Food allergies can be classified into IgE-mediated, mixed IgE-, and cell-mediated (food allergy-associated atopic dermatitis, eosinophilic esophagitis, and other eosinophilic disorders), and non-IgE-mediated (food protein-induced enterocolitis syndrome, food protein-induced proctocolitis, food protein enteropathy) groups [16]. This evidence concerns the gene IGHE and food allergy.