The p.M172K TFR2 mutation was identified in two Italian siblings aged 32 and 40 years old with primary iron overload. The two patients showed a severe increase in serum iron indices. From the age of 25, the male sib also revealed abnormal levels of hepatic enzymes, presumably in relation to iron induced liver damage. Clinical findings seem to evidence that type 3 hemochromatosis can be more serious than classic hemochromatosis. This report adds two more type 3 hereditary hemochromatosis cases which suggest that TFR2 mutations could be more frequently involved in non-HFE hemochromatosis than has been actually thought.
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