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A dose-ranging study of indacaterol in obstructive airways disease, with a tiotropium comparison.

Rennard, Stephen, Bantje, Theo, Centanni, Stefano, Chanez, Pascal, Chuchalin, Alexander, D'Urzo, Anthony, Kornmann, Oliver, Perry, Sheryl, Jack, Damon, Owen, Roger and Higgins, Mark (2008) A dose-ranging study of indacaterol in obstructive airways disease, with a tiotropium comparison. Respiratory Medicine, 102 (7). pp. 1033-1044. ISSN 0954-6111


This dose-ranging study assessed the bronchodilator efficacy and tolerability of indacaterol, a novel once-daily inhaled beta2-agonist, in subjects clinically diagnosed with COPD. Comparative data with tiotropium were collected. In the double-blind, core period of the study, 635 subjects with COPD (prebronchodilator FEV(1)40% of predicted and > or =1.0L; FEV1/FVC <70%) were randomized to receive indacaterol 50, 100, 200 or 400microg or placebo via multi-dose dry powder inhaler, or indacaterol 400microg via single-dose dry powder inhaler, once daily for 7 days. After completing double-blind treatment and washout, a subset of subjects from each treatment group entered an open-label extension and received tiotropium 18microg once daily for 8 days. The primary efficacy variable was the trough bronchodilator effect: standardized area under the FEV1 curve between 22 and 24h post-dose (FEV1 AUC(22-24h)) on Day 1. Clinically relevant improvements versus placebo in FEV1 AUC(22-24h) were seen for 400 and 200microg doses on Day 1 and all doses on Day 7. All indacaterol doses significantly (P<0.05) increased FEV1 from 5min to 24h post-dose; the 400 and 200microg doses were most effective. All doses were well tolerated. Indacaterol trough FEV1 levels compared favorably with the improvement seen by Day 8 in subjects treated with tiotropium in the open-label extension. The results confirm that indacaterol has a 24-h duration of bronchodilator effect and a fast onset of action in COPD and suggest that indacaterol could be an effective once-daily inhaled beta2-agonist bronchodilator. Indacaterol demonstrated a good overall safety and tolerability profile.

Item Type: Article
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Additional Information: author can archive post-print (ie final draft post-refereeing); Publisher's version/PDF cannot be used
Keywords: Indacaterol; COPD; Tiotropium; Efficacy; Safety; Dose
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Date Deposited: 14 Dec 2009 13:53
Last Modified: 31 Jan 2013 01:06