GBA1变种的分类和基因型-表型关系:MDSGene系统审查
Malco Rossi1,2, Susen Schaake3, Tatiana Usnich3
1Servicio de Movimientos Anormales, Departamento de Neurología, Fleni, Buenos Aires, Argentina.
Movement disorders : official journal of the Movement Disorder Society
|February 10, 2025
概括
GBA1基因中的遗传变异与帕金森病 (PD) 和高氏病 (GD) 有关. 本综述详细介绍了GBA1变体对PD,帕金森症和GD在不同人群中的影响,从而增强了基因型-表型的理解.
科学领域:
- 遗传学和神经学 遗传学和神经学
- 运动障碍 运动障碍
- 罕见疾病 罕见疾病
背景情况:
- GBA1基因编码葡萄糖大脑酶,其变体与高氏病 (GD) 和帕金森病 (PD) 和帕金森症的风险增加有关.
- 了解GBA1变异的基因型-表型相关性对于诊断和管理这些疾病,特别是PD至关重要.
- 现有的文献缺乏对GBA1变异对不同神经疾病的影响的全面,种族多样化的概述.
研究的目的:
- 系统地审查和整合有关帕金森病 (PD),帕金森症和高氏病 (GD) 患者GBA1变异的数据.
- 提供一个全面的概述人口统计学,临床和遗传发现从一个大型的,种族多样化的患者队列.
- 阐明基因型-表型相关性,特别是关于PD,并确定关键的GBA1变异及其相关的临床表现.
主要方法:
- 对报告GBA1变异的出版物的系统文献综述 (MDSGene).
- 包括27,963名携带GBA1变异的患者的数据,其中包括13,342名患有PD或帕金森症的患者.
- 来自五大洲1082个出版物的人口,临床 (运动和非运动症状,认知衰退) 和遗传数据的分析.
主要成果:
- 鉴定出794个GBA1变异,其中"N409S"和"L483P"是最常见的致病变异,显示出种族偏好.
- 常见的编码风险变体包括"E365K"和"T408M",在白人人口中普遍存在.
- 新发现包括亚洲族裔在早期发病的PD中占主导地位,白人在晚期发病的PD中占主导地位. 在PD和帕金森症中,运动特征相似,但患有严重变异的PD患者有更多的并发症和非运动症状. 手术后的认知能力下降是常见的. 患有PD的GD患者通常具有"N409S"变体,并且对利沃多巴有反应.
结论:
- 这一综述显著提高了对GBA1变异载体中基因型-表型相关性的理解,特别是在帕金森病中.
- 特定的GBA1变异具有明显的种族分布和与PD,帕金森症和GD的临床关联.
- 这些发现突出了GBA1遗传,种族和疾病表现之间的复杂相互作用,为改善临床管理和研究铺平了道路.
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