Clinical trial Recruiting at 3 sites Interventional Ages 18 and up Men only

Comparing different radiation therapies for treating oligometastatic prostate cancer

Official title: Moderate Versus Ultra Hypofractionation or Brachytherapy for PRimary OligoMetastatic Prostate Cancer Treatment

Run by British Columbia Cancer Agency · NCT04610372 · Data updated 2026-11-12

This study is testing whether new types of radiation therapy can help men with oligometastatic prostate cancer feel better and live longer compared to standard treatment.

Quick facts

Study typeInterventional
Ages18 Years and up
SexMen only
Enrollment168 (estimated)
SponsorBritish Columbia Cancer Agency
Academic / other
Drugs / interventionsradiation
Locations4 sites (Kelowna, British Columbia and 3 other locations)
StatusRecruiting
StartedJuly 12, 2021
Main results expectedJune 30, 2030
Study endsJune 30, 2033
Registry record updatedMay 6, 2026
Trial IDNCT04610372 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are men newly diagnosed with low volume oligometastatic prostate cancer, defined as fewer than 5 bone metastases and/or non-regional lymph node involvement.

Probably not a fit

Patients with a high metastatic burden, defined as 5 or more bone metastases or visceral metastases, will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the effectiveness and tolerability of ultrahypofractionated stereotactic ablative radiotherapy (SABR) and brachytherapy compared to moderately hypofractionated external beam radiotherapy (EBRT) in men with oligometastatic prostate cancer. Participants will be randomized to receive one of the treatment options, and their urinary quality of life will be assessed alongside other secondary endpoints such as progression-free survival and overall survival. The trial aims to determine if the newer radiation techniques can provide similar or better outcomes while being more convenient and cost-effective.

Why it matters

Potential benefit: If successful, this study could offer a more effective and less burdensome treatment option for patients with oligometastatic prostate cancer.

How similar studies have gone: Other studies have shown promising results with similar approaches, but this specific comparison of ultrahypofractionation techniques is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Signed study specific informed consent
* European Cooperative Oncology Group performance status 0 to 2
* Histologically confirmed adenocarcinoma of the prostate
* Any Tumor stage, any T, any N, M1
* No prior therapy for prostate cancer apart from androgen deprivation
* Planned for long-term androgen deprivation therapy (greater than 9 months in duration)
* Patient is able and willing to complete the quality of life questionnaires, and other assessments that are a part of this study
* For brachytherapy arms, patient must be technically suitable for brachytherapy according to investigator, in terms of bladder function and prostate size.

Exclusion Criteria:

* High metastatic burden defined as 5 or more bone metastases or visceral metastases
* Contraindications to EBRT such as active inflammatory bowel disease or previous pelvic radiation
* For Brachytherapy Arms =: Any prior Transurethral resection of prostate

Where it's running

  • British Columbia Cancer Agency Center for the Southern Interior
    Kelowna, British Columbia, Canada
    Recruiting
  • Vancouver Cancer Center
    Vancouver, British Columbia, Canada
    Recruiting
  • Vancouver Island Cancer Center
    Victoria, British Columbia, Canada
    Recruiting
  • Fraser Valley Cancer Center
    Surrey, British Columbia, Canada
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.