Diagnostic genetic testing for hereditary hemochromatosis is readily available for clinically relevant HFE variants (i.e., those that generate the C282Y, H63D and S65C HFE polymorphisms); however, genetic testing for other known causes of iron overload, including mutations affecting genes encoding hemojuvelin, transferrin receptor 2, HAMP, and ferroportin is not. As an alternative to conventional genetic testing we propose diagnostic use of whole exome sequencing for characterization of non-HFE hemochromatosis. To illustrate the effectiveness of whole exome sequencing as a diagnostic tool, we present the case of an 18-year-old female with a probable case of juvenile hemochromatosis, who was referred for specialty care after testing negative for commonly occurring HFE variants. Whole exome sequencing offered complete coverage of target genes and is a fast, cost effective diagnostic tool for characterization of non-HFE hemochromatosis.
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| http://dx.doi.org/10.1016/j.bcmd.2015.04.002 | DOI Listing |
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