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Abstract
Sipuleucel-T (Provenge®; APC8015; Dendreon Corp, WA, USA) is a novel immunotherapeutic cellular product, which includes autologous dendritic cells pulsed ex vivo with a recombinant fusion protein (PA2024) consisting of granulocyte macrophage colony-stimulating factor and prostatic acid phosphatase. Two Phase II trials in men with androgen-dependent biochemically relapsed prostate cancer have demonstrated a decrease in prostate-specific antigen and prolongation in prostate-specific antigen doubling time. In men with hormone-refractory prostate cancer, clinical trials have demonstrated both biological activity and clinical response to sipuleucel-T. Data from two Phase III trials in men with asymptomatic, metastatic hormone-refractory prostate cancer demonstrated an improved median overall survival in men who received sipuleucel-T compared with placebo. Clinical trials are ongoing or are being developed to evaluate sipuleucel-T in various prostate cancer disease states and in combination with other treatment modalities.