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Tiny study tests waiting game for prostate cancer return

NCT ID NCT05008900

Knowledge-focused Sponsor: University Health Network, Toronto Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at men whose prostate cancer came back after surgery, shown by a small rise in PSA. It compared giving radiation right away versus waiting and doing another special scan when PSA rose higher. Only 4 men took part, so the main goal was to see if such a study is even possible, not to prove which approach is better.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Salvage radiotherapy
What this could lead to
If successful, this could show that waiting for a repeat scan before treating is safe and effective, potentially sparing some men from unnecessary radiation.
What could go wrong
This is a very small feasibility study with only 4 participants, so results may not apply widely. The approach may not control cancer as well as immediate treatment.

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

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

4 people

The number who actually took part.

Started

Mar 2022

Finished

Jul 2024

Lead sponsor

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

18 years and older

Sex

Male participants only

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Histologically-proven prostate cancer * pT1-T4 pN0/Nx cM0 * PSA at BCR \>0.1 - \<0.3 ng/mL post-radical prostatectomy * PSMA PET/CT negative at BCR post radical prostatectomy * Planned SRT to prostate bed +/- pelvic lymph nodes * ECOG 0 or 1 * Age ≥ 18 years * Informed consent: All patients must sign a document of informed consent indicating their understanding of the investigational nature and risks of the study before any protocol related studies are performed. Exclusion Criteria: * Active or post prostatectomy androgen deprivation use * Previous pelvic radiotherapy * Other contraindications to radiotherapy

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Conditions

The condition(s) this trial relates to.

prostate cancer

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Prostate cancer Prostatectomy

Contacts and locations

Locations

  • Princess Margaret Cancer Center

    Toronto, Ontario, M5G 2M9, Canada

More trials for these conditions

Other studies related to the condition(s) this trial covers.