Non-HFE-related hereditary haemochromatosis, Type 4 (Q97536)

Hemochromatosis type 4 (also called ferroportin disease) is a rare form of hereditary hemochromatosis, a group of diseases characterised by excessive tissue iron deposition of genetic origin. It is phenotypically heterogeneous with two sub-types. Ferroportin disease form A is the usual form and is generally asymptomatic with no tissue damage and further complications. Ferroportin disease form B is rarer and resembles hemochromatosis type 1, but can affect children.