The absence or reduced function of the CFTR gene results in extra thick mucosal secretions in organ systems with epithelial cell linings, such as the lungs, digestive system, hepatobiliary tracts, and vas deferens in males.3 Due to this abnormally viscous lining, CF patients struggle to clear mucus from their airways and are very susceptible to further lung colonization and bacterial infections. This evidence concerns the gene CFTR and cystic fibrosis.