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  • Title: Bronchodilator efficacy of single doses of indacaterol in Japanese patients with COPD: A randomised, double-blind, placebo-controlled trial.
    Author: Kato M, Makita H, Uemura K, Fukuchi Y, Hosoe M, Emery C, Higgins M, Kramer B.
    Journal: Allergol Int; 2010 Sep; 59(3):285-293. PubMed ID: 20567133.
    Abstract:
    BACKGROUND: Indacaterol is an investigational, novel, inhaled once-daily ultra-long-acting beta-2 agonist for the treatment of chronic obstructive pulmonary disease (COPD). This study evaluated the 24-h bronchodilatory efficacy and safety of indacaterol in Japanese patients with COPD. METHODS: This Phase-II, randomised, placebo-controlled, crossover study comprised four double-blind, single-dose treatment periods (washout between periods: 14-28 days). Japanese patients aged 40-75 years with moderate-to-severe COPD were randomised to receive single doses of indacaterol (150, 300, or 600 microg) or placebo via a single-dose dry-powder inhaler. Efficacy (primary endpoint: standardised FEV(1)AUC(22-24h)) and safety were assessed for 24 h post-dose in each treatment period. RESULTS: Of the 50 patients randomised (92% male; mean age, 67.2 years), 45 completed the study. Standardised FEV(1)AUC(22-24h) was significantly higher for all indacaterol doses as compared with placebo, with clinically relevant differences of 130, 160, and 170 mL for 150, 300, and 600 microg, respectively (P < 0.001). The improvement in FEV(1) was seen as early as 5 min post-dose with indacaterol and sustained for 24 h (P < 0.001 vs placebo at all time points). All indacaterol doses were well tolerated and showed no clinically meaningful effect on pulse rate, blood pressure, QTc interval, and laboratory parameters when compared with placebo. CONCLUSIONS: In the Japanese COPD population studied, single doses of indacaterol (150, 300, and 600 microg) provided sustained 24-h bronchodilation, with onset of action within 5 min post-dose. All doses were well tolerated. These results are consistent with data from Caucasian populations.
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