Experimental
FF/UMEC/VI 100/62.5/25 mcg closed triple therapy
Subjects will receive FF/UMEC/VI 100/62.5/25 mcg inhalation powder via ELLIPTA, once daily, 1 puff/time, in the morning. Subjects may receive salbutamol as a rescue medication when needed throughout the run-in and treatment period.
Drug :
FF/UMEC/VI 100/62.5/25 mcg
Subjects will self-administer the study treatment via the ELLIPTA device. The ELLIPTA holds 2 individual blister strips with 30 blisters on each strip: the first strip contains FF 100 mcg in each blister and the second strip contains UMEC 62.5 mcg and VI 25 mcg in each blister. ELLIPTA is a registered trademark of GSK groups of companies.
Experimental
FF/UMEC/VI 100/62.5/25 mcg closed triple therapy
Subjects will receive FF/UMEC/VI 100/62.5/25 mcg inhalation powder via ELLIPTA, once daily, 1 puff/time, in the morning. Subjects may receive salbutamol as a rescue medication when needed throughout the run-in and treatment period.
Drug :
Salbutamol
Salbutamol is a rescue medication administered via metered-dose inhaler (MDI) which will be used when needed during the study.
Experimental
FF/UMEC/VI 100/62.5/25 mcg closed triple therapy
Subjects will receive FF/UMEC/VI 100/62.5/25 mcg inhalation powder via ELLIPTA, once daily, 1 puff/time, in the morning. Subjects may receive salbutamol as a rescue medication when needed throughout the run-in and treatment period.
Other :
ACQ-7
ACQ-7 will be used for the assessment of control status of asthma.
Experimental
FF/UMEC/VI 200/62.5/25 mcg closed triple therapy
Subjects will receive FF/UMEC/VI 200/62.5/25 mcg inhalation powder via ELLIPTA, once daily, 1 puff/time, in the morning. Subjects may receive salbutamol as a rescue medication when needed throughout the run-in and treatment period.
Other :
ACQ-7
ACQ-7 will be used for the assessment of control status of asthma.
Experimental
FF/UMEC/VI 200/62.5/25 mcg closed triple therapy
Subjects will receive FF/UMEC/VI 200/62.5/25 mcg inhalation powder via ELLIPTA, once daily, 1 puff/time, in the morning. Subjects may receive salbutamol as a rescue medication when needed throughout the run-in and treatment period.
Drug :
FF/UMEC/VI 200/62.5/25 mcg
Subjects will self-administer the study treatment via the ELLIPTA device. The ELLIPTA holds 2 individual blister strips with 30 blisters on each strip: the first strip contains FF 200 mcg in each blister and the second strip contains UMEC 62.5 mcg and VI 25 mcg in each blister. ELLIPTA is a registered trademark of GSK groups of companies.
Experimental
FF/UMEC/VI 200/62.5/25 mcg closed triple therapy
Subjects will receive FF/UMEC/VI 200/62.5/25 mcg inhalation powder via ELLIPTA, once daily, 1 puff/time, in the morning. Subjects may receive salbutamol as a rescue medication when needed throughout the run-in and treatment period.
Drug :
Salbutamol
Salbutamol is a rescue medication administered via metered-dose inhaler (MDI) which will be used when needed during the study.
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