Precision radiotherapy may buy time for men with spreading prostate cancer

NCT ID NCT07691697

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Recruiting now This study
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
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 Results may not be published yet.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

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Status unknown
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First seen Jul 09, 2026 · Last updated Jul 10, 2026 · Updated 1 time

Summary

This study investigates whether precisely targeted radiotherapy can delay the need for stronger drugs in men with prostate cancer that has started to grow in a few new spots while on systemic therapy. Participants have metastatic hormone-sensitive or castration-resistant prostate cancer and develop up to five new or growing lesions detected by PSMA PET imaging. The treatment, called progression-directed radiotherapy, uses techniques like stereotactic body radiotherapy or brachytherapy to target only those active lesions. The goal is to see if this approach can postpone switching to a new line of systemic therapy and maintain control of the disease.

What this could mean

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

Active substance
Progression-directed radiotherapy (stereotactic body radiotherapy, brachytherapy, or external beam radiotherapy)
What this could lead to
If successful, this approach could help men with prostate cancer delay switching to more aggressive systemic treatments, preserving quality of life.
What could go wrong
This is an observational registry, not a controlled trial, so results may be influenced by patient selection. Radiotherapy carries risks like fatigue, urinary or bowel irritation, and may not prevent further progression.

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.

Participants

About 1,000 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2026

Expected to finish

Dec 2031

An estimate. End dates often move.

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.

Who is studied

Adults with metastatic prostate cancer who develop PSMA PET-defined oligoprogression during otherwise active systemic therapy and undergo progression-directed radiotherapy in routine clinical practice. The registry includes patients with metastatic hormone-sensitive and metastatic castration-resistant prostate cancer treated with SBRT, moderately hypofractionated external beam radiotherapy, brachytherapy, combined approaches, or mixed-modality radiotherapy when clinically appropriate.

Ages

18 years and older

Sex

Male participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Age 18 years or older. * Diagnosis of prostate cancer. * Metastatic hormone-sensitive prostate cancer or metastatic castration-resistant prostate cancer. * Receiving active systemic therapy at the time of oligoprogression. * Oligoprogression defined as up to five new and/or regrowing lesions detected on PSMA PET/CT or PSMA PET/MR, with other known disease sites remaining controlled. * Planned or completed PSMA PET-guided progression-directed radiotherapy to all clinically relevant oligoprogressive lesions as part of routine clinical care. * Radiotherapy may include stereotactic body radiotherapy, moderately hypofractionated external beam radiotherapy, brachytherapy, combined external beam radiotherapy and brachytherapy, or mixed-modality radiotherapy, when clinically appropriate. * Availability of baseline clinical, imaging, treatment, and follow-up data sufficient for registry endpoints. Exclusion Criteria: * Polymetastatic progression not consistent with an oligoprogressive state at the time of index radiotherapy. * More than five new or regrowing lesions at the index oligoprogression episode. * Radiotherapy delivered with purely palliative symptom-control intent rather than progression-directed local control intent. * Lack of sufficient clinical, imaging, treatment, or follow-up information for endpoint assessment. * Any condition that, in the opinion of the treating physician or investigator, makes registry inclusion inappropriate.

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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

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  1. The places running it

    1 site. The list below names each one and where it is.

  2. 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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  3. A doctor treating you

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Contacts and locations

Locations

  • Affidea Nu-Med Cancer Diagnostics and Therapy Center

    RECRUITING

    Zamość, Lublin Voivodeship, 22-400, Poland

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