A Study to Compare the Efficacy, Safety and Tolerability of FF/UMEC/VI With FF/VI in 12-17-year-olds With Asthma

Inclusion Criteria:

• Participant must be 12 to 17 years of age (inclusive), at the time of signing theinformed consent/assent.

• Participants who have a diagnosis of asthma as defined by the National Institutes ofHealth [NIH, 2020] at least 1 year prior to Visit 0.

• Participants who have required daily Inhaled corticosteroids (ICS)/ Long-ActingBeta2-Agonist (LABA) treatment for at least 12 weeks prior to Visit 0 with nochanges to maintenance asthma medications during the 6 weeks immediately prior toVisit 0 (including no changes to a stable total ICS dose of >250 to <=500 microgram (mcg)/day fluticasone propionate, or equivalent).

• In the 1 year prior to Visit 1: A documented healthcare contact for acute asthmasymptoms; OR A documented temporary change in asthma therapy for acute asthmasymptoms, according to a prespecified asthma action plan (or equivalent).

• Participants with inadequately controlled asthma (ACQ-6 score ≥1.5) at Visit 1,despite ICS/LABA maintenance therapy.

• A best pre-bronchodilator FEV1 >40% to <=90% of the predicted normal value and a ≥12% increase in FEV1 with albuterol/salbutamol at Visit 1. Predicted values will bebased on the European Respiratory Society (ERS) Global Lung Function Initiative.

Exclusion Criteria:

• Chest X-ray documented pneumonia in the 6 weeks prior to Visit 1.

• Any asthma exacerbation requiring a change in maintenance asthma therapy and/or theuse of systemic corticosteroids for at least 3 days in the 6 weeks prior to Visit 1. (Participants requiring a temporary change in asthma therapy (e.g., oralcorticosteroids or increased dose of ICS) to treat an exacerbation in the 6 weeksprior to Visit 1 are not explicitly excluded at Visit 1 provided that, at theInvestigator's discretion, the participant's condition is stable after they haveresumed their pre-exacerbation maintenance asthma therapy (without modification),returned to their baseline asthma status and they are considered appropriate forenrollment into this study of up to 6 months duration)

• History of Life-threatening Asthma

• Participants with current evidence of active pulmonary diseases or abnormalitiesother than asthma (e.g., pneumonia, active tuberculosis, significant bronchiectasis,etc.).

• Current smokers and users of other inhaled products for recreation with or withoutnicotine (defined as participants who use cigarettes, e-cigarettes,other/vaping-related devices, cigars or pipe tobacco]) within 12 months prior toVisit 1.