Central Epithelioid Sarcoma, also known as proximal-type epithelioid sarcoma, is related to central nervous system angiosarcoma and proliferative fasciitis. An important gene associated with Central Epithelioid Sarcoma is SMARCB1 (SWI/SNF Related, Matrix Associated, Actin Dependent Regulator Of Chromatin, Subfamily B, Member 1), and among its related pathways/superpathways are Class I MHC mediated antigen processing and presentation and Keratinization. Related phenotype is Reduced mammosphere formation.