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Hemochromatosis. More common than you think
1Department of Medicine, Memorial University of Newfoundland, St John's. markb@mun.ca
Insights
Hereditary hemochromatosis, a common genetic disorder causing iron overload, is underrecognized but treatable. Early diagnosis and phlebotomy can prevent organ damage, making family physicians aware of its symptoms crucial.
Area of Science:
- Genetics
- Internal Medicine
- Gastroenterology
Background:
- Hereditary hemochromatosis is the most common genetic disease in white populations.
- It is characterized by unregulated iron absorption leading to generalized iron overload.
- The condition is often underrecognized despite its high prevalence (1 in 200).
Purpose of the Study:
- To review current knowledge on the genetics of hereditary hemochromatosis.
- To summarize the presentation, diagnosis, and management of the disease.
- To emphasize the importance of early diagnosis for effective treatment.
Main Methods:
- Literature search of MEDLINE from January 1966 to June 2002.
- Review of relevant papers, including reviews, practice guidelines, and observational studies.
- Identification of limited randomized controlled trials, none focusing on primary therapy.
Main Results:
- Hereditary hemochromatosis causes iron overload, potentially impairing organs and leading to cirrhosis, diabetes, and cardiomyopathy.
- Symptoms are often nonspecific, with diagnosis aided by routine lab abnormalities, transferrin saturation, ferritin levels, and genotyping.
- Iron depletion therapy via phlebotomy is effective if initiated before organ damage occurs.
Conclusions:
- Family physicians must recognize hereditary hemochromatosis.
- Early diagnosis is key to effective treatment and management.
- Awareness can lead to timely intervention and improved patient outcomes.
Objective:
To review current knowledge of the genetics, presentation, diagnosis, and management of hereditary hemochromatosis.
Quality Of Evidence:
MEDLINE was searched from January 1966 to June 2002, and references of relevant papers were reviewed. Most articles were reviews, practice guidelines, or observational studies. Several randomized controlled trials were identified but none studied primary therapy for hemochromatosis.
Main Message:
Hemochromatosis, the most common genetic disease in white populations, has a prevalence of one in 200, yet is still underrecognized. This disease of unregulated iron absorption leads to generalized iron overload that can eventually impair organ systems and lead to cirrhosis, diabetes, and cardiomyopathy. Symptoms are often nonspecific and patients are identified by mild abnormalities in routine laboratory testing. Transferrin saturation, ferritin levels, and genotyping can often establish the diagnosis. Iron depletion therapy with phlebotomy is helpful if initiated before organ damage occurs.
Conclusion:
Family physicians should be aware that hemochromatosis can be treated effectively if diagnosed early.
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