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New radiation technique aims to protect erections in prostate cancer patients

NCT ID NCT04861194

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

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 Results may not be published yet.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

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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests a precise type of radiation therapy (MRgRT) that aims to protect the nerves and blood vessels needed for erections in 70 men with low- or intermediate-risk prostate cancer. Participants receive 5 high-dose radiation sessions guided by MRI. The goal is to see if this approach can prevent erectile dysfunction while still controlling the cancer.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 70 people

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

Started

Jul 2021

Expected to finish

Aug 2027

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.

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: * Age ≥18 years * Histologically proven adenocarcinoma of the prostate * Low-risk or intermediate-risk prostate cancer according to NCCN risk categories (low risk: T1c-T2a, Gleason score ≤6, and PSA \<10 µg/L; intermediate risk: T2b-T2c or Gleason score 7 or PSA 10-20 µg/L) * Patients with pT1a/b tumor diagnosis after transurethral resection of the prostate (TURP) * Domain score of 17-25 on the International Index of Erectile Function-5 (IIEF-5) questionnaire * Karnofsky score of 70-100 * Written informed consent Exclusion Criteria: * Use of (neo-)adjuvant androgen deprivation therapy * High-risk prostate cancer according to NCCN risk categories (T3a or Gleason score 8-10 or PSA \>20 µg/L) * Patients with "bulky" iT3 tumor diagnosis * Previous pelvic irradiation or radical prostatectomy * Clinical evidence of metastatic disease * Patients who are unable to undergo MRI * Patients who are incompetent to sign written informed consent

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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.

  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.

    Open the record ↗

  3. 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

  • University Medical Center Utrecht

    RECRUITING

    Utrecht, Utrecht, 3584CX, Netherlands

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