常见变体进行全基因组关联研究 (GWAS),对罕见变体使用STAARpipeline.
- 应用了三个模型来考虑研究异质性,并根据包括APOE状态在内的共变量进行了调整.
主要成果:
- 通过考虑研究异质性来减少基因组膨胀因子 (λ),Model_3实现了λ=1.01.
- 在所有模型中,APOE状态始终与基线记忆得分相关.
- 在GOLPH3附近的一种常见变体 (rs36110370) 显示出与较低的记忆分数 (p < 3x10-8) 有一致的关联.
- 在TOMM40中罕见的非编码变体与基线记忆得分相关.
结论:
- 建模研究的特定差异有效地解决了协调的记忆得分中的残余结构.
- 变体rs36110370显示出与记忆的一致关联,尽管并不总是全基因组显著.
- 目前正在进行的分析将检查ADSP PHC的语言和执行功能得分.
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