%0 Journal Article %T Ivacaftor treatment in patients with cystic fibrosis and the G551D-CFTR mutation %A Isabelle Sermet-Gaudelus %J European Respiratory Review %D 2013 %I European Respiratory Society %X Cystic fibrosis (CF) is an autosomal recessive lethal disease caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene that encodes for CFTR, an epithelial cell-surface expressed protein responsible for the transport of chloride (Cl-). Gating mutations associated with defective conductance can be modulated by CFTR potentiators. Ivacaftor is a CFTR potentiator approved for the treatment of CF patients >6 yrs of age with at least one copy of the G551D-CFTR mutation. Herein, the clinical trial development programme for ivacaftor will be reviewed, including two pivotal studies in adolescents/adults and in children. These studies report sustained improvements in lung function and sweat chloride concentrations, and a reduction in pulmonary exacerbations over a 48-week treatment period. In the era of personalised medicine, ivacaftor offers an effective and well-tolerated treatment for the clinical management of CF patients with the G551D mutation. A long-term, open-label study will report the effects of ivacaftor over a further 48 weeks. %K CFTR mutations %K CFTR potentiator %K cystic fibrosis %K G551D %K ivacaftor %K personalised medicine %U http://err.ersjournals.com/content/22/127/66.full.pdf+html