Bessonova L., Volkova N., Higgins M., Bengtsson L., Tian S., SimardC., Konstan M.W., Sawicki G.S., Sewall A., Nyangoma S.,Elbert A., Marshall B.C., Bilton D. Data from the US and UK cysticfibrosis registries support disease modification by CFTR modulationwith ivacaftor. This evidence concerns the gene CFTR and cystic fibrosis.