Enzalutamide Implants (Enolen) in Patients With Prostate Cancer

This study is a multi-center, open-label feasibility study. Approximately 45 participants planning for radical prostatectomy will be recruited to assess the safety and patient tolerance of Enolen for the localized delivery of enzalutamide into the prostate. At baseline, patients will undergo multiparametric MRI of the prostate. Study participants will have placement of the drug eluting Enolen implants followed by a standard of care prostatectomy 6-12 weeks or 4-12 months post-implant procedure. Twenty participants in Cohort A receive up to 16 implants and have a prostatectomy planned between weeks 6 and 12 post-implant procedure. Twelve participants in Cohort B receive 16 implants and have a prostatectomy planned between weeks 6 and 12 post-implant procedure. Twelve participants in Cohort C receive 16 implants and have a prostatectomy planned between months 4 and 12 post-implant procedure. If the participant is unwilling to undergo the prostatectomy by 12 months, they must agree to close monitoring with imaging by MRI every three months and biopsies, as indicated, for up to 24 months post-implant procedure. Study participants are followed for 2-6 weeks post-prostatectomy. Participants will be followed for an additional 6-12 weeks post surgery. Clinical labs and correlative sample collection and patient quality of life questionnaires will be administered at follow-up visits.