IngentaConnect A previously undescribed nonsense mutation of the HFE gene

Authors: Beutler E.¹; Griffin M.²; Gelbart T.¹; West C.¹

Source: Clinical Genetics, Volume 61, Number 1, January 2002 , pp. 40-42(3)

Abstract:

Beutler E, Griffin MJ , Gelbart T, West C. A previously undescribed nonsense mutation of the HFE gene

Clin Genet 2002: 61: 40–42. © Munksgaard, 2002

A patient with clinically manifest hereditary hemochromatosis was found to be heterozygous for the c.845 A rarr G (C282Y) mutation. As simple heterozygotes for this mutation do not develop the hemochromatosis phenotype, the coding region of the patient's HFE gene was sequenced and a previously undescribed nonsense mutation was identified at c.211 C rarr T (R74X). The patient's brother who also had the hemochromatosis phenotype shared his HFE genotype. To determine how common such mutations might be, the coding and 5 prime region of the HFE genes of 11 subjects who had been found in a large population survey to be heterozygous for the C282Y mutation and had elevated ferritin levels were sequenced. No mutations were found. Sequencing of the HFE gene also revealed two polymorphisms that had not previously been noted, - 467 C rarr G and - 970 T rarr G. Neither of these mutations appear to cause an abnormality in iron metabolism.

Keywords: ferritin; heterozygote; iron; polymorphism

Language: English

Document Type: Original article

Affiliations: 1: The Scripps Research Institute, Department of Molecular and Experimental Medicine, Division of Hematology, La Jolla, CA, USA 2: Maine General Medical Center, Waterville ME, USA

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