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Deciphering Spastic Ataxia

delete2025-12-01
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PRE
AI
J
Joana Damásio *
M
Mariana Santos
S
Sara Costa
J
João Moura
A
Ana Sardoeira
C
Carolina Lemos
J
Jorge Oliveira
J
José Barros
J
Jorge Sequeiros
DOI:10.1212/NXG.0000000000200331delete
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摘要

摘要

En 中文
背景与目的:遗传性小脑共济失调(HCA)和遗传性痉挛性截瘫(HSP)是罕见神经疾病,常代表共享临床谱系的相反两端。痉挛性共济失调以小脑综合征与明显痉挛并存为特征,研究相对不足,且与较少的遗传病因相关。本研究旨在对大型HCA队列中的痉挛性共济失调进行临床和遗传特征表征,并与非痉挛性HCA进行比较。 方法:2017年启动前瞻性HCA队列,采用结构化标准化方案进行年度评估。痉挛性共济失调定义为在改良Ashworth量表上痉挛等级≥2时出现的共济失调。筛选符合标准的患者,对其临床和遗传数据进行分析,并与非痉挛性HCA患者进行比较。采用国际运动障碍学会遗传病命名法,对复合表型采用双前缀标记(如HSP/ATX代表痉挛性共济失调),但对MJD/SCA3或ARSACS等已有公认名称的疾病除外。 结果:在249例受试者(164个家系)中,56例(22.5%,来自46个家系)表现出痉挛性共济失调表型。与非痉挛性HCA相比,这些患者发病年龄更早、病程更长。痉挛性共济失调与常染色体隐性遗传及非重复扩展型变异显著相关。38例先证者(80.8%)获得明确遗传诊断,涉及22个致病基因。最常见的诊断包括ARSACS(17.4%)、ATX-SYNE1(6.5%)、ATX-ANO10、HSP/ATX-KIF1C、HSP/ATX-PGN、HSP-ZFYVE26、MxMD-ATP13A2和ATX/HSP-KCNA2(各4.3%)。30例痉挛性共济失调患者(53.6%)表现为非小脑首发症状,26例(46.6%)为小脑首发。校正病程后,痉挛性共济失调患者在共济失调评估分级量表基线评分显著更高,反映更重的疾病负担。此外,该组跌倒发生率更高。 讨论:痉挛性共济失调是HCA中临床和遗传特征独特的亚组,以隐性遗传、巨大的遗传异质性和更严重的运动障碍为标志。提高对其异质性表现和随时间进展的残疾程度的认识,对于及时诊断、遗传咨询及制定个体化管理策略至关重要。
Keyword:
OF-FUNCTION MUTATIONS
CEREBELLAR-ATAXIA
PARAPLEGIA
FEATURES
DISEASE
SCALE

期刊

N
Neurology-Genetics
IF:
3.7
论文数:
54
被引数:
0

机构

U
universidade de aveiro
学者数:
1.3W
论文数: 1.4W
被引数: 24
U
universidade do porto
学者数:
4.3K
论文数: 1.7K
被引数: 4
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