CFTR and cystic fibrosis: All the information obtained from genetic studies has lead to the realization of a dream, which is the implementation of precision medicine in the healthcare network (Dzau and Ginsburg, 2016), which will culminate in the targeted treatment of monogenic diseases, as in the case of CF, and the treatment should be broad enough to “cover” all classes of mutations and/or specific mutations in the CFTR gene, with reduction of age for the beginning of drug use (Davies, 2015).