A randomized, double-blind dose-ranging study of the novel LAMA GSK573719 in patients with COPD

James F. Donohue, Antonio Anzueto, Jean Brooks, Rashmi Mehta, Christopher Kalberg, Glenn Crater

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

Background: This study evaluated the dose-response and dosing interval of the novel long-acting muscarinic receptor antagonist (LAMA) GSK573719 in patients with COPD. Methods: This randomized, double-blind, placebo-controlled, 3-way cross-over, incomplete block study evaluated 5 once-daily doses of GSK573719 (62.5-1000 μg), 3 twice-daily doses (62.5-250 μg), and open-label tiotropium for 14 days in patients (N = 176) with COPD (FEV 1 of 35-70% predicted). The primary endpoint was morning trough FEV 1 at Day 15. Secondary endpoints included 0-24 h weighted mean FEV 1 and serial FEV 1 values over 28 h. Safety measures and pharmacokinetics were assessed. Results: All once-daily doses of GSK573719 significantly increased trough FEV 1 at Day 15 with improvements ranging from 95 to 186 mL over placebo (p ≤ 0.006), from 79 to 172 mL with twice-daily dosing (p ≤ 0.03), and 105 mL with tiotropium (p = 0.003). No clear dose ordering was observed. Once-daily doses significantly (p < 0.001) increased 0-24 h weighted mean FEV 1 at Day 14 by 131-143 mL over placebo, comparable to increases with the twice-daily doses (120-142 mL) and tiotropium (127 mL). Significant reductions in rescue albuterol use and improvements in FVC were also observed with once-daily dosing. Plasma C max occurred within 5-15 min of dosing after which the drug was rapidly cleared and eliminated. GSK573719 was well tolerated, with no apparent treatment-related changes in vital signs, ECG and Holter assessments, or clinical laboratory parameters. Conclusion: Once-daily dosing with GSK573719 in COPD provides clinically significant and sustained improvement in lung function over 24 h with similar efficacy to twice-daily dosing.

Original languageEnglish (US)
Pages (from-to)970-979
Number of pages10
JournalRespiratory Medicine
Volume106
Issue number7
DOIs
StatePublished - Jul 2012

Keywords

  • Anticholinergic
  • Chronic obstructive pulmonary disease
  • GSK573719
  • Long-acting bronchodilator
  • Long-acting muscarinic receptor antagonist

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

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