KMT2A and acute myeloid leukemia: In order to molecularly understand the interaction of oncogenic RAS with cytarabine in AML, we took advantage of mouse bone marrow cells that had been immortalized using a conditional MLL-ENL-ER oncogene [27], [28] and that were co-infected with either an empty vector (control cells) or a vector expressing oncogenic RAS (Ras cells).