The HDAC Inhibitors meeting, held in Boston, included topics covering new therapeutic developments in the field of HDAC inhibitors. This conference report highlights selected presentations on HDAC inhibitors for the treatment of cancer, inflammation, and neurodegenerative and other CNS diseases. Investigational drugs discussed include several compounds under evaluation by Karus Therapeutics Ltd, OCID-4681 (Orchid Research Laboratories Ltd) and EVP-0334 (EnVivo Pharmaceuticals Inc).