Hemojuvelin (HJV) mutations in persons of European, African-American and Asian ancestry with adult onset haemochromatosis.
Mutations in the chromosome 1q-linked gene hemojuvelin (HJV) have recently been found to be a cause of juvenile haemochromatosis. We addressed the question of whether hemojuvelin mutations may influence the phenotype of patients with adult-onset haemochromatosis with or without mutations of the HFE gene. We sequenced the complete coding region of 133 subjects with iron overload. To screen a large number of patients, we also developed conditions for analysis by denaturing high-performance liquid chromatography (dHPLC). This diagnostic modality detects many mutations of the HJV gene. One patient with severe iron overload was found to be a compound heterozygote for HJV mutations, one of which had previously been identified in patients with juvenile haemochromatosis (G320V) and the other was novel (C321W). A number of other mutations were identified, but none were clearly associated with increases in the body iron burden. Notable among these was a DNA triplet insert, predicting an insertion of glycine, found in two African-American subjects, one with and one without iron storage disease.
Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA. plee@scripps.edu
Pauline L
PL
Lee
James C
JC
Barton
David
D
Brandhagen
Ernest
E
Beutler
D000328:Adult; D001741:Black or African American; D017668:Age of Onset; D001213:Asian; D016022:Case-Control Studies; D005260:Female; D058851:GPI-Linked Proteins; D006432:Hemochromatosis / Q000235:genetics*; D000071020:Hemochromatosis Protein; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D008297:Male; D008565:Membrane Proteins / Q000235:genetics*; D019683:Penetrance; D011110:Polymorphism, Genetic; D044465:White People
D058851:GPI-Linked Proteins; C481006:HJV protein, human; D000071020:Hemochromatosis Protein; D008565:Membrane Proteins