PF-03635659 is being developed for the treatment of chronic obstructive pulmonary disease. This is a study to examine the safety, pharmacokinetics and pharmacodynamics of PF-03635659 in patients with Chronic Obstructive Pulmonary Disease (COPD).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
22
oral inhaled formulation, single dose
oral inhaled formulation, single dose
oral inhaled formulation, single dose, low dose
Pfizer Investigational Site
Berlin, Germany
Change From Baseline in Trough Forced Expiratory Volume in 1 Second (FEV1)
FEV1 was the mean volume of air that can be forced out in 1 second after taking a deep breath. Trough FEV1 was calculated as the average of the largest FEV1 value from 3 readings recorded at 24 hours (hrs) and 24.5 hrs post-dose. Baseline FEV1 value was calculated as average of 2 largest pre-dose readings on Day 1 for each period. Change from baseline in trough FEV1 was the difference between trough FEV1 and baseline FEV1.
Time frame: Baseline, 24, 24.5 hrs post-dose
Maximum Observed Plasma Concentration (Cmax)
Time frame: 1 hr pre-dose, 0.5, 1, 2, 4, 8, 12, 24, 36, 48 hrs post-dose
Dose Normalized Maximum Observed Plasma Concentration
Cmax was normalized to a 1 mcg fine particle dose (40, 128 and 320 mcg for the nominal doses of 180, 580 and 1450 mcg respectively).
Time frame: 1 hr pre-dose, 0.5, 1, 2, 4, 8, 12, 24, 36, 48 hrs post-dose
Time to Reach Maximum Observed Plasma Concentration (Tmax)
Time frame: 1 hr pre-dose, 0.5, 1, 2, 4, 8, 12, 24, 36, 48 hrs post-dose
Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast)
Area under the plasma concentration time-curve from zero to the last measured concentration (AUClast).
Time frame: 1 hr pre-dose, 0.5, 1, 2, 4, 8, 12, 24, 36, 48 hrs post-dose
Dose Normalized Area Under the Curve From Time Zero to Last Quantifiable Concentration
Area under the plasma concentration time-curve from zero to the last measured concentration (AUClast). AUClast was normalized to a 1 mcg fine particle dose (40, 128 and 320 mcg for the nominal doses of 180, 580 and 1450 mcg respectively).
Time frame: 1 hr pre-dose, 0.5, 1, 2, 4, 8, 12, 24, 36, 48 hrs post-dose
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oral inhaled formulation, single dose, mid dose
oral inhaled formulation, single dose, high dose
Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC(0-∞)]
AUC (0-∞) = Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0-∞). It was obtained from AUC (0 - t) plus AUC (t-∞).
Time frame: 1 hr pre-dose, 0.5, 1, 2, 4, 8, 12, 24, 36, 48 hrs post-dose
Dose Normalized Area Under the Curve From Time Zero Extrapolated to Infinite Time
AUC (0-∞) = Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0-∞). It was obtained from AUC (0 - t) plus AUC (t-∞). AUC (0-∞) was dose normalized to a 1 mcg fine particle dose (40, 128 and 320 mcg for the nominal doses of 180, 580 and 1450 mcg respectively).
Time frame: 1 hr pre-dose, 0.5, 1, 2, 4, 8, 12, 24, 36, 48 hrs post-dose
Plasma Decay Half-Life (t1/2)
Plasma decay half-life is the time measured for the plasma concentration to decrease by one half.
Time frame: 1 hr pre-dose, 0.5, 1, 2, 4, 8, 12, 24, 36, 48 hrs post-dose
Peak Forced Expiratory Volume in 1 Second (FEV1)
FEV1 was the mean volume of air that can be forced out in 1 second after taking a deep breath. Peak FEV1 was defined as change from baseline in maximum FEV1. Maximum FEV1 = maximum forced expiratory volume in 1 second, recorded between 0.5 hrs to 48 hrs post-dose. Baseline FEV1 value was calculated as average of two largest pre-dose readings on Day 1 for each period.
Time frame: Baseline up to 48 hrs post-dose
Weighted Average Forced Expiratory Volume in 1 Second (FEV1) Response
FEV1 was the mean volume of air that can be forced out in 1 second after taking a deep breath. Weighted average FEV1 was defined as the average area under the effect curve (AUEC) change from baseline FEV1 (the area under the FEV1 effect curve over 24.5 hrs post-dose for each study period corrected for the pre-dose baseline value) divided by 24.5. Baseline FEV1 value was calculated as the average of two largest pre-dose readings on Day 1 for each period.
Time frame: Baseline up to 24.5 hrs post-dose
Change From Baseline in Force Vital Capacity (FVC)
FVC was the maximum amount of air exhaled from the lungs after taking the deepest breath possible. Baseline FVC value was calculated as average of two largest pre-dose readings on Day 1 for each period. Change from baseline in FVC was the difference between FVC and baseline FVC.
Time frame: Baseline, 0.5, 1, 2, 4, 6, 8, 10, 12, 16, 24, 24.5, 36, 48 hrs post-dose
Change From Baseline in Inspiratory Capacity (IC)
IC was the maximum volume of air that can be inhaled in to the lungs after breathing out normally. Baseline IC value was calculated as average of two largest pre-dose readings on Day 1 for each period. Change from baseline in IC was the difference between IC and baseline IC.
Time frame: Baseline, 0.5, 1, 2, 4, 6, 8, 10, 12, 16, 24, 24.5, 36, 48 hrs pot-dose