Study design (if review, criteria of inclusion for studies)
Double-blind randomised placebo controlled trial, parallel design
Participants
Mean age 26.9 years. Confirmed CF, FEV1 >70%, sterile. 16 participants (all males).
Interventions
Single dose of CFTR DNA+liposome, or liposome alone nebulised to lungs.
Outcome measures
Adverse events, gene expression, CFTR protein expression, airway potential difference.
Main results
Seven of the eight patients receiving the active complex reported mild influenza-like symptoms that resolved within 36 h. Six of eight patients in both the active and placebo groups reported mild airway symptoms over a period of 12 h following pulmonary administration. No specific treatment was required for either event. Pulmonary administration resulted in a significant (p<0.05) degree of correction of the chloride abnormality in the patients receiving active treatment but not in those on placebo when assessed by in-vivo potential difference and chloride efflux. Bacterial adherence was also reduced. We detected no alterations in the sodium transport abnormality. A similar pattern occurred following nasal administration.
Authors' conclusions
Cationic-lipid-mediated CFTR gene transfer can significantly influence the underlying chloride defect in the lungs of patients with cystic fibrosis.