Syndax Pharmaceuticals, Inc. is a clinical-stage biopharmaceutical company engaged in the development of cancer therapies. Its product candidates include SNDX-5613 and SNDX-6352. The company was founded by Richard A. Heyman, Eckard Weber, Peter Ordentlich, Ronald M. Evans and Michael Downes on October 11, 2005 and is headquartered in Waltham, MA.