Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 18 to 100 Men only

Radiation treatment comparison for metastatic prostate cancer

Official title: Consolidative Prostate Radiotherapy in Patients With Metastatic Prostate Cancer

Run by University Health Network, Toronto · NCT05656794 · Data updated 2026-11-12

This study is testing whether getting radiation treatment every other day for two weeks causes different side effects compared to getting it once a week for six weeks in men with metastatic prostate cancer.

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years to 100 Years
SexMen only
Enrollment40 (estimated)
SponsorUniversity Health Network, Toronto
Academic / other
Drugs / interventionschemotherapy, radiation
Locations1 site (Toronto, Ontario)
StatusRecruiting
StartedAugust 9, 2023
Main results expectedAugust 2031
Study endsAugust 2031
Registry record updatedMarch 23, 2026
Trial IDNCT05656794 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults aged 18 and older with histologically-proven metastatic prostate cancer and specific criteria regarding the volume and location of metastases.

Probably not a fit

Patients with prior pelvic radiotherapy or conditions that contraindicate radiotherapy may 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 phase II trial investigates the side effects of two different radiation treatment schedules for patients with metastatic prostate cancer. Participants will receive radiation either every other day for two weeks or once weekly for six weeks. The study aims to determine if the frequency of treatment affects the side effects experienced by patients. It is a randomized trial, meaning participants will be assigned to one of the two treatment groups by chance.

Why it matters

Potential benefit: If successful, this study could help optimize radiation treatment schedules to minimize side effects for patients with metastatic prostate cancer.

How similar studies have gone: While this approach is being tested in this specific context, similar studies have shown varying results in optimizing radiation schedules for cancer treatment.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Histologically-proven prostate cancer
* Presence of low-volume or high-volume metastases (high volume defined as the presence of visceral metastases or ≥4 bone lesions with at least 1 lesion beyond the vertebral bodies and pelvis.)
* Planned to or receiving systemic treatment ADT +/- ARAT as per physician discretion (Previous chemotherapy allowed if completed more than 6 weeks prior to randomization.)
* Planned for EBRT
* ECOG 0 or 1
* Age 18 years or older

Exclusion Criteria:

* Prior radiotherapy to pelvis
* Active ulcerative colitis or Crohn's Disease, at discretion of treating physician
* Any condition where radiotherapy is contraindicated

Where it's running

  • University Health Network, Princess Margaret Hospital
    Toronto, Ontario, Canada
    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.