AR and Ewing sarcoma: Given the male predominance of this subset of disease, it is not surprising that, when compared to Ewing sarcoma, no significant difference was seen in protein expressions with the exception of a significantly higher overexpression of AR in DSRCT (59% versus 3%, p=1.7E-10) and TUBB3 (56% versus 29%, p=0.03) [43].