Chronic rhinosinusitis (CRS) is characterized by the presence of high levels of T helper (Th) cytokines and polypoid CRS (CRSwNP) is characterized by type 2 inflammation with high levels of Th2 cytokines including IL‐5 and IL‐13 1, 2, 3. The gene discussed is IL13; the disease is chronic rhinosinusitis with nasal polyps.