Immunodeficiency 39, also known as imd39, is related to immunodeficiency 28 and herpangina. An important gene associated with Immunodeficiency 39 is IRF7 (Interferon Regulatory Factor 7), and among its related pathways/superpathways are Antiviral mechanism by IFN-stimulated genes and Toll-like receptor signaling pathway. Related phenotypes are severe influenza infection and immunodeficiency