RecruitingPhase 2Drug trialStudy of Sipuleucel-T With or Without Continuing New Hormonal Agents in Metastatic Prostate CancerThis study is designed to test the hypothesis that using Sipuleucel-T (Provenge) in combination with new hormonal agents (NHA) (abiraterone, enzalutamide, apalutamide) for the treatment of participants with asymptomatic metastatic castration resistant prostate cancer (mCRPC) and no visceral metastases would enhance the activation of antigen presenting cells (APC) by sipuleucel-T.