IGHE and asthma: RN-sIgE was significantly correlated with total IgE (Rho = 0.76), D. pteronyssinus-sIgE (Rho = 0.67), D. farinae-sIgE (Rho = 0.67), blood eosinophil count (BEC, Rho = 0.26), fractional exhaled nitric oxide (FeNO, Rho = 0.20), and Childhood Asthma Control Test (C-ACT, Rho = −0.17).