MLLT3 and acute myeloid leukemia: Moreover, by clustering ATAC-seq peaks (Supplementary Fig. 12f), the previously reported BRD9/BRG1-binding ncBAF sites in RN2 cells (mouse MLL-AF9/NrasG12D AML cells)24 were associated with open chromatin after BRD9 depletion (Fig. 7l).