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Gut 52:1215-1217 doi:10.1136/gut.52.8.1215
  • Case report

A novel mutation in ferroportin1 is associated with haemochromatosis in a Solomon Islands patient

  1. K E Arden1,
  2. D F Wallace1,
  3. J L Dixon2,
  4. L Summerville1,
  5. J W Searle3,
  6. G J Anderson4,
  7. G A Ramm5,
  8. L W Powell4,
  9. V N Subramaniam6
  1. 1Membrane Transport Laboratory, The Queensland Institute of Medical Research, Brisbane, Queensland, Australia
  2. 2Iron Metabolism Laboratory, The Queensland Institute of Medical Research, Brisbane, Queensland, Australia
  3. 3Department of Pathology, The University of Queensland, Brisbane, Queensland, Australia
  4. 4Iron Metabolism Laboratory, The Queensland Institute of Medical Research, and Department of Medicine, The University of Queensland, Brisbane, Queensland, Australia
  5. 5Hepatic Fibrosis Group, The Queensland Institute of Medical Research, and Department of Medicine, The University of Queensland, Brisbane, Queensland, Australia
  6. 6Membrane Transport Laboratory, The Queensland Institute of Medical Research, and Department of Medicine and Department of Biochemistry, The University of Queensland, Brisbane, Queensland, Australia
  1. Correspondence to:
    Dr V Nathan Subramaniam, Membrane Transport Laboratory, The Queensland Institute of Medical Research, 300 Herston Rd, Herston, Brisbane, QLD 4006, Australia;
    nathanS{at}qimr.edu.au
  • Accepted 20 February 2003

Abstract

Background: A severe form of iron overload with the clinicopathological features of haemochromatosis inherited in an autosomal dominant manner has been described in the Solomon Islands. The genetic basis of the disorder has not been identified. The disorder has similarities to type 4 haemochromatosis, which is caused by mutations in ferroportin1.

Aims: The aims of this study were to identify the genetic basis of iron overload in a patient from the Solomon Islands.

Patient and methods: Genomic DNA was isolated from peripheral blood leucocytes of a Solomon Islands man with severe iron overload. The entire coding region and splice sites of the ferroportin1 gene was sequenced.

Results and conclusions: A novel missense mutation (431A>C; N144T) was identified in exon 5 of the ferroportin1 gene. A novel restriction endonuclease based assay which identifies both the N144T and N144H mutations was developed which will simplify the diagnosis and screening of patients for iron overload in the Solomon Islands and other populations. This is the first identified mutation associated with haemochromatosis in the Solomon Islands population.

Footnotes

  • K E Arden and D F Wallace contributed equally to this work.