Based on an enzyme-linked immunosorbent assay (ELISA), Glaser et al. (2009) showed that 94 % of ABPA patients (n = 64) and 46 % of A. fumigatus-sensitized asthmatics (n = 24) had Asp f 34-specific serum IgE [120]. Here, IGHE is linked to allergic bronchopulmonary aspergillosis.