A Randomized, Placebo-controlled, Dose-ranging, Multi-centre Trial of QAW039 (1-450 mg p.o.), to Investigate the Effect on FEV1 and ACQ in Patients With Moderate-to-severe, Persistent, Allergic Asthma, Inadequately Controlled With ICS Therapy.

This study aims to demonstrate a clinically significant improvement in Forced Expiratory Volume in one second (FEV1) in moderate to severe allergic asthmatics inadequately controlled by Inhaled Corticosteroid (ICS) therapy. Patients will be treated with QAW039, an active comparator, or placebo. This will be a randomized, placebo-controlled, dose-ranging, multi-centre trial.