Cystic fibrosis (CF) is a genetic disorder caused by mutations in the CFTR gene, leading to the production of thick and sticky mucus that affects various organs, particularly the lungs and digestive system. This condition primarily manifests in childhood and can result in severe respiratory and gastrointestinal complications. Advances in screening and treatment have improved the quality of life and life expectancy for individuals living with CF.

Cystic fibrosis is an autosomal recessive disorder, meaning that a child must inherit two copies of the defective gene—one from each parent—to develop the condition. Risk factors include a family history of CF and belonging to certain ethnic groups, such as Caucasians, who have a higher prevalence. Environmental factors, such as exposure to pathogens or pollutants, may also exacerbate symptoms in individuals with CF.

Common symptoms of cystic fibrosis include persistent coughing, frequent lung infections, and difficulty breathing due to mucus build-up in the lungs. Gastrointestinal manifestations can include poor growth, difficulty gaining weight, and intestinal blockage due to thick mucus obstructing the intestines. Other symptoms may involve salty-tasting skin, sinus problems, and diabetes resulting from pancreatic insufficiency.

Cystic fibrosis (CF) is a genetic disorder caused by mutations in the CFTR gene, which plays a crucial role in producing a protein that regulates salt and water transport in cells. The most common mutation associated with CF is the ΔF508 mutation, leading to the production of thick, sticky mucus in various organs, primarily the lungs and digestive system. This dysfunction results in obstruction of airways and pancreatic ducts, causing respiratory and gastrointestinal complications. The condition follows an autosomal recessive inheritance pattern, meaning both parents must carry and pass on the faulty gene for a child to be affected.

Cystic fibrosis diagnosis typically involves a combination of newborn screening tests, sweat chloride tests, and genetic testing to identify mutations in the CFTR gene. The newborn screening often detects elevated levels of immunoreactive trypsinogen (IRT) in the blood. If CF is suspected, a sweat test is performed to measure the amount of chloride in sweat, which is usually elevated in individuals with cystic fibrosis.

There is currently no cure for cystic fibrosis, but management focuses on alleviating symptoms and improving quality of life. Treatment approaches often include a combination of airway clearance therapies, inhaled medications to open the airways, and enzymes to aid digestion due to pancreatic insufficiency. Antibiotics are frequently prescribed to treat or prevent lung infections, while newer CFTR modulators are targeted therapies that can significantly improve lung function and overall health in certain patients. Close monitoring by a multidisciplinary team is essential to customize treatment plans to individual needs.

While there is no known way to prevent cystic fibrosis due to its genetic nature, prenatal testing and genetic counseling can help prospective parents assess the risk of having a child with the condition. For those with a family history of CF, carrier screening is recommended to understand their potential risk. Maintaining an overall healthy lifestyle and minimizing exposure to respiratory infections can also help manage symptoms and complications once diagnosed.