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Geographic variations in Wilson's disease

N S Chu1, T P Hung

  • 1Department of Neurology Chang Gung Memorial Hospital, Taipei, Taiwan.

Journal of the Neurological Sciences
|July 1, 1993
PubMed
Summary
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Wilson's disease (WD) in Asia presents unique features, including a higher prevalence in Japan possibly due to consanguinity. Treatments like Trien and oral zinc offer effective alternatives to penicillamine for managing WD in Asian populations.

Area of Science:

  • Hepatology
  • Genetics
  • Neurology

Background:

  • Wilson's disease (WD) exhibits distinct clinical and genetic characteristics in Asian populations compared to other continents.
  • A higher prevalence in Japan may be linked to increased consanguinity rates.
  • Genetic linkage studies in Chinese populations reveal a tight association between WD and loci on chromosome 13.

Purpose of the Study:

  • To delineate the specific epidemiological, clinical, and genetic features of Wilson's disease in Asia.
  • To explore the potential protective role of hepatic copper accumulation against certain liver conditions.
  • To evaluate the efficacy and safety of different therapeutic strategies for Wilson's disease management in the Asian context.

Main Methods:

  • Comparative analysis of clinical presentations and genetic data from Asian WD patients.

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  • Review of existing literature on Wilson's disease prevalence, genetics, and clinical manifestations in Asia.
  • Assessment of treatment outcomes for penicillamine, Trien, and oral zinc therapy.

    • Main Results:

    • Hepatic presentation is common, leading to earlier onset in Japanese and Chinese patients.
    • Skeletal issues, hyperpigmentation, neurological disturbances, and specific dermatological findings are more prevalent in Asian patients.
    • Excessive liver copper may confer protection against hepatocellular carcinoma and hepatitis B.
    • Penicillamine treatment frequently causes side effects, while Trien shows efficacy without adverse reactions.
    • Oral zinc emerges as a viable long-term treatment option, particularly for developing Asian countries.

    Conclusions:

    • Wilson's disease in Asia displays unique genetic and clinical phenotypes.
    • Novel therapeutic approaches like Trien and oral zinc are promising for managing WD, offering better tolerability and accessibility.
    • Further research into the Asia-specific aspects of WD is warranted to optimize patient care.