4.6 Article

A new class of bronchodilator improves Lung function in COPD: a trial with GSK961081

Journal

EUROPEAN RESPIRATORY JOURNAL
Volume 42, Issue 4, Pages 972-981

Publisher

EUROPEAN RESPIRATORY SOC JOURNALS LTD
DOI: 10.1183/09031936.00165712

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Funding

  1. GlaxoSmithKline

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GSK961081 is a bifunctional molecule demonstrating both muscarinic antagonist and beta-agonist activities. This was a 4-week, multicentre, randomised, double-blind, double-dummy, placebo and salmeterol controlled parallel group study. Doses ranging across three twice-daily doses and three once-daily doses were assessed in moderate and severe chronic obstructive pulmonary disease (COPD) patients. Trough forced expiratory volume in 1 s (FEV1) at day 29 was the primary end-point. At days 1 and 28, 12-h FEV1 spirometry was performed in all patients. A subset of patients underwent complete 24-h spirometry at day 28. The study recruited 436 patients. GSK961081 showed statistically and clinically significant differences from placebo in all doses and regimens for trough FEV1 on day 29 (155-277 mL). The optimal total daily dose was 400 mu g, either as 400 pig once daily or as 200 mu g twice daily, with an improvement in day 29 trough FEV1 of 215 mL and 249 mL, respectively. Other efficacy end-points also showed improvement. No effects were observed on glucose, potassium, heart rate, blood pressure and no dose response effect was seen on corrected QT elongation. This study showed that GSK961081 is an effective bronchodilator in COPD and appeared to be safe and well tolerated.

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