STAT6 and undifferentiated pleomorphic sarcoma: For example, SS18-SSX1/2/2B or NAB2-STAT6 fusion existed in SS, and ASPSCR1-TFE3 fusion in ASPS, whereas no/low fusion was detected in DLPS, pleomorphic liposarcomas, and undifferentiated pleomorphic sarcomas (UPSs) (Figure 2D and Table S2).