For the diagnosis of ABPA, a type of allergy with components of a type I, type III and type IV reaction, which is usually (co-)caused by A. fumigatus, the determination of A. fumigatus-specific IgE as well as the determination of total IgE and A. fumigatus-specific IgG is useful (see specific IgG determination). This evidence concerns the gene IGHE and allergic bronchopulmonary aspergillosis.