<unk><unk>  is caused by mutations in the CFTR gene. The genetic mutations result in defective transport of chloride, and secondarily sodium, by epithelial cells and eventually abnormal viscous mucoid secretions mostly in lungs and GI tract.
Cystic fibrosis causes
Asthma causes
Cowden syndrome causes
Down syndrome causes
Renal agenesis causes
Tuberous sclerosis causes
Vulvitis causes
Ventricular septal defect causes