Successful off-label use of elexacaftor/tezacaftor/ivacaftor in an infant with severe CF disease. - Shevill E; Wainwright CE; Churchett M; Sexton J; Irving H; Manoy S; Figgins S; Swyer K; Fazackerley LA; Robinson PD (Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society, 2025)