Haemochromatosis and HLA--H

Jazwinska, Elizabeth C., Cullen, Lara M., Busfield, Frances, Pyper, Wendy R., Webb, Sonja I., Powell, Lawrie W., Morris, C. Philip, & Walsh, Terence Patrick (1996) Haemochromatosis and HLA--H. Nature genetics, 14(3), pp. 249-251.

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The recently identified can didate gene, HLA-H, for haemochromatosis (HH) by Feder et al. generated considerable scientific interest coupled with a degree of uncertainty about the likely involvement of this gene in this common iron metabolism disorder, Feder et al. found a single point mutation resulting in an amino acid substitution (C282Y) that was homozygous in 148 (83%) of their patients, heterozygous in 9 patients (5%) but completely absent in 21 patients (12%). They proposed that the lack of a causative mutation in HLA-H in 12% of their patients was because these cases were not linked to chromosome 6p. A significant weakness in this argument is that all familial studies of the disorder so far have concluded that HH is due to a single major HLA-linked gene5-7. The ultimate test for a candidate gene is the clear segregation of a mutation with the disorder in all patients. Thus, some of the uncertainty surrounding the role of HLA-H in HH may be resolved by the identification of complete concordance of the C282Y mutation (or some other mutation) in HLA H with disease status in HH families. One potential problem in the design of such an experimental analysis is that a number of studies have shown the presence of a predominant ancestral haplotype in all HH populations examined: Australian, French, Italian, UK and US Thus in the analysis of a putative causative mutation, it is important to include families with...

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ID Code: 68579
Item Type: Journal Article
Refereed: Yes
Additional URLs:
DOI: 10.1038/ng1196-249
ISSN: 1061-4036
Subjects: Australian and New Zealand Standard Research Classification > BIOLOGICAL SCIENCES (060000) > GENETICS (060400) > Quantitative Genetics (incl. Disease and Trait Mapping Genetics (060412)
Divisions: Current > Schools > School of Biomedical Sciences
Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Deposited On: 16 Mar 2014 22:51
Last Modified: 17 Mar 2015 02:14

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