Histone-lysine N-methyltransferase 2A, also known as acute lymphoblastic leukemia 1, myeloid/lymphoid or mixed-lineage leukemia 1, or zinc finger protein HRX, is an enzyme that in humans is encoded by the KMT2A gene. From Wikipedia
The peer-reviewed study outlines a dual mechanism that could make standard daunorubicin more effective in this high-risk leukemia subtype.