BCL6-IN-10 (Compound WK499) is a BCL6 inhibitor. BCL6-IN-10 interrupts the binding of BCL6 to SMRT protein. BCL6-IN-10 induces cell apoptosis , cell cycle arrest and DNA damage. BCL6-IN-10 inhibits AML cell proliferation ( IC 50 s: 0.91, 1.63, 1.026, 7.42, 0.87, 0.85μM for OCl-AML3, THP1, MOLM13, HL60, KG1, NB4 cell respectively).