The most common cause of cystic fibrosis (CF) is the out-of-frame deletion of three nucleotides (CTT) in the CFTR gene, resulting in loss of phenylalanine at position 508 (ΔF508) of the CFTR protein and a synonymous mutation (ATC/ATT) at codon encoding isoleucine 507 [1–3]. Here, CFTR is linked to cystic fibrosis.