Fusions involving EWSR1 occur in other tumors, including desmoplastic small round cell tumor (EWSR1-WT1), clear cell sarcoma (EWSR1-ATF1), myxoid liposarcoma, extra-skeletal myxoid chondrosarcoma, and rare CNS tumors [23]. The gene discussed is EWSR1; the disease is desmoplastic small round cell tumor.