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Clinical Trial Summary

This phase II trial studies the side effects of radiation therapy (hypofractionated proton beam therapy or IMRT) for the treatment of prostate cancer that has come back (recurrent) or that has spread to a limited number of sites (oligometastatic) following primary localized treatment. Hypofractionated proton beam radiation therapy delivers smaller doses of radiation therapy over time and may kill more tumor cells and have fewer side effects. IMRT uses high energy x-rays to kill tumor cells and shrink tumors. This trial is being done to find out if a shorter course of radiation therapy is better with fewer side effects for patients with recurrent prostate cancer.


Clinical Trial Description

PRIMARY OBJECTIVE: I. To assess late >= grade 3 gastrointestinal (GI) and/or genitourinary (GU) toxicity of interest with the hypofractionated regimen with proton beam therapy or intensity-modulated radiation therapy (IMRT) (late defined as 3 to 24 months after protocol radiation therapy [RT]). SECONDARY OBJECTIVES: I. Late grade >= 2 GI and/or GU toxicities of interest within 24 months after the protocol RT, using the Common Terminology Criteria for Adverse Events (CTCAE) version (v)4.0. II. Acute grade >= 3 GI and/or GU toxicities of interest during and within 3 months after the protocol RT, using the CTCAE v4.0. III. Compare the rates of late >= grade 3 GI and/or GU toxicity between the 2 treatment schedules. OUTLINE: Patients are randomized to 1 of 2 arms. ARM I: Patients undergo proton beam radiation therapy 5 days a week over 3 weeks. Patients undergo positron emission tomography (PET) scan, computed tomography (CT) scan, magnetic resonance imaging (MRI), and blood sample collection throughout the study. ARM II: Patients undergo IMRT 5 days a week over 5 weeks. Patients undergo PET scan, CT scan, MRI, and blood sample collection throughout the study. After completion of study, patients are followed up at 3-6, 12, 18, 24, 30, 36, 42, 48, 54, and 60 months. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04190446
Study type Interventional
Source Mayo Clinic
Contact
Status Active, not recruiting
Phase Phase 2
Start date January 6, 2020
Completion date December 31, 2024

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