ATLANTA--(BUSINESS WIRE)--June 5, 2006--Dr. Jasti Rao, an investigator at the University of Illinois, in collaboration with Onconova Therapeutics, Inc., presented data yesterday highlighting the activity of therapeutic candidate ON 01910.Na in brain cancer or glioblastoma. The data were presented at the American Society for Clinical Oncology (ASCO) annual meeting being held in Atlanta.