Athenex, Inc. announced the appointment of Robert J. Spiegel, MD, FACP, a renowned biotech and pharmaceutical executive, to its Board of Directors. Dr. Spiegel was most recently Chief Medical Officer of PTC Therapeutics and prior to that he was Chief Medical Officer at Schering-Plough. Athenex also announces that Mr. John Koh has resigned from the company's Board of Directors. Mr. Koh is stepping down in order to permit the Company to expand the breadth and depth of the pharmaceutical industry expertise of its Board during a critical period of the Company's growth.