Epigenetic Protein Families: a new frontier for drug discovery [Lots of talk about epigenetics these days. Here is an article from Nature Review Drug Discovery May 2012] http://www.nature.com/nrd/journal/v11/n5/full/nrd3674.html Table 2: HDAC and sirtuin inhibitors in clinical development: http://www.nature.com/nrd/journal/v11/n5/slides/nrd3674-pt2.ppt