Seattle Genetics, Inc. (Nasdaq: SGEN), a global biotechnology company, today announced a development and license agreement with Immunomedics, Inc. (Nasdaq: IMMU) under which Seattle Genetics would receive exclusive worldwide rights to develop, manufacture and commercialize sacituzumab govitecan (IMMU-132). Sacituzumab govitecan is an antibody-drug conjugate (ADC) targeted to TROP-2, which is expressed in several solid tumors including cancers of the breast, lung and bladder. Sacituzumab govitecan is in a phase 1/2 trial for patients with triple negative breast cancer (TNBC), as well as multiple other solid tumors. It received Breakthrough Therapy Designation from the U.S. Food and Drug Administration (FDA) for the treatment of patients with TNBC who have failed prior therapies for metastatic disease. Data from the phase 1/2 trial are intended to serve as the basis for a planned Biologics License Application (BLA) submission under the FDA's accelerated approval regulations. "This agreement would add a promising late-stage ADC to our pipeline as we continue making progress towards our goal of becoming a global, multi-product oncology company. Sacituzumab govitecan would complement our existing pipeline by providing a potential near-term opportunity to commercialize a second drug in the United States, expand our international capabilities in Europe and elsewhere and extend our efforts in solid tumors," said Clay Siegall, Ph.D., President and Chief Executive Officer of Seattle Genetics. "In addition, we believe our expertise in ADCs, including demonstrated success in clinical development, regulatory, manufacturing and commercialization, ideally positions Seattle Genetics to advance this program globally. We look forward to working with Immunomedics to advance this program for patients in need, including those with triple negative breast cancer and other solid tumors." Cynthia L. Sullivan, President and Chief Executive Officer of Immunomedics, said, "After a long and robust process, we concluded that licensing our lead asset, sacituzumab govitecan, to Seattle Genetics, the leading ADC company, would give us the best opportunity to advance this product on behalf of advanced stage cancer patients. Sacituzumab govitecan has the potential to drive significant value for patients with multiple types of cancer who are in need of new therapy options, and we look forward to continuing its development with Seattle Genetics."