Almost 93% of 2,345 leukemia cases reported in Meyer et al. (2018) resulted from MLL fusions with one of 12 highly recurrent TPGs (AF4/AFF1, AF9/MLLT3, ENL/MLLT1, AF10/MLLT10, BCS1L/PTD, ELL, AFDN/AF6/MLLT4, EPS15, AF1Q/MLLT11, SEPT6, AF17/MLLT6, and SEPT9), that will be cited from now on using the official gene name. This evidence concerns the gene AFF1 and leukemia.