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This mutation is associated with diverse health issues, however H63D syndrome is the only known specific expression of a homozygous HFE-H63D mutation to date. The homozygous HFE-H63D mutation is the cause of classic and treatable hemochromatosis in only 6.7% of its carriers. [25] H63D syndrome is independently a distinct entity, and the ...
A study of 3,011 unrelated white Australians found that 14% were heterozygous carriers of an HFE mutation, 0.5% were homozygous for an HFE mutation, and only 0.25% of the study population had clinically relevant iron overload. Most patients who are homozygous for HFE mutations do not manifest clinically relevant haemochromatosis (see Genetics ...
The 2015 version of this article was updated by an external expert under a dual publication model. The corresponding academic peer reviewed article was published in Gene and can be cited as: James C Barton, Corwin Q Edwards, Ronald T Acton (9 October 2015). "HFE gene: Structure, function, mutations, and associated iron abnormalities". Gene ...
Type 3 HH is characterized by compound heterozygote mutations in both transferrin receptor 2 (TFR2) and HFE, i.e. a single mutation in each gene. HFE is located on chromosome 6 and TFR2 is located on chromosome 7. [18] [19] Multiple types of mutations have been found in TFR2 and associated with HH Type 3, including premature termination ...
Clinically, most cases of hemochromatosis are found in homozygotes for the most common mutation in the HFE gene. [1] But at each gene locus associated with the disease, there is the possibility of compound heterozygosity, often caused by inheritance of two unrelated alleles, of which one is a common or classic mutation, while the other is a ...
Mutations of the HFE gene (hemostatic iron regulator) located on chromosome 6 (responsible for iron regulatory protein hepcidin production) are responsible for most cases of hereditary hemochromatosis; 95% of cases of hereditary hemochromatosis involve a mutation of this HFE gene. [1] [7] Non-HFE hereditary hemochromatosis involves mutations in ...
An additional aggravating mutation affecting variegate porphyria can be found at 6p21.3 on the HFE gene. [7] A 2006 clinical, biochemical and mutational study of eight Swiss variegate porphyria patients and their families found four novel PPOX gene mutations believed to be unique to the Swiss population. [8]
The HFE gene makes a protein that helps cells regulate the absorption of iron from the digestive tract and into the cells of the body. Certain mutations in the HFE gene cause hemochromatosis (an iron overload disorder). People who have these mutations are also at an increased risk of developing porphyria cutanea tarda. [citation needed]