It has been reported that the ability of OVA pepsin hydrolysate with intact OVA to treat egg allergies in BALB/c mice expressed better therapeutic protection against egg allergies by inducing regulatory cells (Tregs) and upregulating the expression of TGF-β, IL-10, IL-17, Foxp3, and RORγt in the intestinal tissues (Lozano-Ojalvo et al., 2017). The gene discussed is IL17A; the disease is egg allergy.