Although various food items can potentially induce immunoglobulin E (IgE)‐mediated food allergy, allergies to hen's egg and cow's milk allergens are the earliest to appear and most common food allergies in infants.1, 2 These food allergies often appear in the early stage of the allergic march,3 along with atopic dermatitis, and are associated with increased risks of anaphylaxis and asthma.4 The gene discussed is IGHE; the disease is food allergy.