Genetic abnormalities and juvenile hemochromatosis: mutations of the HJV gene encoding hemojuvelin.

Blood

The Scripps Research Institute, Department of Molecular and Experimental Medicine, 10550 N Torrey Pines Road, La Jolla, CA 92037, USA.

Published: June 2004

AI Article Synopsis

  • - Juvenile hemochromatosis is a genetic disorder that leads to excessive iron storage, resulting in symptoms like hormonal issues and heart problems.
  • - The gene responsible for this condition, originally thought to be named HFE2, is more appropriately labeled HJV since it doesn't belong to the HFE family.
  • - Research on two families with juvenile hemochromatosis revealed new mutations in the HJV gene, supporting its role as the cause of the disease.

Article Abstract

Juvenile hemochromatosis is an early-onset form of iron storage disease characterized by hypogonadotrophic hypogonadism and cardiomyopathy. Recently, the putative causative gene (LOC148738) encoding a protein designated hemojuvelin was cloned. The previously proposed designation of this gene as HFE2 is contrary to established convention, because it is not a member of the HFE family. We suggest that it be designated HJV. We sequenced this gene in members of 2 previously reported kinships that manifest typical juvenile hemochromatosis. In one kinship, 2 previously undescribed mutations of HJV were identified, c.238T>C (C80R) and c.302T>C (L101P). In the second kinship, 2 previously identified mutations, G320V and I222N, were found. These studies confirm that mutations in HJV cause juvenile hemochromatosis.

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http://dx.doi.org/10.1182/blood-2004-01-0072DOI Listing

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  • Juvenile hemochromatosis (JH) is a hereditary genetic disorder leading to excessive iron accumulation, which can damage organs and cause serious conditions like cardiomyopathy and diabetes.
  • A rare case of a 28-year-old woman who experienced cardiac arrest and organ failure due to severe symptoms of JH highlights the dangers of delayed diagnosis.
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  • Juvenile hemochromatosis (JH) is a rare genetic disorder characterized by excessive iron buildup in the body, leading to serious organ damage, primarily caused by mutations in the associated gene.
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