Furthermore, we investigated seven cases of sarcoma with BCOR genetic alterations and four patients with CIC-rearranged sarcoma, which are new subsets of rare sarcomas know with poor prognosis, previously known as “Ewing- like sarcomas” (ELS), and now distinguished from Ewing sarcoma in the recent WHO classification, 2020 (24). This evidence concerns the gene BCOR and Ewing sarcoma.