A Long-term Safety Study of QMF149 in Japanese Participants With Asthma

Inclusion Criteria: * Written informed consent must be obtained before any assessment is performed. * Male and female adult patient ≥ 18 years old. * Patients with a diagnosis of persistent asthma for a period of at least 1 year prior to Visit 1. * Patients who have used medium or high dose inhaled corticosteroids (ICS) plus at least 1 controller for asthma for at least 3 months and at stable dose and regimen for at least 4 weeks prior to Visit 1. * Patients must have Asthma Control Questionnaire-7 (ACQ-7) score ≥ 1.5 at Visits 2 and qualify for treatment with high dose ICS/long-acting β2 agonist (LABA). * Pre-bronchodilator Forced Expiratory Volume in 1 second (FEV1) of ≥ 50% and ≤ 85% of the predicted normal value for the patient after withholding bronchodilators at Visit 2. * Repeating is allowed once only. Repeating of percentage predicted FEV1 should be done in an ad-hoc visit to be scheduled on a date that would provide sufficient time to receive confirmation from the spirometry data central reviewer of the validity of the assessment before Visit 99. * Patients must demonstrate reversibility defined as an increase in FEV1 of ≥ 12% and 200 mL within 15 to 30 minutes after administration of 400 µg of salbutamol at Visit 2. Spacer devices are permitted during reversibility testing only. The Investigator or delegate may decide whether or not to use a spacer for the reversibility testing. * If reversibility is not proven at Visit 2, patients may be permitted to enter the…