Asthma Clinical Trial
Official title:
A Randomized, Double-blind, Placebo-controlled, Parallel Group Study to Compare GW766944 (an Oral CCR3 Receptor Antagonist) Versus Placebo in Patients With Asthma and Sputum Eosinophilia.
GW766994 is a selective, competitive antagonist of the human CC chemokine receptor-3 (CCR3). It is proposed that the inhibition of the CCR3 receptor may provide a treatment for airway inflammation such as in asthma. This will be a double-blind, placebo controlled, parallel group study being conducted to evaluate the effects of GW766994 in subjects with mild-moderate asthma who have high sputum eosinophilia. The primary objective is to compare the effects of GW766994 to placebo on sputum eosinophils.
This will be a multi-centre study. This is a randomized, double-blind, placebo-controlled,
parallel-group study, in patients with asthma and eosinophilic bronchitis. Subjects with
asthma will be atopic and not on oral prednisone. Inhaled corticosteroids are allowed if on
stable dose. All subjects will receive a 5 day course of 30mg daily of oral prednisone after
one week stopping study drug.
All subjects will attend screening (Visit 1) at which their eligibility for inclusion will be
assessed. Eligible subjects will be randomized to receive either 300 mg of GW766994 twice
daily or matching placebo at Day 1 (Visit 2) and will be stratified according to the
subject's sputum eosinophil count at Visit 1. Treatment will be 10 days of oral dosing, and
subjects will participate in a Day 7 or 8 visit (Visit 3), Day 10 visit (Visit 4 - End of
Treatment), followed by a 1 week wash out period (Visit 5 -Follow Up Visit). At Visit 5, all
subjects will be given 30 mg oral daily prednisone for 5 days and subjects to return to
clinic at a Post Oral Prednisone Visit (Visit 6) at Day 22.
Pharmacodynamic assessments will include both sputum and blood biomarkers and spirometry.
Safety will be assessed by vital sign measurement, electrocardiogram, clinical laboratory
tests (hematology, chemistry & urinalysis), clinical monitoring and adverse event reporting.
Pharmacokinetic samples will be collected from each subject according to the sample schedule
in the timing and events table.
Study will involved sputum biology (progenitors, cell counts). Study will be conducted in
Canada only.
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