High affinity, selective glucocorticoid receptor agonist (Kd = 0.5 nM). Potently stimulates glucocorticoid receptor-mediated transactivation of gene expression and enhances human eosinophil apoptosis (EC50 = 3.7 nM) in vitro. Inhibits mast cell accumulation in nasal mucosa following topical administration. Lipophilic, clinically-used anti-inflammatory agent with low oral bioavailability.