Fewer radiation sessions may be just as safe after prostate surgery
NCT ID NCT06409910
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This trial tests whether giving radiation every other day (5 sessions total) is as safe as the standard daily schedule (20 sessions) for men who have had prostate cancer surgery. The study involves 204 participants across multiple centers. The main goal is to see if the shorter schedule causes fewer bowel side effects while still controlling the cancer.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Radiotherapy (external beam radiation)
- What this could lead to
- If successful, this could offer a more convenient, less frequent radiotherapy option after prostate cancer surgery with fewer side effects.
- What could go wrong
- This is a phase II trial with only 204 participants, so results are preliminary. The new schedule may not be as effective or could cause unexpected side effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 204 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2024
- Expected to finish
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Nov 2030
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Male participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Age \>/= 18 years 2. Able to provide informed consent 3. Histologic diagnosis of prostate adenocarcinoma 4. ECOG performance status 0-1 5. Previous radical prostatectomy \> 6 months prior to radiotherapy start date 6. Planned to receive post-operative radiation Exclusion Criteria: 1. Prior pelvic radiotherapy 2. Contraindications to radiotherapy 3. Confirmed metastases (if scan has been done for clinical care) 4. Participants with visible disease in the prostate bed or pelvic lymph nodes on imaging are not eligible for treatment on study.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
2 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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London Health Sciences Centre
RECRUITINGLondon, Ontario, N6A 5W9, Canada
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University Health Network - Princess Margaret Cancer Centre
RECRUITINGToronto, Ontario, M5G 2C1, Canada
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a new PET tracer spot hidden prostate cancer spread?
- Can a radioactive tracer and MRI reveal prostate Cancer's true extent?
- Can a One-Two radiation punch improve prostate cancer control?
- Can a special PET scan change the course of prostate cancer?
- Can a High-Tech radiation beam hit prostate tumors without harming healthy tissue?
- Can 3D imaging make prostate radiation more precise and worth the cost?