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Clinical Trial Summary

Background: Prostate cancer is the second leading cause of cancer death in United States (U.S.) men. Radiation is an effective treatment for most patients with localized prostate cancer, but sometimes the tumor returns. Researchers want to see if a highly focused type of radiation can help. It is given in only 5 treatments. It is called stereotactic body radiation therapy (SBRT). Objective: To study the maximum tolerated dose and side effects of stereotactic body radiation therapy in people with a local recurrence of prostate cancer after radiation. Eligibility: Men at least 18 years old who have recurrent prostate cancer after radiation therapy and no evidence of distant metastatic disease. Design: Participants will be screened with blood tests, physical exam, and medical history. They may also have: Magnetic resonance imaging (MRI) scan of the prostate. Positron emission tomography (PET)/computed tomography (CT) scan. Participants will get an injection of 2-(3-{1-carboxy-5-[(6-18F-fluoro-pyridine-3-carbonyl)-amino]-pentyl}-ureido)-pentanedioic acid (18F-DCFPyL) for the PET scan. They will lie very still on their back on the scanner table. Small samples of prostate tumor tissue will be taken by a needle through the skin or rectum to see if the cancer is in the prostate. Small metal seeds will be placed into the prostate at the same time to help guide the radiation. About 2 weeks later, participants will have a radiation treatment planning CT scan. Participants will answer questions about their urine function, bowel function, erectile function, and mood. Participants will receive SBRT. They will have 5 radiation treatments over 2 weeks. Participants will have follow-up visits. They will have a physical exam, blood tests, and questionnaires. Six months after ending SBRT, the 18F-DCFPyL PET/CT will be repeated. Participants will continue to have routine visits until two years after treatment is completed....


Clinical Trial Description

Background: - Prostate cancer that recurs after prior radiation treatment can be challenging to cure due to the side effects of available treatments such as surgery and cryoablation. - Re-irradiation with brachytherapy or stereotactic approaches has shown excellent rates of prostate cancer disease control with tolerable side effects. - Using image guidance to allow highly conformal focal re-irradiation may potentially increase the efficacy of re-irradiation. Objectives: -Define the maximum tolerated dose (MTD) of image guided, focally dose escalated prostate radiation with stereotactic body radiation therapy (SBRT) in patients with a local recurrence of prostate cancer after prior radiotherapy. Eligibility: - Histological confirmation of recurrent prostate cancer after prior irradiation (external beam or brachytherapy) - No evidence of distant metastases of prostate cancer - No prior prostatectomy - Subject is greater than or equal to18 years old - Eastern Cooperative Oncology Group (ECOG) performance status less than or equal to 2 (Karnofsky greater than or equal to 60%). Design: - This is a Phase I trial of focal dose escalation with SBRT using image and pathologic guidance. - Areas in the prostate shown to have tumor on biopsy or with advanced imaging studies will be treated with highly conformal SBRT over a period of two to three weeks. Treatment will be guided and gated by fiducials implanted in the prostate. - Patients will be treated to escalating doses based on tolerability of the treatment. - Quality of life and functional outcomes such as urine, bowel, and erectile function will be assessed with questionnaires. - Up to 52 patients will be enrolled. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03253744
Study type Interventional
Source National Institutes of Health Clinical Center (CC)
Contact
Status Active, not recruiting
Phase Phase 1
Start date July 5, 2018
Completion date February 16, 2025

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