- Treated with medium dose inhaled corticosteroid (ICS), or high dose ICS, or low dose ICS plus long- acting beta agonist (LABA), or low dose ICS plus leukotriene receptor antagonist (LTRA), or medium dose ICS plus LABA for at least 3 months prior to Visit 1 and the doses have been stable for at least 4 weeks prior to Visit 1.