Cystic fibrosis (CF), the most common life-shortening genetic disease affecting approximately 80,000 people worldwide (Bobadilla et al., 2002, The Molecular Genetic Epidemiology, na, Farrell, 2008, Rodrigues et al., 2009), is caused by mutations in the gene encoding the cystic fibrosis transmembrane conductance regulator (CFTR) protein. This evidence concerns the gene CFTR and cystic fibrosis.