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Rare HFE variants are the most frequent cause of hemochromatosis in non‐c282y homozygous patients with hemochromatosis
Author(s) -
HamdiRozé Houda,
BeaumontEpinette MariePascale,
Ben Ali Zeineb,
Le Lan Caroline,
LoustaudRatti Véronique,
Causse Xavier,
Loreal Olivier,
Deugnier Yves,
Brissot Pierre,
Jouanolle AnneMarie,
BardouJacquet Edouard
Publication year - 2016
Publication title -
american journal of hematology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.456
H-Index - 105
eISSN - 1096-8652
pISSN - 0361-8609
DOI - 10.1002/ajh.24535
Subject(s) - hemochromatosis , hereditary hemochromatosis , hamp , medicine , hepcidin , genetics , gastroenterology , phenotype , compound heterozygosity , biology , gene , anemia
p.Cys282Tyr (C282Y) homozygosity explains most cases of HFE ‐related hemochromatosis, but a significant number of patients presenting with typical type I hemochromatosis phenotype remain unexplained. We sought to describe the clinical relevance of rare HFE variants in non‐C282Y homozygotes. Patients referred for hemochromatosis to the National Reference Centre for Rare Iron Overload Diseases from 2004 to 2010 were studied. Sequencing was performed for coding region and intronic flanking sequences of HFE, HAMP, HFE2, TFR2, and SLC40A1 . Nine private HFE variants were identified in 13 of 206 unrelated patients. Among those, five have not been previously described: p.Leu270Argfs*4, p.Ala271Valfs*25, p.Tyr52*, p.Lys166Asn, and p.Asp141Tyr. Our results show that rare HFE variants are identified more frequently than variants in the other genes associated with iron overload. Rare HFE variants are therefore the most frequent cause of hemochromatosis in non‐C282Y homozygote HFE patients. Am. J. Hematol. 91:1202–1205, 2016. © 2016 Wiley Periodicals, Inc.