CFTR and cystic fibrosis: Cystic fibrosis (CF) is an autosomal recessive inherited disorder, which involves mutations of the cystic fibrosis transmembrane conductance regulator (CFTR, OMIM 602,421) gene on chromosome 7 (Cioppi et al., 2021; Fedder et al., 2021; Gaikwad et al., 2020).