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Clinical aspects of hemochromatosis

Jillian O'Neil1, Lawrie Powell

  • 1Department of Gastroenterology and Hepatology, The Royal Brisbane and Women's Hospital and the Queensland Institute of Medical Research, Australia.

Seminars in Liver Disease
|November 30, 2005
PubMed

Insights

Hemochromatosis, or genetic iron overload, is increasingly detected early through screening. Early phlebotomy treatment can lead to normal life expectancy, preventing severe complications like cirrhosis.

Area of Science:

  • Genetics
  • Hepatology
  • Internal Medicine

Background:

  • Hemochromatosis is often equated with HFE-associated genetic iron overload.
  • Rarer causes of a similar syndrome have been identified.
  • Common symptoms include lethargy and joint pain, with severe complications like cirrhosis, diabetes, and cardiac issues.

Purpose of the Study:

  • To review the current understanding of hemochromatosis, including its genetic basis, clinical presentation, and management.
  • To highlight the impact of early detection through screening programs.
  • To discuss the prevalence and spectrum of disease expression in affected individuals.

Main Methods:

  • Review of screening studies and genetic data related to hemochromatosis.
  • Analysis of clinical and biochemical expression in different populations.
  • Examination of genetic modifiers and treatment outcomes.

Main Results:

  • Approximately 75% of C282Y homozygous subjects show biochemical evidence of iron overload.
  • Hepatic iron overload affects 56% of men and 34% of women.
  • Prevalence of advanced fibrosis and cirrhosis is significantly higher in men than women, with rates of 18.7% and 5.8% respectively.

Conclusions:

  • Hemochromatosis is being diagnosed at earlier stages, often with only biochemical abnormalities.
  • Genetic factors beyond HFE, such as hepcidin and hemojuvelin mutations, can influence disease severity.
  • Timely phlebotomy before cirrhosis develops ensures a normal life expectancy.

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