A Phase II Randomised, Double-Blind, Placebo-Controlled, Parallel Group, Multicentre Study to Determine the Efficacy and Dose Response of Repeat Inhaled Doses of GW870086X on FEV1 in Adults With Persistent Asthma

This is a randomised, double-blind, placebo-controlled, parallel group study to determine the efficacy of twenty-seven day- repeat inhaled daily doses of GW870086X on forced expiratory volume in 1 second (FEV1). Initially there will be 3 treatment arms; placebo, 2mg GW870086X and 4mg GW870086X. After an interim analysis the trial may; continue to completion using the original doses, be terminated early, or have a fourth arm added of either 1mg GW870086X once daily or 3mg GW870086X once daily.