In BBC2 and KG1 stem cell leukemia and lymphoma cells, the tumor suppressor miR-150-5p was downregulated by MYB and other factors [fibroblast growth factor receptor 1 (FGFR1) and MYC], but treatment with mebendazole showed increased antiproliferative activity and apoptosis induction. The gene discussed is MYB; the disease is lymphoma.