Cited by 3Hereditary Neurological DisordersMetabolism and Genetic DisordersGenetic Neurodegenerative Diseases

Investigating ABCD1 mutations in a Taiwanese cohort with hereditary spastic paraplegia phenotype

Hsu, Shao-Lun, Chen, Ying-Hao, Chou, Cheng-Ta, Chou, Ying-Tsen, Tsai, Yu-Shuen, Hsiao, Cheng-Tsung, Liao, Yi-Chu, Lee, Yi-Chung·2021·Parkinsonism & Related Disorders

Abstract

BACKGROUND Adrenoleukodystrophy (ALD) is an X-linked peroxisomal disorder caused by mutations in the ABCD1 gene. The clinical manifestations of ALD vary widely with some patients presenting with adrenomyeloneuropathy (AMN) that resembles the phenotype of hereditary spastic paraplegia (HSP). The aim of this study is to investigate the frequency, spectrum, and clinical features of ABCD1 mutations in Taiwanese patients with HSP phenotype. METHODS Mutational analysis of the ABCD1 gene was performed in 230 unrelated Taiwanese patients with clinically suspected HSP by targeted resequencing. Clinical, electrophysiological, and neuroimaging features of the patients carrying an ABCD1 pathogenic mutation were characterized. RESULTS Ten different ABCD1 mutations were identified in eleven patients, including two novel mutations (p.Q177Pfs*17 and p.Y357*) and eight ever reported in ALD cases of other ethnicities. All patients were male and exhibited slowly progressive spastic paraparesis with onset ages ranging from 21 to 50 years. Most of them had additional non-motor symptoms, including autonomic dysfunction in nine patients, sensory deficits in seven, premature baldness in seven, skin hyperpigmentation in five, psychiatric symptoms in one and cerebellar ataxia in one. Seven of the ten patients who ever received nerve conduction studies showed axonal polyneuropathy. Magnetic resonance imaging (MRI) revealed diffuse spinal cord atrophy in seven patients, cerebral white matter hyperintensity in one patient, and cerebellar involvement in one patient. CONCLUSIONS ABCD1 mutations account for 4.8% (11/230) of the cases with HSP phenotype in Taiwan. This study highlights the importance to consider ABCD1 mutations in patients with clinically suspected HSP of unknown genetic causes.

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Crossref · 10.1016/j.parkreldis.2021.10.006

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Authors
Hsu, S.-L., Chen, Y.-H., Chou, C.-T., Chou, Y.-T., Tsai, Y.-S., Hsiao, C.-T., Liao, Y.-C., & Lee, Y.-C.
Affiliations
  • National Yang Ming Chiao Tung University (TW)
  • Taichung Veterans General Hospital (TW)
  • Taipei Veterans General Hospital (TW)
Corresponding author
  • Liao, Yi-Chu
  • Lee, Yi-Chung
Venue
Parkinsonism & Related Disorders
Publisher
Elsevier BV
Published
2021-11
Volume
92
Pages
7-12
ISSN
1353-8020 (ISSN-L)
OpenAlex
W3205997769
Cited by
3
References
30
Citations by year
2026: 2 · 2022: 1
FWCI
0.10
Type
journal article
Language
en
Open access
closed
Locations
  • Parkinsonism & Related Disorders (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Genetic Neurodegenerative Diseases
Keywords
ABCD1 mutations, hereditary spastic paraplegia
MeSH terms
ATP Binding Cassette Transporter, Subfamily D, Member 1, Adrenoleukodystrophy, Adult, DNA Mutational Analysis, Female, Humans, Male, Middle Aged, Mutation, Phenotype, Taiwan, Cohort Studies, Spastic Paraplegia, Hereditary, Age of Onset, Asian People, Young Adult

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