GSK573719 Dose Ranging Study in Chronic Obstructive Pulmonary Disease

A Randomized, Double-Blind, Placebo-Controlled, 3-Way Cross-Over Study to Evaluate the Safety, Efficacy, and Pharmacokinetics of GSK573719 Administered Once- and Twice-Daily in Subjects With COPD

The study will evaluate the dose response, safety, and pharmacokinetics of GSK573719 compared with placebo in subjects with COPD.

This is multicenter, randomized, double-blind, double-dummy, placebo-controlled, three-way cross-over, incomplete block design study to evaluation of 5 doses of GSK573719 administered once-daily and 3 doses of GSK573719 administered twice-daily over 14 days in subjects with COPD and will include tiotropium as an open-label active control. The pharmacokinetic profile of GSK573719 will also be evaluated.

Inclusion Criteria:

• A signed and dated written informed consent prior to study participation
• Males or females of non-childbearing potential
• 40 to 80 years of age
• COPD diagnosis
• 10 pack-years history or greater of cigarette smoking
• Post-bronchodilator FEV1/FVC ratio of 0.70 or less
• Post-bronchodilator FEV1 of 35 to 70% of predicted normal

Exclusion Criteria:

• Asthma
• Other significant respiratory disorders besides COPD, including alpha-1 deficiency
• Previous lung resection surgery
• Use of oral steroids or antibiotics for a COPD exacerbation within 6 weeks of screening
• Hospitalization for COPD or pneumonia within 3 months of screening
• Any significant disease that would put subject at risk through study participation
• BMI greater than 35
• Pacemaker
• Significantly abnormal ECG, Holter, or clinical lab finding (including Hepatitis B or C)
• Cancer
• Allergy or hypersensitivity to anticholinergics or inhaler excipients
• Diseases that would contra-indicate the use of anticholinergics
• Use of oral corticosteroids within 6 weeks of screening
• Use of long-acting beta-agonists within 48 hours of screening
• Use of tiotropium within 14 days of screening
• Use of theophyllines or anti-leukotrienes within 48 hours of screening
• Use of short-acting bronchodilators within 4 to 6 hours of screening
• Use of investigational medicines within 30 days of screening
• Use of high dose inhaled corticosteroids
• Use of long-term oxygen therapy, CPAP or NIPPV
• Previous use of GSK573719