Immunodeficiency 32a, also known as mendelian susceptibility to mycobacterial diseases due to partial irf8 deficiency, is related to cauda equina syndrome and lice infestation. An important gene associated with Immunodeficiency 32a is IRF8 (Interferon Regulatory Factor 8). Affiliated tissues include myeloid, and related phenotypes are fever and abnormality of immune system physiology