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  • Title: Bronchodilator efficacy of indacaterol, a novel once-daily beta2-agonist, in patients with persistent asthma.
    Author: Pearlman DS, Greos L, LaForce C, Orevillo CJ, Owen R, Higgins M.
    Journal: Ann Allergy Asthma Immunol; 2008 Jul; 101(1):90-5. PubMed ID: 18681090.
    Abstract:
    BACKGROUND: Indacaterol is a novel once-daily inhaled beta2-agonist in development for the treatment of patients with asthma or chronic obstructive pulmonary disease. OBJECTIVE: To investigate the bronchodilator efficacy of indacaterol in patients with persistent asthma. METHODS: Patients received a randomized sequence of single doses of indacaterol, 400 microg, via single-dose dry powder inhaler (SDDPI); indacaterol, 200 microg, via multidose dry powder inhaler (MDDPI); and placebo. At each visit, the forced expiratory volume in 1 second (FEV1) was recorded at a series of time points during a 24-hour period. RESULTS: Of 33 patients screened, 25 were randomized to treatment. Adjusted mean FEV1 was significantly higher (P < or = .005) for both indacaterol doses vs placebo at most time points. The first time points at which statistically significant treatment differences were observed for indacaterol and placebo in FEV1 were 0.17 L at 5 minutes after dosing for 400 microg of indacaterol (SDDPI) and 0.21 L at 10 minutes for 200 microg of indacaterol (MDDPI) (both P < .001 vs placebo). Differences relative to placebo at the final time point, 24 hours after dosing, were 0.29 L and 0.15 L for indacaterol, 400 microg and 200 microg, respectively (both P < or = .003 vs placebo). Overall, FEV1 was significantly higher for the 400-microg dose compared with the 200-microg dose from 15 minutes to 2 hours after dosing (P < or = .013) and from 5 hours onward (P < or = .022). Indacaterol was associated with good tolerability and safety. CONCLUSIONS: Indacaterol demonstrates sustained bronchodilator efficacy throughout the full 24-hour period, with a rapid onset of action and a good overall safety profile.
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