PHA-680626 is an effective inhibitor of the interaction between Aurora-A and N-Myc. PHA-680626 inhibits kinase activity of AURKA and Bcr-Abl, and induces N-Myc degradation. PHA-680626 decreases phosphorylation of CrkL and histone H3. PHA-680626 shows anti-proliferative and pro-apoptotic activity on Imatinib (HY-15463)-resistant chronic myeloid leukemia cell lines and primary CD34+ cells[1].