Table 1.Classification of hemochromatosis.
A. Hereditary hemochromatosis
1. Classical hemochromatosis (hereditary hemochromatosis; HFE hemochromatosis) (Type 1)
2. Juvenile hemochromatosis (Type 2)
a. Chromosome 1q-linked
b. Abnormality of hepcidin
3. Transferrin receptor-2 deficiency (Type 3)
4. Ferroportin deficiency (includes some cases of African iron overload ¹̛ ²) (Type 4)
5. African iron overload
B. Secondary hemochromatosis