Juvenile hemochromatosis caused by a novel combination of hemojuvelin G320V/R176C mutations in a 5-year old girl.

نویسندگان

  • Patricia Aguilar-Martinez
  • Chun Yu Lok
  • Séverine Cunat
  • Estelle Cadet
  • Kathryn Robson
  • Jacques Rochette
چکیده

During a screening program we identified a 5-year old girl with elevated iron parameters. The child was found to have a combination of a novel R176C mutation together with the G320V mutation in the juvenile hemochromatosis gene (HJV). The girl was also homozygous for the H63D mutation in HFE. The possibility of detecting juvenile hemochromatosis before the onset of clinical manifestations raises questions about the management of such young children in order to prevent iron overload.

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منابع مشابه

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

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 ...

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Defective targeting of hemojuvelin to plasma membrane is a common pathogenetic mechanism in juvenile hemochromatosis.

Hemojuvelin (HJV) positively modulates the iron regulator hepcidin, and its mutations are the major cause of juvenile hemochromatosis (JH), a recessive disease leading to iron overload. Defective HJV reduces hepcidin up-regulation both in humans and in Hjv-deficient mice. To investigate the JH pathogenesis and the functional properties of human HJV we studied the biosynthesis and maturation of ...

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Juvenile hemochromatosis associated with heterozygosity for novel hemojuvelin mutations and with unknown cofactors.

BACKGROUND & AIMS Juvenile hemochromatosis (JH) is a rare autosomal recessive disorder characterized by severe early-onset iron overload, caused by mutations in hemojuvelin (HJV), hepcidin (HAMP), or a combination of genes regulating iron metabolism. Here we describe two JH cases associated with simple heterozygosity for novel HJV mutations and unknown genetic factors. Case 1: A 12 year-old mal...

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RED CELLS Defective targeting of hemojuvelin to plasma membrane is a common pathogenetic mechanism in juvenile hemochromatosis

Hemojuvelin (HJV) positively modulates the iron regulator hepcidin, and its mutations are the major cause of juvenile hemochromatosis (JH), a recessive disease leading to iron overload. Defective HJV reduces hepcidin up-regulation both in humans and in Hjv-deficient mice. To investigate the JH pathogenesis and the functional properties of human HJV we studied the biosynthesis and maturation of ...

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Interaction of hemojuvelin with neogenin results in iron accumulation in human embryonic kidney 293 cells.

Type 2 hereditary hemochromatosis (HH) or juvenile hemochromatosis is an early onset, genetically heterogeneous, autosomal recessive disorder of iron overload. Type 2A HH is caused by mutations in the recently cloned hemojuvelin gene (HJV; also called HFE2) (Papanikolaou, G., Samuels, M. E., Ludwig, E. H., MacDonald, M. L., Franchini, P. L., Dube, M. P., Andres, L., MacFarlane, J., Sakellaropou...

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عنوان ژورنال:
  • Haematologica

دوره 92 3  شماره 

صفحات  -

تاریخ انتشار 2007