Hemochromatosis with mutation of the ferroportin 1 (IREG1) gene.

The HFE, H ferritin, TFR2, and ferroportin 1 genes of a Japanese patient diagnosed as having hemochromatosis were amplified by PCR and sequenced. A novel mutation in the ferroportin 1 was found in the patient. It was located in the noncoding region of the ferroportin 1; nucleotide 117 adenine was changed to guanine, 7 nucleotides downstream the iron responsive element (IRE) region. This mutation was not found in the patient's son or daughter, or in 50 healthy individuals. It was suggested that the mutation in the ferroportin 1 may be related to hemochromatosis of this patient.