Overview The Effects of Montelukast on Smokers With Asthma Status: Completed Trial end date: 2011-05-01 Target enrollment: Participant gender: Summary The purpose of this study is: 1. To compare neutrophilia, eosinophilic inflammatory markers and asthma symptom indices between smokers and non-smokers. 2. To elucidate the mechanism by which cigarette smokers are resistant to corticosteroids. Phase: Phase 4 Details Lead Sponsor: Inje UniversityTreatments: FluticasoneLeukotriene AntagonistsMontelukastSalmeterol XinafoateXhance