NEW YORK, May 30, 2012 (GLOBE NEWSWIRE) -- ZIOPHARM Oncology, Inc. (Nasdaq:ZIOP) announced today that Jonathan Lewis, M.D., Ph.D., Chief Executive Officer, will present at the Jefferies 2012 Global Healthcare Conference on Wednesday, June 6, 2012 at 11:30 a.m. ET in New York City.
