Immunoglobulin E Concentration, Serum, also known as allergy and asthma susceptibility, is related to asthma and hypereosinophilic syndrome. An important gene associated with Immunoglobulin E Concentration, Serum is IGES (Immunoglobulin E Concentration, Serum). The drugs Histamine and Cimetidine have been mentioned in the context of this disorder. Affiliated tissues include prefrontal cortex and whole blood.