ArticleEuropean journal of human genetics : EJHG2025
Frequency of FGF14 intronic GAA repeat expansion in patients with multiple system atrophy and undiagnosed ataxia in the Japanese population.
Article in European journal of human genetics : EJHG, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.
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Who cites it
8 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Clinical and Genetic Characteristics of SCA27B: A Global Systematic Review and Meta-Analysis.Cerebellum (London, England) · 2026Pooled it
- Spinocerebellar ataxia 27B (SCA27B)-a systematic review and a case report of a Polish family.Journal of applied genetics · 2025Pooled it
- Optimized Cas9-Enriched Nanopore Sequencing and Analysis Workflow for Clinical Diagnosis of Repeat Expansion Disorders.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- SCA27B in Brazil: frequency, phenotype and genotype-phenotype correlations.Journal of neurology · 2026Article
- Long-read sequencing identifies FGF14 repeat expansions in Parkinson's disease.Brain : a journal of neurology · 2026Article
- Unstable FGF14 GAA repeat expansions in Indian ataxia patients: a broader phenotype and involvement of modifier loci?Journal of human genetics · 2025Article
- GAA-FGF14 Expansions and CACNA1A Variants: Phenotypic Overlap and Diagnostic Implications.Movement disorders : official journal of the Movement Disorder Society · 2025Article
- Spring in EJHG.European journal of human genetics : EJHG · 2025Article
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Authors and funding
11 authors.
Funding
Abstract
Multiple system atrophy (MSA) is a neurodegenerative disorder characterized by autonomic nervous system dysfunction and cerebellar ataxia or parkinsonism. Recently, expanded GAA repeats (≥250 repeat units) in intron 1 of FGF14 have been shown to be responsible for spinocerebellar ataxia type 27B (SCA27B), a late-onset ataxia with an autosomal dominant inheritance. Patients with SCA27B may also exhibit autonomic nervous system dysfunction, potentially overlapping with the clinical presentations of MSA patients. In this study, to explore the possible involvement of expanded GAA repeats in MSA, we investigated the frequencies of expanded GAA repeats in FGF14 in 548 patients with MSA, 476 patients with undiagnosed ataxia, and 455 healthy individuals. To fully characterize the structures of the expanded GAA repeats, long-range PCR products suggesting the expansion of GAA repeats were further analyzed using a long-read sequencer. Of the 548 Japanese MSA patients, we identified one MSA patient (0.2%) carrying an expanded repeat with (GAA)
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