Stopped: Loss of funding
This phase II trial tests how well pembrolizumab along with standard of care androgen deprivation therapy, with bicalutamide and gonadotropin releasing hormone agonist, and radiotherapy for the treatment of patients with high risk prostate cancer that has not spread to other parts of the body (localized). A monoclonal antibody, such as pembrolizumab, is a type of protein that can bind to certain targets in the body, such as molecules that cause the body to make an immune response (antigens). Bicalutamide is in a class of medications called androgen receptor inhibitors. It works by blocking the effects of androgen (a male reproductive hormone) to stop the growth and spread of tumor cells. Gonadotropin-releasing hormone agonists prevent the body from making luteinizing hormone-releasing hormone (LHRH) and luteinizing hormone (LH). This causes the testicles to stop making testosterone (a male hormone) in men and may stop the growth of prostate cancer cells that need testosterone to grow. Radiation therapy uses high energy x-rays, particles, or radioactive seeds to kill cancer cells and shrink tumors. Giving pembrolizumab with androgen deprivation therapy and radiotherapy may kill more tumor cells in patients with high risk localized prostate cancer.
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Biopsy-complete response determined by post-treatment biopsy
Timeframe: From first dose of pembrolizumab Cycle 1 Day 1 to 6 months after Cycle 1 Day 1. Cycle length is 21 days.
Incidence of adverse events
Timeframe: From first dose of pembrolizumab to 30 days after last dose of pembrolizumab