A Study to Evaluate the Efficacy and Safety of Umeclidinium Bromide/Vilanterol Compared With Fluticasone Propionate/Salmeterol Over 12 Weeks in Subjects With Chronic Obstructive Pulmonary Disease (COPD)

Inclusion Criteria

• Type of subject: Outpatient
• Informed Consent: A signed and dated written informed consent prior to study participation
• Age: Subjects 40 years of age or older at Visit 1
• Gender: Male or female subjects. A female is eligible to enter and participate in the study if she is of: Non-child bearing potential (i.e. physiologically incapable of becoming pregnant, including any female who is post-menopausal or surgically sterile); or Child bearing potential, has a negative pregnancy test at screening, and agrees to one of the acceptable contraceptive methods listed in the protocol used consistently and correctly
• Diagnosis: established clinical history of COPD in accordance with the definition by the American Thoracic Society/European Respiratory Society as follows: Chronic obstructive pulmonary disease is a preventable and treatable disease state characterized by airflow limitation that is not fully reversible. The airflow limitation is usually progressive and is associated with an abnormal inflammatory response of the lungs to noxious particles or gases, primarily caused by cigarette smoking. Although COPD affects the lungs, it also produces significant systemic consequences.
• Smoking history: Current or former cigarette smokers with a history of cigarette smoking of >=10 pack-years [number of pack years = (number of cigarettes per day/20) x number of years smoked (e.g., 20 cigarettes per day for 10 years, or 10 cigarettes per day for 20 years)]. Previous smokers are defined as those who have stopped smoking for at least 6 months prior to Visit 1. Pipe and/or cigar smoking cannot be used to calculate pack year history.
• Severity of disease: A pre and post-salbutamol FEV1/FVC ratio of =30% and =2 on the Modified Medical Research Council Dyspnea Scale (mMRC) at Visit 1.

Exclusion Criteria

• Pregnancy: Women who are pregnant or lactating or are planning on becoming pregnant during the study
• Asthma: A current diagnosis of asthma
• Other Respiratory Disorders: Known alpha-1 antitrypsin deficiency, active lung infections (such as tuberculosis), and lung cancer are absolute exclusionary conditions. A subject, who, in the opinion of the investigator, has any other significant respiratory condition in addition to COPD should be excluded. Examples may include clinically significant bronchiectasis, pulmonary hypertension, sarcoidosis, or interstitial lung disease. Inactive tuberculosis in more than one lobe is exclusionary. Allergic rhinitis is not exclusionary.
• Other Diseases/Abnormalities: Subjects with historical or current evidence of clinically significant cardiovascular, neurological, psychiatric, renal, hepatic, immunological, endocrine (including uncontrolled diabetes or thyroid disease) or hematological abnormalities that are uncontrolled and/or a previous history of cancer in remission for <5 years prior to Visit 1 (localized carcinoma of the skin that has been resected for cure is not exclusionary). Significant is defined as any disease that, in the opinion of the investigator, would put the safety of the subject at risk through participation, or which would affect the efficacy or safety analysis if the disease/condition exacerbated during the study.
• Contraindications: A history of allergy or hypersensitivity to any anticholinergic/muscarinic receptor antagonist, beta2-agonist, corticosteroid, lactose/milk protein or magnesium stearate or a medical condition such as narrow-angle glaucoma, prostatic hypertrophy or bladder neck obstruction that, in the opinion of the study physician contraindicates study participation or use of an inhaled anticholinergic.
• Hospitalization: Hospitalization for pneumonia within 12 weeks prior to Visit 1
• History of COPD Exacerbation: A documented history of at least one COPD exacerbation in the 12 months prior to Visit 1 that required either oral corticosteroids, antibiotics, and/or hospitalization. Prior use of antibiotics alone does not qualify as an exacerbati