A 6-month Study to Evaluate the Efficacy and Safety of Fluticasone Furoate (FF)/GW642444 Inhalation Powder in Subjects With Chronic Obstructive Pulmonary Disease (COPD)

Inclusion Criteria

• Type of subject: outpatient
• Informed consent: Subjects must give their signed and dated written informed consent to participate.
• Gender: Male or female subjects A female is eligible to enter and participate in the study if she is of:
• Non-child bearing potential OR
• Child bearing potential, has a negative pregnancy test at screening, and agrees to one of the acceptable contraceptive methods defined in the protocol
• Age: ≥40 years of age at Screening (Visit 1)
• COPD diagnosis: Subjects with a clinical history of COPD in accordance with the definition by the American Thoracic Society/European Respiratory Society [Celli, 2004]
• Tobacco use: Subjects with a current or prior history of ≥10 pack-years of cigarette smoking at Screening (Visit 1).
• Severity of Disease: Subjects with a Screening (Visit 1) measured post-albuterol/salbutamol:
• FEV1/FVC ratio of ≤0.70 and
• FEV1 ≤70% of predicted normal values
• Dyspnea: Achieved a score of ≥2 on the Modified Medical Research Council Dyspnea Scale (mMRC) at Screening (Visit 1).

Exclusion Criteria

Subjects meeting any of the following criteria must not be enrolled in the study:

• Pregnancy: Women who are pregnant or lactating or are planning on becoming pregnant during the study.
• Asthma: Subjects with a current diagnosis of asthma
• α1-antitrypsin deficiency: Subjects with α1-antitrypsin deficiency as the underlying cause of COPD
• Other respiratory disorders: Subjects with active tuberculosis, lung cancer, bronchiectasis, sarcoidosis, lung fibrosis, pulmonary hypertension, interstitial lung diseases, or other active pulmonary diseases
• Lung resection: Subjects with lung volume reduction surgery within the 12 months prior to Screening (Visit 1)
• Chest X-ray (or CT scan): Subjects with a chest X-ray (or CT scan) that reveals evidence of clinically significant abnormalities not believed to be due to the presence of COPD.
• Hospitalization: Subjects who are hospitalized due to poorly controlled COPD within 12 weeks of Visit 1.
• Poorly controlled COPD: Subjects with poorly controlled COPD, defined as the occurrence of the following in the 6 weeks prior to Visit 1: Acute worsening of COPD that is managed by subject with corticosteroids or antibiotics or that requires treatment prescribed by a physician.
• Lower respiratory tract infection: Subjects with lower respiratory tract infection that required the use of antibiotics within 6 weeks prior to Visit 1.
• Other diseases/abnormalities: Subjects with historical or current evidence of clinically significant cardiovascular (i.e., pacemaker), neurological, psychiatric, renal, hepatic, immunological, endocrine (including uncontrolled diabetes or thyroid disease) or haematological abnormalities that are uncontrolled.
• Peptic Ulcer disease: Subjects with clinically significant peptic ulcer disease that is uncontrolled.
• Hypertension: Subjects with clinically significant hypertension that is uncontrolled.
• Cancer: Subjects with carcinoma that has not been in complete remission for at least 5 years. Carcinoma in situ of the cervix, squamous cell carcinoma and basal cell carcinoma of the skin would not be excluded if the subject has been considered cured within 5 years since diagnosis.
• Drug/food allergy: Subjects with a history of hypersensitivity to any of the study medication or components of the inhalation powder
• Drug/alcohol abuse: Subjects with a known or suspected history of alcohol or drug abuse within the last 2 years
• Medication prior to spirometry: Subjects who are medically unable to withhold their albuterol/salbutamol and/or their ipratropium 4 hours prior to spirometry testing at each study visit
• Additional medication: Use of certain medications such as bronchodilators and corticosteroids for the protocol-specified times prior to Visit 1 (the Investigator will discuss the specific medications)
• Oxygen therapy: Subjects receiving treatment with long-term oxygen therapy (LTOT) or nocturnal