NEW YORK--(BUSINESS WIRE)--April 6, 2006--ZIOPHARM Oncology, Inc. (OTC BB: ZIOP - News) announced today Dr. Jonathan Lewis, Chief Executive Officer, will present at the BIO 2006 Annual International Convention on Tuesday, April 11, 2006 at 9:30 a.m. CDT (10:30 a.m. EDT) in Room A at McCormick Place South in Chicago, Illinois. The presentation will be available on the Company’s website at www.ziopharm.com.