IGHE and allergic asthma: Allergic asthma is a chronic inflammatory disease of the lung associated with excessive airway infiltration of inflammatory cells into lung tissues, elevated levels of allergen-specific immunoglobulin E (IgE), overexpression of T-helper type 2 (Th2) cytokines and chemokine including IL-4, IL-5, IL-13, and eotaxin [1].