A Phase II Study to Investigate Lung Function With 2 Different Doses of Inhaled Glycopyrronium Taken With BFF Compared to BFF in Participants of 4 to Less Than 12 Years of Age With Asthma

Main Inclusion Criteria:

* Participants who have a documented history of physician-diagnosed asthma
* Participants who have been using a stable and regular inhaled corticosteroid plus one additional asthma controller medication.
* Participants must have a Childhood Asthma Control Test score ≥ 19.
* Participants must have a pre-bronchodilator FEV1 ≤ 95% of predicted normal value.
* Body mass index (BMI) ≤ 95 percentile for age and body weight of ≥ 14 kg or higher.
* Female participants who experience menarche must have a negative urine pregnancy test.
* Received no asthma medication other than run-in BFF MDI BID and albuterol/salbutamol as needed.

Main Exclusion Criteria:

* Life-threatening asthma defined as a history of significant asthma episode(s) requiring intubation associated with hypercapnia, respiratory arrest, hypoxic seizures, or asthma-related syncopal episode(s).
* Historical or current evidence of a clinically significant disease including, but not limited to cardiovascular, hepatic, renal, hematological, neurological, endocrine, gastrointestinal, or pulmonary.
* Any clinically relevant abnormal findings in physical examination, clinical chemistry, hematology, vital signs, or ECG.
* Hospitalization for asthma
* Narrow-angle glaucoma not adequately treated and/or change in vision, bladder dysfunction, bladder outlet obstruction/urinary retention or any other conditions where anticholinergic treatment is contraindicated and may be relevant.
* Use of Long-acting muscarinic antagonist (LAMA), either alone or as part of an inhaled combination therapy.
* Current use of any systemic beta-blockers.
* Respiratory infection involving antibiotic treatment.
* Systemic corticosteroid use for any reason (including asthma exacerbations).
* Participants with a known hypersensitivity to beta 2-agonists, corticosteroids, anticholinergics, or any component of the MDI.
* Participants who are medically unable to withhold their short-acting bronchodilators and other asthma medications.
* Any use of marketed (eg, omalizumab, mepolizumab, benralizumab, reslizumab) or investigational biologic.
* Regular use of a nebulizer or a home nebulizer for receiving asthma medications.
* Use of any immunomodulators or immunosuppressive medication.