Prostate cancer radiation study seeks to Fine-Tune treatment by analyzing Tumors' inner workings
NCT ID NCT06200974
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how a type of radiation called HDR brachytherapy changes prostate cancer on a molecular level. Researchers will analyze blood, tissue, and gut bacteria samples from 100 men with low-risk or early intermediate-risk prostate cancer. The goal is to find the best radiation dose by tracking how tumors respond at the cellular level.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2024
- Expected to finish
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Feb 2038
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.
Who is studied
Patients diagnosed with localized prostate cancer suitable for brachytherapy as monotherapy.
- Ages
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18 years and older
- Sex
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Anyone
- 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: * Favorable risk and intermediate-risk prostate cancer with estimated life expectancy of at least 10 years. * Clinical stage T1c-T2b, PSA \< 20, Gleason \< 8 * ECOG 0-1 * Low tier intermediate-risk prostate cancer is defined by: a single NCCN intermediate risk factor (either Gleason 7(3+4) and PSA \< 10 ng/ml OR Gleason 6 and PSA 10-20 ng/ml) * Extensive favorable-risk disease is defined as: clinical stage T1c-T2a, PSA \< 10, Gleason 6, ≥ 50% of biopsy cores containing cancer, PSA density \> 0.2 ng/cc, * Selected intermediate risk patients not defined above * T1c/T2a * PSA \< 10 and Gleason 4+3 * PSA \> 10 (\< 20) and Gleason 3+4 * PSA 10-15 ng/ml and Gleason 4+3 and \< 33% cores involved * Max tumor length in any core 10 mm * No androgen deprivation therapy (ADT) * Signed study specific informed consent. Exclusion Criteria: * Prior radical surgery for carcinoma of the prostate, * Prior pelvic radiation * Prior chemotherapy for prostate cancer, * Claustrophobic or unable to undergo MRI * Patients unsuitable for general anesthesia, on blood thinners which cannot be stopped for 24 hours, or who have contraindications to radiotherapy such as systemic sclerosis, or inflammatory bowel disease
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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
1 site. 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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British Columbia Cancer Center for the Southern Interior
RECRUITINGKelowna, British Columbia, V1Y 5L3, Canada
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Other studies related to the condition(s) this trial covers.
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- Freezing or heating prostate tumors: a targeted alternative to surgery?
- Targeted radiation plus hormone therapy may slow Low-Volume prostate cancer spread
- Intermittent fasting tested to ease radiation side effects in cancer patients
- Zapping prostate tumors with extra precision: new trial aims for fewer side effects