HOXA9 and Ewing sarcoma: Examples are the EWSR1‐FLI1 fusion in Ewing Sarcoma, which combines the IDR of Ewing Sarcoma RNA‐binding protein 1 (EWSR1) with the TF friend leukemia integration 1 (FLI1)127, 129, 130 and the NUP98‐HOXA9 fusion of nucleoporin 98 (NUP98) and the homeobox A9 (HOXA9) TF as well as other homeodomain proteins.122, 131, 132