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[Hereditary hyperferritinaemia-cataract syndrome].

J M van der Klooster1

  • 1Ikazia Ziekenhuis, afd. Intensive Care, Montessoriweg 1, 3083 AN Rotterdam. jm.vd.klooster@ikazia.nl

Nederlands Tijdschrift Voor Geneeskunde
|October 17, 2003
PubMed
Summary

Hereditary hyperferritinaemia-cataract syndrome (HHCS) is an autosomal dominant disorder causing high ferritin levels without iron overload. Genetic analysis confirmed a mutation in the L-ferritin gene, leading to cataracts.

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Area of Science:

  • Genetics
  • Ophthalmology
  • Internal Medicine

Background:

  • Hereditary hyperferritinaemia-cataract syndrome (HHCS) is a rare genetic disorder.
  • Characterized by elevated serum ferritin levels in the absence of iron overload.
  • Caused by mutations in the iron-responsive element of the L-ferritin gene.

Observation:

  • Two patients, a great aunt and nephew, presented with hyperferritinaemia and a history of bilateral cataract surgery during adolescence.
  • DNA analysis confirmed HHCS with a specific point mutation (Pavia-1) in the L-ferritin gene on chromosome 19.
  • The mutation leads to dysregulated L-ferritin mRNA translation, independent of iron levels.

Findings:

  • HHCS is an autosomal dominant condition.
  • The primary clinical manifestation is early-onset, bilateral cataracts due to L-ferritin deposition in the lens stroma.
  • Serum ferritin is elevated, but there is no systemic iron overload.

Implications:

  • Accurate differentiation of HHCS from hereditary hemochromatosis is crucial for internists and hematologists to prevent unnecessary invasive procedures and mistreatment.
  • Ophthalmologists should consider HHCS in the differential diagnosis of congenital or juvenile cataracts.
  • Genetic counseling and family screening are important components of HHCS management.

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