An Open -Label, Multicenter Study of Subjects With Metastatic Castrate-Resistant Prostate Cancer Treated With PROVENGE ® and Boosted With A Single Infusion of Sipuleucel-T to Measure Immune Response

Inclusion Criteria: For a subject to be eligible for participation in this study, all of the following criteria must be satisfied: 1. Potential subjects are men aged ≥18 years who are clinically indicated for treatment with PROVENGE® (asymptomatic or minimally symptomatic metastatic castrate-resistant \[hormone refractory\] prostate cancer). 2. Have qualified for on-label PROVENGE® infusion 3. Have received all 3 infusions of PROVENGE® prior to randomization 4. Written informed consent provided prior to the initiation of study procedures 5. Estimated life expectancy ≥12 months Exclusion Cri…