Cystic Fibrosis is a rare genetic disease that causes persistent lung infections and limits the ability to breathe over time. In people with Cystic Fibrosis, a defective gene (CFTR) causes a thick, sticky buildup of mucus in the lungs, pancreas, and other organs. People with Cystic Fibrosis have inherited two copies of the defective CFTR gene, one copy from each parent. In the lungs, the mucus clogs the airways and traps bacteria leading to recurrent infections, lung inflammation and damage, and eventually, respiratory failure. Patients with Cystic Fibrosis receive a combination of physiotherapy, postural drainage and antibiotics, which help remove mucus from their lungs, improve their ability to breathe, and treat chronic lung infections.