CEBPZ and acute myeloid leukemia: However, among the 17 patients with core-binding factor AML (CBF-AML) and baseline fusion transcripts ≥0.1%, azacitidine maintenance (n=9) showed significantly superior EFS and CIR compared to observation (n=8) (EFS: 100% vs. 62.5%, p=0.048; CIR: 0.0% vs. 40.0%, p = 0.042).