Dendreon is a biotechnology company. Its lead product, Provenge (known generically as sipuleucel-T), is an immunotherapy for prostate cancer. It consists of a mixture of the patient's own blood cells (autologous, with dendritic cells thought to be the most important) that have been incubated with the Dendreon PAP-GM-CSF fusion protein. Phase III clinical trial results demonstrating a survival benefit for prostate cancer patients receiving the drug were presented at the AUA meeting on April 28, 2009. After going through the approval process, Provenge was given full approval by the FDA on April 29, 2010. Dendreon's stock value fell 66% on August 4, 2011, after abandoning its forecast for its debut drug Provenge.
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