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Cystic fibrosis is the most common potentially lethal autosomal recessive disorder in Caucasian populations, characterised by chronic suppurative lung disease and chronic exocrine pancreatic insufficiency.

It affects 1 in 2500 infants and the frequency of carrier heterozygotes is estimated to be 5%.

Cystic fibrosis is a multi-system genetic disorder affecting the lungs, pancreas, liver and intestine. It can have a significant impact on life expectancy and quality of life (1)

  • current median age of those who have died is 28 years and the median predicted survival is 45.1 years

  • diagnosis is primarily made during newborn screening
    • median age at diagnosis is 2 months, and 1 in every 2500 babies born in the UK has cystic fibrosis

  • approximately 60% of people on the UK cystic fibrosis registry are aged over 16 years

The predominant symptoms of CF are attributed to epithelial abnormalities in the respiratory, digestive and reproductive tracts:

  • although lungs are normal at birth, recurrent respiratory infection is a major presenting feature
  • 85% of CF patients have pancreatic insufficiency
  • 10% of CF newborns suffer meconium ileus
  • patients are also prone to hepatic cirrhosis and male infertility

There are many different mutations responsible for cystic fibrosis

  • UK registry shows that 90.8% of people with cystic fibrosis have one known genotype; however 8.9% of people have at least one unknown genotype (1)

Lung function is often reduced in cystic fibrosis (1)

  • typical measure of lung function is forced expiratory volume in 1 second (FEV1)
  • FEV1 is a key predictor of life expectancy in people with cystic fibrosis, and optimising lung function is a major goal of care

Llung infections are a cause of significant morbidity in cystic fibrosis

  • chronic infection (for example with Staphylococcus aureus and Pseudomonas aeruginosa) may need long-term use of antibiotics

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