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Hereditary hemochromatosis: gene discovery and its implications for population-based screening
W Burke1, E Thomson, M J Khoury
1Department of Medicine, University of Washington, Seattle 98105, USA. wburke@u.washington.edu
JAMA
|July 21, 1998
Summary
Genetic testing for hereditary hemochromatosis is not recommended for population screening due to uncertainties in HFE gene mutation prevalence and penetrance. Further research is needed to clarify genotype-phenotype correlations and ethical implications.
Area of Science:
- Medical Genetics
- Public Health
- Molecular Biology
Background:
- Hereditary hemochromatosis is a genetic disorder of iron overload.
- The candidate gene HFE is implicated in hemochromatosis.
- Current understanding of HFE mutation prevalence and penetrance is limited.
Framework:
- An expert panel convened by the CDC and NHGRI reviewed evidence on hemochromatosis genetics and testing implications.
- Consensus was achieved through group discussion and a year-long revision process.
- The panel comprised experts in epidemiology, genetics, hepatology, and public health.
Implementation:
- Genetic testing is not currently recommended for population-based screening of hereditary hemochromatosis.
- Concerns exist regarding stigmatization and discrimination associated with genetic screening.
- HFE mutation testing may aid in diagnosing symptomatic individuals but has limitations.
Implications:
- High priority is given to population-based research on HFE mutation prevalence and penetrance.
- Further research should investigate genotype-phenotype correlations and psychosocial outcomes.
- Clarifying these factors is crucial for guiding clinical practice and policy.
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