Increased IL-17 levels were associated with the presence of allergic rhinitis (0.017 pg/mL [IQR, 0.0065-0.043 pg/mL] if present and 0.005 pg/mL [IQR, 0.0033-0.010 pg/mL] if absent, P = .02), with airway eosinophilia (rs = 0.34, P = .04) and high serum IgE levels (rs = 0.42, P = .007; see Fig E4, C). Here, IGHE is linked to allergic rhinitis.