EWSR1 and Ewing sarcoma: Our research group has predominantly focused on looking up genes regulated positively or negatively by EWSR1::FLI1 in Ewing sarcoma cells (e.g., NR0B1/DAX1, CCK, LOX, SPRY1, DKK2, or FEZF1) [6,7,8,9,10,11].