HDAC9 and synovial sarcoma: To investigate the influence of HDAC inhibitors on sarcoma cell growth, SW-982 (synovial sarcoma) and SW-1353 (chondrosarcoma) cells were exposed to SAHA (0.5, 1.0, 2.5, 5.0, 10.0, 15.0 μM), LBH-589 (0.01, 0.05, 0.1, 0.25, 0.5, 1.0, 5.0 μM), or PXD101 (0.5, 1.0, 2.5, 5.0 μM) for 48 h.