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Related Experiment Videos

Phenotypic heterogeneity in AAAS gene mutation.

P Barat1, C Goizet, A Tullio-Pelet

  • 1Department of Paediatrics, Hôpital Pellegrin-Enfants, Bordeaux, France. baratp@club-internet.fr

Acta Paediatrica (Oslo, Norway : 1992)
|September 24, 2004
PubMed
Summary

Triple A syndrome (AAAS gene mutation) presents with varied symptoms, even within families. One sibling had acute adrenal insufficiency and intellectual disability, while the other showed achalasia and chronic adrenal failure.

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Area of Science:

  • Genetics
  • Endocrinology
  • Pediatrics

Background:

  • Triple A syndrome, caused by mutations in the AAAS gene, is a rare disorder.
  • It is characterized by the triad of achalasia, alacrima, and adrenal insufficiency.
  • Phenotypic variability is known, but intra-familial heterogeneity warrants further investigation.

Observation:

  • Two siblings of North African origin with a confirmed AAAS gene mutation were studied.
  • The 8-year-old brother presented with acute adrenal insufficiency and mental retardation.
  • The 6-year-old sister's diagnosis was suggested by her history of symptomatic achalasia and chronic adrenal failure.

Findings:

  • The study highlights significant phenotypic heterogeneity in Triple A syndrome.
  • Variable intra-familial expression of AAAS gene mutations was observed.

Related Experiment Videos

  • The presentation ranged from acute adrenal crisis with cognitive impairment to chronic adrenal insufficiency with esophageal dysfunction.
  • Implications:

    • These cases underscore the importance of considering AAAS gene mutations in patients with adrenal insufficiency and neurological or gastrointestinal symptoms.
    • Recognizing the spectrum of clinical manifestations is crucial for timely diagnosis and management.
    • Further research into genotype-phenotype correlations in Triple A syndrome is needed to understand the basis of this variability.