The gene for hemochromatosis was identified in 1996 and two mutations mere
found. Homozygosity for one of these, C282Y, is associated with hemochromat
osis in a high percentage of patients. Genetic analysis of patient DNA is,
therefore, a very useful tool to aid and confirm diagnosis and to screen as
ymptomatic relatives of patients to identify those at risk of developing th
is common, easily treated disease.