IGHE and asthma: We identified a trend towards a negative correlation between the numbers of baseline type I cDCs in BAL and total serum IgE at baseline (p = .051, r = −.41) (Figure 3A and Table S4), and a significant relationship between type I cDCs in BAL at D3 and baseline levels of both Der p1‐ (p = .016, r = −.72) and Der p2‐specific serum IgE (p = .029, r = −.67) in asthma patients (Figure 3B,C).