LSD1 is ubiquitously overexpressed in numerous cancers, including acute myeloid leukemia (AML), breast cancer, prostate cancer, neuroblastoma, and small cell lung cancer (SCLC), and its overexpression associates with the initiation and progression of malignant tumors and the overall survival time of patients [7, 8]. The gene discussed is KDM1A; the disease is acute myeloid leukemia.