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Juvenile Hemochromatosis, Genetic Study and Long-term Follow up after Therapy

Masoud M Malekzadeh1, Amir Reza Radmard2, Alireza Nouroozi3

  • 1Liver and Pancreatobiliary Diseases Research Center, Digestive Disease Research Institute, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.

Middle East Journal of Digestive Diseases
|May 30, 2014
PubMed

Insights

This study identifies a novel HJV mutation in a family with juvenile hemochromatosis (JH), a rare iron overload disorder. Molecular genetic analysis is crucial for diagnosing and managing JH, even in cases negative for HFE mutations.

Area of Science:

  • Genetics
  • Molecular Biology
  • Hematology

Background:

  • Hereditary hemochromatosis (HH) is rare in Iran, with previous cases lacking HFE mutations.
  • Juvenile hemochromatosis (JH) is a severe form requiring accurate diagnosis.
  • This study investigates a family with suspected JH and negative HFE mutation status.

Purpose of the Study:

  • To perform a detailed molecular study of a family affected by severe juvenile hemochromatosis.
  • To identify the genetic basis of JH in a family with no reported HFE mutations.
  • To evaluate the utility of genetic analysis in diagnosing and managing JH.

Main Methods:

  • Pedigree analysis and clinical follow-up of affected siblings over 3 years.
  • Microsatellite analysis and comprehensive gene sequencing of HH-related genes.
  • Exclusion of mutations in HAMP, TfR2, and FPN genes.

Main Results:

  • Two siblings diagnosed with clinical JH exhibited homozygosity for the HJV c.265T>C (p.C89R) mutation.
  • The proband also carried a heterozygous HFE c.884T>C (p.V295A) mutation.
  • A homozygous HJV polymorphic variant (c.98-6C>G) was identified in affected siblings.

Conclusions:

  • Molecular analysis of HH-related genes is essential for accurate JH diagnosis.
  • Genetic findings, combined with MRI and elastography, aid in JH management and follow-up.
  • This study highlights the HJV gene as a significant factor in non-HFE hereditary hemochromatosis.

Keywords:
Genetic StudyHemojuvelin MutationIranJuvenile Hemochromatosis

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