IGHE and asthma: Positive correlations were seen between ITLN-1 mRNA expression in the distal BECs and FeNO and IgE in SN-Asthma patients (Fig. 2a: r = 0.84, p < 0.0001, N = 16 and b: r = 0.79 p = 0.0002, N = 16, respectively).