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Related Experiment Videos

X-linked adrenoleukodystrophy: the Australasian experience

E P Kirk1, J M Fletcher, P Sharp

  • 1Department of Chemical Pathology, Women's and Children's Hospital, Adelaide, Australia.

American Journal of Medical Genetics
|April 29, 1998
PubMed
Summary

X-linked adrenoleukodystrophy (ALD) affects at least 1.6 per 100,000 in Australasia. Carrier testing for ALD is reliable, with combined methods detecting nearly all carriers.

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Area of Science:

  • Genetics
  • Metabolic Diseases
  • Neurology

Background:

  • X-linked adrenoleukodystrophy (ALD) is a rare genetic disorder.
  • Understanding the Australasian experience and carrier testing is crucial.

Purpose of the Study:

  • Review Australasian ALD cases (1981-1996).
  • Compare Australasian ALD phenotypes to global data.
  • Assess the reliability of ALD carrier testing.

Main Methods:

  • Retrospective review of medical records.
  • Analysis of diagnosed ALD cases in Australia and New Zealand.
  • Evaluation of plasma very long chain fatty acids (VLCFAs) and genetic linkage studies for carrier detection.

Main Results:

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  • Estimated ALD incidence in Australasia: at least 1.6 per 100,000.
  • Phenotype distribution: 51 cerebral ALD, 24 adrenomyeloneuropathy, 15 Addison's disease only, 5 asymptomatic.
  • Plasma VLCFA measurement detected 93% of carriers; combined methods improved detection.

    • Conclusions:

    • ALD presents with diverse phenotypes in Australasia.
    • The proportion of cerebral ALD diagnoses has decreased over time.
    • Combined diagnostic methods offer highly reliable carrier detection for ALD.