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Completed Phase 2 Interventional Results available

Enzalutamide With or Without Vaccine Therapy for Advanced Prostate Cancer

ClinicalTrials.gov ID: NCT01867333

Public ClinicalTrials.gov record NCT01867333. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 5, 2026, 4:21 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Randomized Phase II Trial Combining Vaccine Therapy With PROSTVAC /TRICOM and Enzalutamide vs. Enzalutamide Alone in Men With Metastatic Castration Resistant Prostate Cancer

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

Background: \- Enzalutamide is a hormone therapy that is used to treat advanced prostate cancer. It is given after chemotherapy and surgery to help the body destroy the cancer cells. A new possible way of treating prostate cancer is using a vaccine that may help stimulate the immune system. It will help white blood cells recognize and kill the cancer cells in and around the prostate. Researchers want to see whether this vaccine, given with enzalutamide, is more effective at treating advanced prostate cancer than enzalutamide alone. Objectives: \- To compare the safety and effectiveness of enzalutamide with and without vaccine therapy for advanced prostate cancer. Eligibility: \- Men at least 18 years of age who have advanced castration-resistant prostate cancer. Design: * Participants will be screened with a physical exam and medical history. Blood and urine samples will be collected. Imaging studies will be used to monitor the cancer before treatment. * Participants will be separated into two groups. One group will have enzalutamide and the study vaccine. The other group will have enzalutamide alone. * All participants will take enzalutamide once a day. They will take the drug during 4-week cycles of treatment. * Treatment will be monitored with frequent blood tests and imaging studies. Participants will continue to take the study drug for as long as the cancer does not grow, and the side effects are not severe. * The vaccine group of participants will also have the new study vaccine. They will have a single injection on the first day of the first study cycle. There will be regular booster injections afterward. There will be one on day 15 of the first cycle, the first day of the second cycle. The vaccine will then be given every 4 weeks for the next four cycles, and then every 12 weeks (every 3 cycles) thereafter. Participants will continue to have the study vaccine for as long as the cancer does not grow, and the side effects are not severe.

Study identification

NCT ID
NCT01867333
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Enrollment
57 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years and older
Sex
Male
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Aug 11, 2013
Primary completion
Sep 27, 2022
Completion
Oct 25, 2022
Last update posted
Sep 25, 2023

2013 – 2022

United States locations

U.S. sites
1
U.S. states
1
U.S. cities
1
Facility City State ZIP Site status
National Institutes of Health Clinical Center Bethesda Maryland 20892

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT01867333, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Sep 25, 2023 · Synced Sep 5, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT01867333 live on ClinicalTrials.gov.

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