Fluticasone-Based versus Budesonide-Based Triple Therapies in COPD: Real-World Comparative Effectiveness and Safety.

Triple therapy for chronic obstructive pulmonary disease (COPD) is recommended for some patients, but the inhaled corticosteroids (ICS) may differ in effectiveness and safety. We compared budesonide-based and fluticasone-based triple therapy given in two inhalers on the incidence of exacerbation, mortality and severe pneumonia, using an observational study approach. We identified a cohort of patients with COPD, new users of triple therapy given in two inhalers during 2002-2018, age 50 or older, from the UK's CPRD database, and followed for one year. The hazard ratio (HR) of exacerbation, all-cause death and pneumonia was estimated using the Cox regression model, weighted by fine stratification of the propensity score of treatment initiation. The cohort included 29,716 new users of fluticasone-based triple therapy and 9,646 of budesonide-based. The HR of a first moderate or severe exacerbation with budesonide-based triple therapy was 0.98 (95% CI: 0.94-1.03), relative to fluticasone-based, while for a severe exacerbation it was 0.97 (95% CI: 0.87-1.07). The incidence of all-cause death was lower with budesonide-based therapy among patients with no prior exacerbations (HR 0.80; 95% CI: 0.66-0.98). The HR of severe pneumonia with budesonide-based therapy was 0.84 (95% CI: 0.75-0.95). In a real-world clinical setting of COPD treatment, budesonide-based triple therapy given in two inhalers was generally as effective at reducing exacerbations as fluticasone-based triple therapy. However, the budesonide-based triple therapy was associated with a lower incidence of severe pneumonia and possibly also of all-cause death, especially among patients with no prior exacerbations for whom triple therapy is not recommended.