Cited by 23Metabolism and Genetic DisordersLysosomal Storage Disorders ResearchHereditary Neurological Disorders

Eight novel ABCD1 gene mutations and three polymorphisms in patients with X-linked adrenoleukodystrophy: The first polymorphism causing an amino acid exchange

Dvoráková, L., Štorkánová, G., Unterrainer, G., Hujová, J., Kmoch, S., Zeman, J., Hrebícek, M., Berger, J.·2001·Human Mutation

Abstract

X-ALD is a neurological disorder associated with inherited defects in the ABCD1 (ALD) gene located on Xq28 and with impaired peroxisomal very long-chain fatty acid beta-oxidation. We examined the ABCD1 gene in probands from 11 unrelated X-ALD Czech and Slovak families by the direct sequencing of cDNA or genomic PCR products. In 10 families there were 10 different mutations, eight of which were novel. The spectrum of mutations consists of six point mutations, three microdeletions (1bp, 2bp, 4 bp), and one large deletion (229bp). In the 11th family we detected two novel single-base pair substitutions in exon 1 (c.38 A>C and c.649 A>G), both causing amino acid exchanges (N13T and K217E). Expression studies revealed that only K217E is a deleterious mutation, because a plasmid encoding ALDP with K217E was ineffective in the restoration of defective beta-oxidation in X-ALD fibroblasts. The N13T amino acid exchange, on the other hand, did not affect ALDP function. Thus, N13T represents the first polymorphism causing an amino acid exchange in the ABCD1 gene. As this polymorphism was observed neither in 100 control alleles nor in 300 X-ALD patients who have been sequenced so far world-wide, it seems to be very rare or unique. Two additional novel polymorphisms were found by the sequencing of the ABCD1 gene from our patients: c.-59 C/T in the 5'untranslated region and c.2019 C/T (F673F) in exon 10. The frequencies of these two polymorphisms, were 11/150 and 2/150 control alleles, respectively.

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Crossref · 10.1002/humu.1149

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Authors
Dvoráková, L., Štorkánová, G., Unterrainer, G., Hujová, J., Kmoch, S., Zeman, J., Hrebícek, M., & Berger, J.
Affiliations
  • University of Vienna (AT)
  • General University Hospital in Prague (CZ)
Venue
Human Mutation
Published
2001-07
Volume
18
Issue
1
Pages
52-60
ISSN
  • 1059-7794 (ISSN-L)
  • 1098-1004
OpenAlex
W2034204538
Cited by
23
References
41
Citations by year
2022: 2 · 2019: 1 · 2016: 2 · 2015: 1 · 2014: 1 · 2013: 1 · 2012: 3
FWCI
0.55
Type
journal article
Language
en
Open access
closed
Locations
  • Human Mutation (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Health Sciences › Medicine › Physiology › Lysosomal Storage Disorders Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
Keywords
X-linked adrenoleukodystrophy, ABCD1 gene, novel mutations, microdeletion, point mutations, amino acid substitutions, 5' untranslated region polymorphism, mutation spectrum
MeSH terms
ATP Binding Cassette Transporter, Subfamily D, Member 1, Adolescent, Adrenoleukodystrophy, Adult, Alleles, Child, DNA Mutational Analysis, Exons, Fatty Acids, Female, Humans, Genetic Linkage, Male, Membrane Proteins, Molecular Sequence Data, Oxidation-Reduction, Phenotype, Polymorphism, Genetic, X Chromosome, Conserved Sequence, Czech Republic, Slovakia, ATP-Binding Cassette Transporters, Palmitic Acid, 5' Untranslated Regions, Mutation, Missense, Polymorphism, Single Nucleotide, Amino Acid Motifs

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