CFTR protein repair therapy in cystic fibrosis

Arch Bronconeumol. 2014 Apr;50(4):146-50. doi: 10.1016/j.arbres.2013.07.013. Epub 2013 Oct 2.
[Article in English, Spanish]


Cystic fibrosis is a single gene, autosomal recessive disorder, in which more than 1,900 mutations grouped into 6 classes have been described. It is an example a disease that could be well placed to benefit from personalised medicine. There are currently 2 very different approaches that aim to correct the basic defect: gene therapy, aimed at correcting the genetic alteration, and therapy aimed at correcting the defect in the CFTR protein. The latter is beginning to show promising results, with several molecules under development. Ataluren (PTC124) is a molecule designed to make the ribosomes become less sensitive to the premature stop codons responsible for class i mutations. Lumacaftor (VX-809) is a CFTR corrector directed at class ii mutations, among which Phe508del is the most frequent, with encouraging results. Ivacaftor (VX-770) is a potentiator, the only one marketed to date, which has shown good efficacy for the class iii mutation Gly551Asp in children over the age of 6 and adults. These drugs, or a combination of them, are currently undergoing various clinical trials for other less common genetic mutations. In the last 5 years, CFTR has been designated as a therapeutic target. Ivacaftor is the first drug to treat the basic defect in cystic fibrosis, but only provides a response in a small number of patients. New drugs capable of restoring the CFTR protein damaged by the most common mutations are required.

Keywords: Aatluren; Ataluren; CFTR corrector; CFTR modulator; CFTR potentiator; Cystic fibrosis transmembrane conductance regulator; Fármaco corrector; Fármaco modulador; Fármaco potenciador; Ivacaftor; Lumacaftor; Proteína reguladora de la conductabilidad transmembrana de la fibrosis quística.

Publication types

  • Review

MeSH terms

  • Aminophenols / therapeutic use
  • Cystic Fibrosis / drug therapy*
  • Cystic Fibrosis Transmembrane Conductance Regulator / drug effects*
  • Cystic Fibrosis Transmembrane Conductance Regulator / genetics
  • Humans
  • Molecular Targeted Therapy*
  • Mutation / drug effects
  • Quinolones / therapeutic use


  • Aminophenols
  • Quinolones
  • Cystic Fibrosis Transmembrane Conductance Regulator
  • ivacaftor