Accurso et al report phase 3 results from industry-funded TIGER-1, testing t.i.d. inhaled denufusol (an ion channel regulator that alters sodium/chloride transport to improve mucociliary clearance) vs. placebo in early cystic fibrosis (FEV1>74% predicted). After 24 weeks, FEV1 was 45 mL better in the treated group, most of whom were younger than age 19. There was no difference in exacerbation rates. (n=352).