The frequency of fusions was also high in desmoplastic small round cell tumors (77.8%; 7 of 9 samples) and in dermatofibrosarcoma protuberans (100%; 4 of 4 samples), driven by EWSR1 or COL1A1 fusions, respectively. Here, COL1A1 is linked to dermatofibrosarcoma protuberans.