Efficacy and safety of indacaterol in patients with chronic obstructive pulmonary disease aged over 65 years: A pooled analysis

Abstract

BackgroundAlthough the prevalence of chronic obstructive pulmonary disease (COPD) increases with age, no specific therapeutic approaches are available till date for the elderly population. AimTo assess the efficacy and safety of once-daily indacaterol 150 and 300 μg in elderly patients with moderate to severe COPD. MethodsData were pooled from 11 randomized, double-blind, placebo- and active-controlled studies (8445 patients with COPD). The patient population was stratified into age groups: young (≥40–<65 years; 52.3%), elderly (≥65–<75 years; 36.4%), and very elderly (≥75 years; 11.4%). The efficacy outcomes included improvements in trough forced expiratory volume in 1 s (FEV1), transition dyspnea index (TDI), and health status (St. George's Respiratory Questionnaire [SGRQ]); safety was also assessed at 12 weeks. ResultsAt Week 12, the mean improvement in FEV1 with indacaterol 150 μg versus placebo was comparable in the elderly (150 mL), very elderly (160 mL), and young (170 mL) groups (p < 0.001 for all comparisons). Similar improvement in FEV1 was observed with indacaterol 300 μg versus placebo in each group (p < 0.001). This improvement was also significantly higher with indacaterol than formoterol, salmeterol, and tiotropium in all groups (p < 0.01). Both TDI and SGRQ scores significantly improved with indacaterol versus placebo across age groups (p < 0.001) and were significantly higher than that for tiotropium (p < 0.001). Incidences of adverse events among indacaterol- or placebo-treated patients were similar, regardless of the age group. ConclusionsThis pooled analysis suggests that the efficacy and safety of indacaterol treatment is similar between elderly and younger patients with COPD.