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Iron and HFE or TfR1 mutations as comorbid factors for development and progression of chronic hepatitis C
Herbert L Bonkovsky1, Nicole Troy, Kristina McNeal
1Liver-Biliary-Pancreatic Center, University of Massachusetts Medical School, Worcester, MA 01655, USA.
Insights
Iron overload and HFE gene mutations are linked to increased risk and faster progression of chronic hepatitis C. These factors contribute to liver disease development alongside viral infection.
Area of Science:
- Hepatology
- Genetics
- Iron Metabolism
Background:
- Iron accumulation is implicated in non-hemochromatotic liver diseases.
- HFE and TfR1 gene variations may affect iron levels and viral hepatitis.
- Understanding these factors is crucial for managing chronic liver conditions.
Purpose of the Study:
- To investigate the role of hepatic iron, HFE, and TfR1 variations in chronic hepatitis C.
- To assess their impact on disease development and progression.
Main Methods:
- Studied 119 patients with chronic hepatitis C.
- Correlated clinical, laboratory, histopathological, and genetic data.
- Compared genetic variation frequencies with control groups.
Main Results:
- HFE mutations were more frequent in patients (48% vs. 38%).
- The C282Y HFE mutation was associated with earlier fibrosis development and higher hepatic iron.
- Hepatic fibrosis correlated with hepatic iron concentration.
Conclusions:
- Hepatic iron accumulation and HFE mutations are significant comorbid factors in chronic hepatitis C.
- These factors contribute to disease progression.
- TfR1 polymorphisms did not show a clear association with disease severity.
Background/Aims:
Recent evidence implicates iron as a comorbid factor for development of non-hemochromatotic liver diseases. Mutations or polymorphisms in the HFE gene or the TfR1 gene may influence the accumulation of iron in the liver or other tissues or may influence chronic viral hepatitis apart from effects on iron homeostasis. The aim of this study was to assess the role of hepatic iron, HFE and TfR1 variations on development and progression of chronic hepatitis C infection.
Methods:
We studied 119 consecutive patients with chronic hepatitis C, correlating clinical, laboratory, histopathological, and genetic data. Frequencies of genetic variations were compared with local and national controls.
Results:
HFE mutations were more common in patients than controls (48% vs. 38%, P=0.04), and advanced degrees of fibrosis developed at younger ages in subjects with the C282Y mutation (38.6 vs. 46.5 years, P=0.03). Patients carrying C282Y had higher mean hepatic iron concentrations (P=0.02), hepatic iron indices (P<=0.0001), and hepatic fibrosis scores (P=0.01). Hepatic fibrosis was correlated with hepatic iron concentration (P=0.03). TfR1 polymorphisms bore no detectable relation to disease severity or response to therapy.
Conclusions:
Hepatic iron and HFE mutations are comorbid factors that increase development and progression of chronic hepatitis C.
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