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多基因关联与跨TDP-43蛋白质病变的临床和神经病理特征异质性

Barbara E Spencer¹, David J Irwin¹, Vivianna M Van Deerlin²

¹Department of Neurology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America.

|December 30, 2025

概括

遗传因素影响各种TDP-43蛋白病变,如ALS和FTLD-TDP. 多基因风险评分揭示了神经肌肉或认知障碍和TDP-43蛋白负担的特定遗传贡献.

科学领域:

神经遗传学神经遗传学
分子神经学分子神经学
基因组医学是基因组医学.

背景情况:

包括ALS和FTLD-TDP在内的TDP-43蛋白病变具有不同的临床和神经病理特征.
共享的遗传风险存在,但个体特征修饰者仍然不清楚.
了解基因异质性对于TDP-43蛋白质病变研究至关重要.

研究的目的:

在TDP-43蛋白质病变中识别多基因对特征异质性的贡献.
研究遗传变异如何影响特定的临床和神经病理结果.
探索不同TDP-43相关的神经退行性疾病之间的遗传风险重叠.

主要方法:

对ALS,FTLD-TDP和HS-Aging的GWAS总结统计数据的加权相关性分析.
对已识别的SNP集群进行基因本体学丰富分析.
在一个独立的队列中 (n=260) 导出和评估集群特定的多基因分数.

主要成果:

确定了5个不同的SNP集群,包括表型特异和重叠集群 (ALS-FTLD,FTLD-HS).
路径分析揭示了生物相关的,表型特定的过程.
与个别临床特征 (神经肌肉,认知行为) 和TDP-43负担相关的ALS和FTLD-TDP多基因风险评分.

结论:

多基因因素改变了TDP-43蛋白质病变中的临床和神经病理特征.
这些遗传修饰剂有助于疾病表现的个体差异,包括ALS或FTLD的可能性.
这项研究突出了TDP-43蛋白质病变背后的复杂遗传结构.

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