NEW YORK--(BUSINESS WIRE)--June 1, 2006--ZIOPHARM Oncology, Inc. (OTC BB: ZIOP - News) announced today the appointment of Brian Schwartz, M.D., as Senior Vice President for Medical and Regulatory Affairs and Chief Medical Officer. Dr. Schwartz will work directly with Chief Executive Officer Jonathan Lewis, M.D., Ph.D., on corporate strategy and with Dick Bagley, President and Chief Operating Officer, for operational activities.