SAN ANTONIO--(BUSINESS WIRE)--GenSpera, Inc. (OTCBB: GNSZ) announced today that the Institutional Review Board (IRB) at the University of Wisconsin, in Madison, WI, has approved a Phase I study of its target activated pro-drug, G-202, for the treatment of cancer. The FDA (US Food and Drug Administration) approved the study in September. GenSpera expects to enroll the first study patient early in the first quarter of 2010.