Progenics Pharmaceuticals, Inc. (Progenics) is a biopharmaceutical company focuses on research and development for biotechnology product candidates in oncology, virology, supportive care and gastroenterology. It is also engaged in research to identify multiplex phosphoinositide 3-kinase inhibitors for blocking signaling pathways in the growth of aggressive cancers. In gastroenterology, its first commercial product is RELISTOR subcutaneous injection. Its principal product candidate is PSMA ADC, a fully human monoclonal antibody-drug conjugate directed against prostate specific membrane antigen, a protein found at high levels on the surface of prostate cancer cells and also on the neovasculature of a number of other types of solid tumors. In January 2013, the Company acquired Molecular Insight Pharmaceuticals, Inc.