PUNTA DEL ESTE, Uruguay--(BUSINESS WIRE)--ZIOPHARM Oncology, Inc. (NASDAQ: ZIOP) announced today the presentation of data on ZIO-201 at the XXXI World Congress of the International Society of Hematology (ISH) meeting being held in Punta del Este, Uruguay. ZIO-201 is a proprietary form of the therapeutic active metabolite of ifosfamide (IFOS), a drug that is widely used in the treatment of lymphoma. However, IFOS can be problematic in treating lymphoma as certain IFOS metabolites cause debilitating bladder toxicity and confusion. Further, there is a variability in treatment effect associated with the metabolism of IFOS and resistance can develop. The Company believes that ZIO-201 could better deliver the clinical benefits of IFOS without the associated toxicities and the development of resistance.