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Publication Detail
The diagnosis of adrenal insufficiency in a patient with Allgrove syndrome and a novel mutation in the ALADIN gene.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Case Reports
  • Authors:
    Salehi M, Houlden H, Sheikh A, Poretsky L
  • Publication date:
    02/2005
  • Pagination:
    200, 205
  • Journal:
    Metabolism
  • Volume:
    54
  • Issue:
    2
  • Status:
    Published
  • Country:
    United States
  • Print ISSN:
    0026-0495
  • PII:
    S0026049504003312
  • Language:
    eng
  • Keywords:
    Adrenal Cortex Hormones, Adrenal Insufficiency, Adrenocorticotropic Hormone, Adult, Aldosterone, Blood Glucose, Blood Pressure, DNA, Dose-Response Relationship, Drug, Esophageal Achalasia, Female, Heterozygote, Humans, Hydrocortisone, Hypoglycemic Agents, Insulin, Lacrimal Apparatus Diseases, Mutation, Reverse Transcriptase Polymerase Chain Reaction, Syndrome
Abstract
Allgrove syndrome is a genetic disorder inherited in an autosomal recessive pattern and characterized by a triad of adrenal insufficiency, achalasia, and alacrima. The gene affected by the mutation in patients with Allgrove syndrome is termed either AAAS or ALADIN (alacrima/achalasia/adrenal insufficiency/neurologic disorder). Adrenal insufficiency in patients with this disorder may develop as late as the third decade of life. We describe a 24-year-old female with Allgrove syndrome, in whom initial testing with 250 microg corticotropin (ACTH) stimulation test performed on 3 occasions produced normal serum cortisol values and results of the 1-microg ACTH stimulation tests performed on 6 occasions were conflicting. Insulin-induced hypoglycemia produced a nadir serum glucose value of 36 mg/dL without adequate serum cortisol stimulation, confirming presence of adrenal insufficiency. Gene sequencing identified 2 mutations in the triple A gene: an IVSC14 + 1 G to A mutation, which has been previously reported, and a novel R155P exon 6 mutation. We conclude that a novel R155P mutation in the ALADIN gene is associated with Allgrove syndrome and that insulin-induced hypoglycemia, rather than ACTH stimulation tests, should be used for accurate diagnosis of adrenal insufficiency in this disorder.
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