CFTR and cystic fibrosis: On the other hand, CF patients whose functional defect in the CFTR protein is amenable to CFTR-targeted therapy have shown positive effects on weight development by CFTR-corrector/potentiator therapy, suggesting that multiple options may soon be available to treat the defects in intestinal function in CF patients (Guimbellot et al., 2019; Regard et al., 2023).