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Cystic Fibrosis: Pathogenesis01:23

Cystic Fibrosis: Pathogenesis

Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
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Genetic testing in children with surfactant dysfunction.

Simona Turcu1, Emma Ashton, Lucy Jenkins

  • 1Department of Pediatric Intensive Care, Great Ormond Street Hospital, London, UK.

Archives of Disease in Childhood
|April 30, 2013
PubMed
Summary
This summary is machine-generated.

Genetic testing identified surfactant dysfunction disorders in 7.5% of referred UK neonates and children with persistent respiratory issues. This research aids in developing better diagnostic strategies for these rare genetic lung conditions.

Keywords:
genetic testingpaediatric lung diseasesurfactant dysfunction

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Area of Science:

  • Pediatric Pulmonology
  • Medical Genetics
  • Neonatology

Background:

  • Surfactant protein dysfunction disorders are rare genetic conditions affecting lung function.
  • Accurate genetic diagnosis is crucial for patient management and genetic counseling.
  • The UK has established genetic testing services for these disorders.

Purpose of the Study:

  • To document the UK's experience with genetic diagnoses of surfactant protein dysfunction.
  • To propose a referral algorithm for neonates and children with persistent respiratory problems.
  • To analyze the clinical presentation, genetic mutations, and outcomes of affected individuals.

Main Methods:

  • Analysis of 427 referrals for surfactant mutation testing between 2006 and 2011.
  • Review of genetic analysis results and physician-reported clinical, radiological, and histological data.
  • Contacting referring physicians for detailed case information and outcomes.

Main Results:

  • Twenty-five new cases (7.5%) with genetic mutations for surfactant dysfunction were identified.
  • Mutations included surfactant protein B (SFTPB) dysfunction (6 cases), surfactant protein C (SFTPC) dysfunction (7 cases), and ABCA3 dysfunction (12 cases).
  • Most affected infants presented with respiratory distress at birth; SFTPB cases had fatal outcomes, ABCA3 outcomes varied, and SFTPC cases often survived with medication.

Conclusions:

  • Surfactant mutation analysis is a valuable tool for genetic diagnosis and counseling in the UK.
  • The rarity of these disorders necessitates international collaboration for algorithm validation.
  • Rationalizing referrals is essential for the efficient and cost-effective operation of genetic testing services.