HDAC9 and plasma cell myeloma: HDAC inhibitors such as belinostat, entinostat, vorinostat, and panobinostat and BET protein inhibitors, such as ABBV-075 or TEN-010, have been tested in patients with several tumors, such as lymphoma and myeloma, with beneficial effects whereas these compounds do not have enough effective activity in the treatment of renal tumors.