ZIOPHARM Oncology, Inc., a biopharmaceutical company, engages in the development and commercialization of a portfolio of in-licensed cancer drugs. It focuses primarily on the licensing and development of proprietary drug candidate families that are related to cancer therapeutics that are already on the market or in development. The company�s product candidates include ZIO-101, ZIO-201, and ZIO-301, which are in phase I and/or II studies. ZIO-101, organic arsenic is in a phase I/II trial in patients with advanced myeloma, as well as a phase I trial in advanced cancers; ZIO-201, stabilized isophosphoramide mustard is in a phase I/II trial in patients with advanced sarcoma, as well as in a phase I trials in advanced cancers; and ZIO-301, an anti-cancer agent that targets mitosis like the taxanes is in a phase I trial. ZIOPHARM was founded in 2003 and is based in New York, New York.