BCOR and bone sarcoma: Because of the similarity of their genetic alterations, we also included eight samples of soft-tissues and bone sarcomas carrying a BCOR-rearrangement (two pediatric undifferentiated round cell soft tissue sarcomas (BCOR-ITD), two pediatric undifferentiated round cell bone sarcomas (BCOR-CCNB3) and one pediatric brain tumor (BCOR-ITD)] or an YWHAE-NUTM2 fusion (two pediatric undifferentiated round cell bone sarcomas).