NCT06205316 · Mayo Clinic
SBRT Versus Hypofractionated Radiotherapy for Biochemically Recurrent or Oligometastatic Prostate Adenocarcinoma
What this study is about
This phase III trial tests the side effects of stereotactic body radiation therapy (SBRT) compared to hypofractionated radiotherapy for treating patients with prostate adenocarcinoma that has come back after a period of improvement (recurrent) or that has spread from where it first started (primary site) to a limited number of sites (oligometastatic).
View original scientific description
This phase III trial tests the side effects of stereotactic body radiation therapy (SBRT) compared to hypofractionated radiotherapy for treating patients with prostate adenocarcinoma that has come back after a period of improvement (recurrent) or that has spread from where it first started (primary site) to a limited number of sites (oligometastatic).
Interventions
DRUG
Antiandrogen Therapy
Receive ADT
PROCEDURE
Biospecimen Collection
Undergo blood sample collection
RADIATION
Hypofractionated Radiation Therapy
Undergo hypofractionated radiation therapy
PROCEDURE
Positron Emission Tomography
Undergo PET scan
RADIATION
Stereotactic Body Radiation Therapy
Undergo SBRT
OTHER
Survey Administration
Ancillary study
PROCEDURE
Magnetic Resonance Imaging
Undergo MRI
Primary outcome measures
Incidence of grade 3 or higher genitourinary (GU)/gastrointestinal (GI) radiation treatment-related adverse events
Time frame: Up to 2 years
Defined as the proportion of patients experiencing an increase in GU/GI Common Terminology Criteria for Adverse Events version 5.0 to grade 3+ compared to pre-radiation therapy GU/GI toxicity over the number of patients eligible for toxicity evaluation at 2 years from the start of radiation therapy. This endpoint will be compared between patients treated with stereotactic body radiation therapy and hypofractionated radiation therapy.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Histologically confirmed prostate adenocarcinoma at the time of surgery
- Pathologic stages T2-T3b, Nx or N0-1, M0-1 as staged by the pathology report (American Joint Committee on Cancer \[AJCC\] Criteria 8th edition \[Ed.\])
- PSA post radical prostatectomy ≥ 0.1 and \< 2.0 ng/mL ≤ 90 days prior to enrollment, obtained ≥ 6 weeks after surgery
- Eastern Cooperative Oncology Group (ECOG) performance status 0, 1, or 2 assessed ≤ 90 days of enrollment
- Patients must sign institutional review board (IRB) approved study specific informed consent
- Patients must complete all required pre-entry tests within the specified time frames
- Patients must be able to start treatment (ADT or radiation) ≤ 120 days of study registration
- Patients must be ≥ 18 years old
- Prostate cancer up to oligometastatic disease, up to 5 sites
Exclusion criteria
- Previous pelvic radiation
- Prior androgen deprivation therapy for prostate cancer and PSA ≥ 0.1 ng/mL
- Active rectal diverti
Where
- Scottsdale, Arizona
- Albert Lea, Minnesota
- Mankato, Minnesota
- Rochester, Minnesota
- Eau Claire, Wisconsin
- La Crosse, Wisconsin
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 8, 2026 · Source of record for eligibility and locations