Granulomatous Disease, Chronic, Autosomal Recessive, 4, also known as granulomatous disease, chronic, autosomal recessive, cytochrome b-negative, is related to aspergillosis and ileocolitis. An important gene associated with Granulomatous Disease, Chronic, Autosomal Recessive, 4 is CYBA (Cytochrome B-245 Alpha Chain), and among its related pathways/superpathways are RAC1 GTPase cycle and G-protein signaling RAC1 in cellular process. Affiliated tissues include bone marrow and liver, and related phenotypes are splenomegaly and hepatomegaly