Identification of Sub-Phenotypes of Eosinophilic Asthma: Eosinophilic Asthma Is Not Always Allergic Asthma

We hypothesized that distinct subgroups exist within eosinophilic asthmatics that might explain the disparate observations that some eosinophilic asthmatics have severe disease and poor treatment responses, while others respond well to glucocorticoids.