Conditions: Chronic Obstructive Pulmonary Disease
Keywords: chronic obstructive pulmonary disease COPD QAB149 indacaterol long acting β2-agonist
Allocation: RANDOMIZED | Intervention model: CROSSOVER
Enrollment: 50
Healthy volunteers: no

Brief summary:
The study was designed to obtain data about the efficacy and safety of 3 doses of indacaterol (150, 300, and 600 µg) in Japanese patients with chronic obstructive pulmonary disease (COPD) so that optimal dose(s) could be chosen for testing in later studies.

Detailed description:

Arms:
arm 1: In treatment period, 1 patients received 2 placebo capsules; in treatment period 2, patients received 1 indacaterol 150 μg capsule + 1 placebo capsule; in treatment period 3, patients received 1 indacaterol 300 μg capsule + 1 placebo capsule; and in treatment period 4, patients received 2 indacaterol 300 μg capsules. There was a washout period of 14-28 days between each treatment period. Patients received each treatment only once. The short-acting β2-agonist salbutamol was available for rescue use throughout the study. arm 2: In treatment period 1, patients received 1 indacaterol 150 μg capsule + 1 placebo capsule; in treatment period 2, patients received 2 indacaterol 300 μg capsules; in treatment period 3, patients received 2 placebo capsules; and in treatment period 4, patients received 1 indacaterol 300 μg capsule + 1 placebo capsule. There was a washout period of 14-28 days between each treatment period. Patients received each treatment only once. The short-acting β2-agonist salbutamol was available for rescue use throughout the study. arm 3: In treatment period 1, patients received 1 indacaterol 300 μg capsule + 1 placebo capsule; in treatment period 2, patients received 2 placebo capsules; in treatment period 3, patients received 2 indacaterol 300 μg capsules; and in treatment period 4, patients received 1 indacaterol 150 μg capsule + 1 placebo capsule. There was a washout period of 14-28 days between each treatment period. Patients received each treatment only once. The short-acting β2-agonist salbutamol was available for rescue use throughout the study. arm 4: In treatment period 1, patients received 2 indacaterol 300 μg capsules; in treatment period 2, patients received 1 indacaterol 300 μg capsule + 1 placebo capsule; in treatment period 3, patients received 1 indacaterol 150 μg capsule + 1 placebo capsule; and in treatment period 4 patients received 2 placebo capsules. There was a washout period of 14-28 days between each treatment period. Patients received each treatment only once. The short-acting β2-agonist salbutamol was available for rescue use throughout the study.

Interventions: intervention 1: Indacaterol 150 μg intervention 2: Indacaterol 300 μg intervention 3: Placebo
Intervention descriptions: intervention 1: Indacaterol 150 μg was provided in powder filled capsules with a single dose dry powder inhaler (SDDPI). intervention 2: Indacaterol 300 μg was provided in powder filled capsules with a single dose dry powder inhaler (SDDPI). intervention 3: Placebo to indacaterol was provided in powder filled capsules with a single dose dry powder inhaler (SDDPI).

Protocol document: