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[Properdin mutations a risk factor for meningitis]

Sanna Seitsonen1, Merja Helminen, Hanna Jarva

  • 1HUS:n silmäsairaala ja Helsingin yliopisto, Haartman-instituutti, lääketieteellisen genetiikan osasto 00251 Helsinki.

Duodecim; Laaketieteellinen Aikakauskirja
|July 3, 2010
PubMed

Insights

Properdin deficiency, a rare genetic disorder, increases infection risk, particularly for males with Neisseria meningitidis. A novel mutation in a Finnish family highlights this X-linked immunodeficiency.

Area of Science:

  • Immunology
  • Genetics
  • Human Diseases

Background:

  • Properdin deficiency is a rare X-linked immunodeficiency.
  • It significantly elevates the risk of severe infections, especially Neisseria meningitidis.

Observation:

  • A Finnish family presented with a novel mutation in the properdin gene.
  • The index patient was diagnosed with meningococcal meningitis and severe properdin deficiency.

Findings:

  • A nonsense mutation (c.1164G > A; W377X) in exon 9 of the properdin gene was identified.
  • This mutation was inherited maternally and observed across multiple family members.

Implications:

  • This discovery expands the known genetic landscape of properdin deficiency.
  • Understanding this mutation aids in diagnosing and managing at-risk individuals and families.

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