Evaluation of Umeclidinium Bromide in Combination With Fluticasone Furoate in COPD Subjects With an Asthmatic Component

The purpose of this study is to evaluate the dose-response of 4 doses of umeclidinium bromide in combination with fluticasone furoate compared with fluticasone furoate monotherapy in chronic obstructive pulmonary disease participants with an asthmatic component. The fluticasone furoate/umeclidinium bromide treatments will also be compared to the once-daily inhaled corticosteroid/long-acting beta agonist combination fluticasone furoate/vilanterol.