Immunodeficiency with Hyper-Igm, Type 5, also known as hyper-igm syndrome type 5, is related to selective ige deficiency disease and transient hypogammaglobulinemia of infancy. An important gene associated with Immunodeficiency with Hyper-Igm, Type 5 is UNG (Uracil DNA Glycosylase), and among its related pathways/superpathways are Homology Directed Repair and DNA Damage. Affiliated tissues include lymph node and lung, and related phenotypes are lymphadenopathy and decreased circulating iga level