In another study,42 an array CGH analysis was performed on 23 USMTs (14 STUMPs, 5 LMSs, 3 leiomyomas, and 1 undifferentiated sarcoma), suggesting that the PRKDC and PUM2 genes may have a prognostic role. This evidence concerns the gene PRKDC and undifferentiated (embryonal) sarcoma.