This pathology displays a large genetic heterogeneity because several other types of hemochromatosis, associated with different genes and patterns of inheritance, have been reported [1]: HH type 2B is a juvenile form linked to the HAMP gene (encoding for hepcidin) [2-4], HH type 3 is linked to the TfR2 gene (encoding for transferrin receptor 2) [5-7], HH type 4 is linked to the SLC11A3 gene (encoding for ferroportin, an intestinal iron transporter) [8,9]. The gene discussed is TFR2; the disease is hemochromatosis type 1.