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Progenics Pharmaceuticals' Data From A Phase 1 Study Of PSMA ADC Presented At ASCO 2013

TARRYTOWN, N.Y., June 1, 2013 (GLOBE NEWSWIRE) -- Progenics Pharmaceuticals, Inc. (Nasdaq:PGNX) today reported findings from the phase 1 clinical trial in prostate cancer patients of its PSMA ADC compound at the 49 th Annual Meeting of the American Society of Clinical Oncology (ASCO) in Chicago. Two additional abstracts related to PSMA ADC also were selected for publication in the ASCO Annual Meeting Proceedings.

Daniel Petrylak, M.D., Director of the Prostate Cancer Program/Genitourinary Cancer Program and Co-Director of the Signal Transduction Program at Yale University Medical Center, and an investigator in clinical trials of PSMA ADC, presented "Prostate Specific Membrane Antigen Antibody Drug Conjugate (PSMA ADC): A Phase I Trial in Metastatic Castration-Resistant Prostate Cancer Previously Treated with a Taxane" in the Genitourinary Cancer Poster Discussion Session.

"Phase 1 results for PSMA ADC, together with the additional data published in the Proceedings by my colleagues, reinforce our ongoing interest in PSMA as a compelling target in treating prostate cancer," said Robert J. Israel, M.D., Progenics' senior vice president of medical affairs and clinical research. "The phase 2 trial of PSMA ADC is on track to meet our goal of completing enrollment by the end of this year, with more than half the number of planned patients currently in the trial."

Additional abstracts published in the ASCO 2013 Annual Meeting Proceedings are:

#e16047: Correlation of PSMA ADC Exposure with Reduction in Tumor Growth Rate Determined Using Serial PSA Measurements from a Phase I Clinical Trial

#e16007: Antiandrogen Modulation of Prostate-Specific Membrane Antigen (PSMA): Dynamics and Synergy with PSMA-Targeted Therapy

Progenics' exhibit booth, #22054, presents details of the company's expanded oncology pipeline including the PSMA-targeted imaging compound 1404, a development stage radio-labeled small molecule designed to visualize cancer.

About the PSMA ADC Phase 1 Study Design

The phase 1, open-label, dose-escalation clinical trial was conducted in men with hormone-refractory prostate cancer that had progressed despite prior treatment with taxane-based chemotherapy regimens. In addition to assessing PSMA ADC's safety and tolerability, the study included evaluations of pharmacodynamics, changes in tumor burden, and changes in PSA and CTC values compared to baseline. PSA is a secreted protein that is distinct from PSMA.

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