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Can a gel cushion shield the rectum during prostate radiation?

NCT ID NCT06594887

NEW Symptom relief Sponsor: Princeton ProCure management, LLC. 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 21, 2026 · Last updated Sep 21, 2026

Summary

Researchers are studying whether placing a spacer between the prostate and rectum can protect the rectum during proton beam therapy for localized prostate cancer. The trial enrolls up to 50 adults with early-stage prostate cancer who are scheduled for this radiation. Participants receive either a hydrogel spacer or a biodegradable balloon spacer before treatment. The study measures how far the spacer separates the prostate from the rectum and how much radiation reaches the rectum.

What this could mean

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

Active substance
A hydrogel spacer or a biodegradable balloon spacer placed between the prostate and rectum
What this could lead to
If the spacers hold the prostate away from the rectum as intended, this could lower rectal radiation exposure and may reduce bowel side effects from proton beam therapy.
What could go wrong
The study is small and does not compare spacer use against no spacer, so it cannot prove that spacers improve outcomes. Spacer placement is a procedure and carries risks such as infection, pain, or the spacer moving out of position.

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 50 people

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

Started

Sep 2024

Expected to finish

Jun 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 1. Subjects greater than 18 years old with prostate cancer 2. Subjects must have histologically confirmed adenocarcinoma of the prostate with biopsy taken within 12 months and must be planned to undergo proton beam therapy with rectal spacer 3. Subjects must have clinical stage T1-T3 with no posterior extra capsular extension of the prostate cancer 4. PSA less than or equal to 20 ng/mL 5. Gleason Score less than or equal to 7 6. Capacity to comprehend and readiness to sign a written informed consent form Exclusion Criteria 1. Planned Pelvic lymph node radiotherapy. 2. Metastatic disease. 3. Prior local prostate cancer therapy 4. Active Inflammatory bowel disease requiring treatment with steroids. 5. Prior radical prostatectomy. 6. Active urinary tract infection. 7. Acute or chronic inflammation or infection of the prostate.

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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

Contacts and locations

Locations

  • Procure Proton Therapy Center

    Somerset, New Jersey, 08873, United States

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