SAN DIEGO, March 8, 2010 (GLOBE NEWSWIRE) -- Harbor BioSciences Inc. said today it had reported encouraging data from its ongoing Phase I/IIa clinical trial with Apoptone® (HE3235) for castration resistant prostate cancer (CRPC) – also referred to as hormone resistant prostate cancer – at the ASCO Genitourinary Cancers Symposium in San Francisco on March 6, 2010. Preliminary results from this study, conducted with participating member sites of the Prostate Cancer Clinical Trial Consortium (PCCTC), were first reported on November 16, 2009. Apoptone is a novel steroid analog of a dihydrotestosterone metabolite that has been found to induce cell death (apoptosis) in prostate tumors.