A Review of Spinocerebellar Ataxias in Taiwan

Spinocerebellar ataxias (SCAs) are a group of neurodegenerative diseases characterized by inherited progressive cerebellar ataxia with or without other associated features. The clinical presentations of these affected SCA patients are very heterogeneous. Genetic testing has been performed in the Tai...

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Main Authors: Chia-Ju Lee, Chin-San Liu, Society for Neurological Rare Disorders-Taiwan
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2025-04-01
Series:Acta Neurologica Taiwanica
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Online Access:https://journals.lww.com/10.4103/ANT.ANT_113_0057
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author Chia-Ju Lee
Chin-San Liu
Society for Neurological Rare Disorders-Taiwan
author_facet Chia-Ju Lee
Chin-San Liu
Society for Neurological Rare Disorders-Taiwan
author_sort Chia-Ju Lee
collection DOAJ
description Spinocerebellar ataxias (SCAs) are a group of neurodegenerative diseases characterized by inherited progressive cerebellar ataxia with or without other associated features. The clinical presentations of these affected SCA patients are very heterogeneous. Genetic testing has been performed in the Taiwanese population to determine the prevalence of SCAs in Taiwan. In general, the diseases can be classified as those caused by tandem repeats and those with conventional mutations. Among the SCAs caused by tandem repeats, polyglutamine SCAs, including SCA1, SCA2, SCA3, SCA6, SCA7, and SCA17, are prevalent in Taiwan and worldwide. Other SCAs caused by non-CAG tandem repeats that have been investigated in Taiwan include SCA8, SCA12, SCA31, and SCA36. However, SCA12 and SCA31 seem either rare or absent in the Taiwanese population. On the other hand, there are SCAs caused by point mutations, duplications, insertions, and deletions. Taiwanese cases with SCAs related to ITPR1 gene mutations, SCA19/22, SCA28, SCA35, SCA47, and SCA48 have been studied and published. To generate a whole picture of SCAs in Taiwan, in this review, we summarized the prevalence of SCAs and described the characteristics of less common types of SCAs in Taiwanese patients.
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spelling doaj-art-fdcde4f8bf494a389cc8bf0c0a7f85fe2025-08-20T02:43:54ZengWolters Kluwer Medknow PublicationsActa Neurologica Taiwanica1028-768X2025-04-01342556310.4103/ANT.ANT_113_0057A Review of Spinocerebellar Ataxias in TaiwanChia-Ju LeeChin-San LiuSociety for Neurological Rare Disorders-TaiwanSpinocerebellar ataxias (SCAs) are a group of neurodegenerative diseases characterized by inherited progressive cerebellar ataxia with or without other associated features. The clinical presentations of these affected SCA patients are very heterogeneous. Genetic testing has been performed in the Taiwanese population to determine the prevalence of SCAs in Taiwan. In general, the diseases can be classified as those caused by tandem repeats and those with conventional mutations. Among the SCAs caused by tandem repeats, polyglutamine SCAs, including SCA1, SCA2, SCA3, SCA6, SCA7, and SCA17, are prevalent in Taiwan and worldwide. Other SCAs caused by non-CAG tandem repeats that have been investigated in Taiwan include SCA8, SCA12, SCA31, and SCA36. However, SCA12 and SCA31 seem either rare or absent in the Taiwanese population. On the other hand, there are SCAs caused by point mutations, duplications, insertions, and deletions. Taiwanese cases with SCAs related to ITPR1 gene mutations, SCA19/22, SCA28, SCA35, SCA47, and SCA48 have been studied and published. To generate a whole picture of SCAs in Taiwan, in this review, we summarized the prevalence of SCAs and described the characteristics of less common types of SCAs in Taiwanese patients.https://journals.lww.com/10.4103/ANT.ANT_113_0057autosomal dominant cerebellar ataxiasgenotype-phenotypespinocerebellar ataxia
spellingShingle Chia-Ju Lee
Chin-San Liu
Society for Neurological Rare Disorders-Taiwan
A Review of Spinocerebellar Ataxias in Taiwan
Acta Neurologica Taiwanica
autosomal dominant cerebellar ataxias
genotype-phenotype
spinocerebellar ataxia
title A Review of Spinocerebellar Ataxias in Taiwan
title_full A Review of Spinocerebellar Ataxias in Taiwan
title_fullStr A Review of Spinocerebellar Ataxias in Taiwan
title_full_unstemmed A Review of Spinocerebellar Ataxias in Taiwan
title_short A Review of Spinocerebellar Ataxias in Taiwan
title_sort review of spinocerebellar ataxias in taiwan
topic autosomal dominant cerebellar ataxias
genotype-phenotype
spinocerebellar ataxia
url https://journals.lww.com/10.4103/ANT.ANT_113_0057
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