Cited by 257Genomics and Rare DiseasesAdrenal Hormones and DisordersMetabolism and Genetic Disorders

Triple A syndrome is caused by mutations in AAAS, a new WD-repeat protein gene

Handschug, K.·2001·Human Molecular Genetics

Abstract

The triple A syndrome (MIM 231550) is a rare autosomal recessive disorder characterized by adrenal insufficiency, achalasia and alacrima. The frequent association with a variety of neurological features may result in a severely disabling disease. We previously mapped the syndrome to a 6 cM interval on chromosome 12q13 and have now refined the critical region to 0 cM between KRT8 and D12S1651. Overlapping bacterial artificial chromosome (BAC) sequences of a high resolution BAC/P1-derived artificial chromosome (PAC) contig were screened for gene content and a novel gene encoding a 546 amino acid polypeptide was identified. In nine triple A syndrome patients eight different homozygous and compound heterozygous mutations were found in this gene, most of them leading to a truncated protein suggesting loss of function. RNA blotting experiments revealed marked expression in neuroendocrine and gastrointestinal structures, which are predominantly affected in triple A syndrome, supporting the hypothesis that mutations in this triple A syndrome gene (AAAS) are responsible for the disease. The predicted protein belongs to the family of WD repeat-containing proteins which exhibit a high degree of functional diversity including regulation of signal transduction, RNA processing and transcription.

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Crossref · 10.1093/hmg/10.3.283

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Authors
Handschug, K.
Affiliations
Technische Universität Dresden (DE)
Corresponding author
Handschug, K.
Venue
Human Molecular Genetics
Published
2001-02-01
Volume
10
Issue
3
Pages
283-290
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2138449464
Cited by
257
References
30
Citations by year
2026: 7 · 2025: 7 · 2024: 5 · 2023: 15 · 2022: 9 · 2021: 18 · 2020: 9 · 2019: 8 · 2018: 10 · 2017: 12 · 2016: 10 · 2015: 13 · 2014: 6 · 2013: 9 · 2012: 8
FWCI
7.46
Type
journal article
Language
en
Open access
closed
Locations
  • Human Molecular Genetics (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
Keywords
triple A syndrome, AAAS gene, WD-repeat proteins, autosomal recessive disorder, adrenal insufficiency, achalasia, alacrima, chromosome 12q13, gene mapping, homozygous mutation, compound heterozygosity, loss-of-function mutations, gene identification
MeSH terms
Abnormalities, Multiple, Adrenal Insufficiency, Amino Acid Sequence, Base Sequence, Chromosomes, Human, Pair 12, DNA, DNA Mutational Analysis, Esophageal Achalasia, Family Health, Female, Humans, Lacrimal Apparatus, Male, Molecular Sequence Data, Mutation, Pedigree, Repetitive Sequences, Nucleic Acid, Syndrome, Polymorphism, Single-Stranded Conformational, Microsatellite Repeats, Genetic Predisposition to Disease

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