The European respiratory journal : official journal of the European Society for Clinical Respiratory Physiology
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Randomized Controlled Trial
Efficacy and safety of twice-daily aclidinium bromide in COPD patients: the ATTAIN study.
The efficacy and safety of two doses of aclidinium bromide were evaluated in patients with moderate to severe chronic obstructive pulmonary disease (COPD). In this 24-week, double-blind trial, patients were randomised to twice-daily aclidinium (200 μg or 400 μg) or placebo. The primary efficacy end-point was change in trough forced expiratory volume in 1 s (FEV(1)) at week 24. ⋯ Aclidinium 200 μg and 400 μg produced significant improvements over placebo in baseline-adjusted mean SGRQ total score (-3.8 and -4.6 units; p<0.001 and p<0.0001) and TDI focal score (0.6 and 1.0 units; p<0.05 and p<0.001) at week 24. With both aclidinium doses, the incidence of anticholinergic adverse events was low, and similar to placebo. Twice-daily aclidinium significantly improved bronchodilation, health status and dyspnoea, and was well tolerated in patients with COPD.