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
medRxiv : the preprint server for health sciences
|August 12, 2025
概括
多基因风险评分改变了TDP-43蛋白质病变的特征,如ALS和FTLD-TDP. 这些遗传因素影响特定的症状和疾病进展,解释了这些神经退行性疾病的个体差异.
科学领域:
- 神经遗传学 神经遗传学
- 神经病理学神经病理学
- 多基因风险评分 多基因风险评分
背景情况:
- 与TDP-43 (FTLD-TDP) 相关的TDP-43蛋白病变,包括肌缩性侧面硬化症 (ALS) 和前叶退行症,具有共同的遗传风险,但具有未知的特征修饰剂.
- 了解对特征异质性的遗传贡献对于神经退行性疾病的个性化医学至关重要.
研究的目的:
- 确定多基因对TDP-43蛋白质病变的临床和神经病理特征异质性的贡献.
- 研究遗传变异如何影响ALS和FTLD-TDP的特定疾病表现.
主要方法:
- 针对ALS,FTLD-TDP和老化性海马硬化症 (HS-Aging) 的GWAS总结统计数据的加权相关性分析.
- 基因本体学丰富分析和集群特定多基因分数的导出.
- 在260名FTLD-TDP/ALS患者队列中,对多基因评分与临床和神经病理特征的关联分析.
主要成果:
- 确定了5个单核酸多态 (SNPs) 的不同集群,包括表型特异和重叠集群.
- 路径分析揭示了生物学上有意义的,表型特异的遗传过程.
- 对ALS和FTLD-TDP的多基因风险评分与不同的临床特征 (神经肌肉与认知行为障碍) 和TDP-43负担有关.
结论:
- 多基因因素在TDP-43蛋白质病变中显著改变了临床和神经病理特征.
- 这些遗传修饰剂有助于疾病表现和进展的个体水平差异,包括发展FTLD或ALS的可能性.
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