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Smart radiation: daily adjustments may spare prostate cancer patients from side effects

NCT ID NCT07276438

Symptom relief Sponsor: Jonsson Comprehensive Cancer Center Source: ClinicalTrials.gov ↗

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 trial tests whether using daily MRI or CT scans to adjust radiation plans in real time can lower side effects for men with localized prostate cancer. 186 participants will receive standard stereotactic body radiation therapy (SBRT) either with or without daily plan adaptation. The main goal is to see if fewer men experience urinary problems within 90 days of treatment.

What this could mean

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

Active substance
Stereotactic body radiation therapy (SBRT) with daily image-guided adaptation
What this could lead to
If successful, this approach could reduce urinary and bowel side effects from radiation therapy for prostate cancer, making treatment safer and more comfortable.
What could go wrong
This is an early-stage trial focused on side effects, not cure rates. The daily adaptation process is complex and may not significantly improve outcomes for all patients.

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 186 people

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

Started

Dec 2025

Expected to finish

Dec 2032

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 * Histologically confirmed, clinically localized adenocarcinoma of the prostate * Staging workup as recommended by the National Comprehensive Cancer Network (NCCN) on the basis of risk grouping * Advanced imaging studies (i.e. prostate-specific membrane antigen \[PSMA\] positron emission tomography \[PET\]/CT and fluciclovine PET/CT scan) can supplant a bone scan if performed first * No evidence of metastatic disease in lymph nodes above the bifurcation of the renal arteries, or in bones or visceral organs (nodal disease identified on a PSMA PET/CT scan below the bifurcation of the renal arteries are amenable) * Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2 * No indication for urgent or emergent radiation * Written informed consent obtained from participant or participant's legal representative and ability for participant to comply with the requirements of the study Exclusion Criteria: * Patients with neuroendocrine or small cell carcinoma of the prostate * Patients with any evidence of distant metastases except that evidence of lymphadenopathy below the level of the renal arteries can be deemed locoregional per the discretion of the investigator * Prior cryosurgery, high-intensity focused ultrasound (HIFU), brachytherapy, or other ablative treatments of the whole prostate * Prior pelvic radiotherapy * History of Crohn's disease, ulcerative colitis, or ataxia telangiectasia * Presence of a condition or abnormality that in the opinion of the Investigator would compromise the safety of the participant or the quality of the data

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Conditions

The condition(s) this trial relates to.

prostate adenocarcinoma prostate cancer prostate carcinoma

As listed by the trial registrant

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

Localized prostate adenocarcinoma Stage I prostate cancer ajcc V8 Stage II prostate cancer ajcc V8 Stage III prostate cancer ajcc V8

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

  • UCLA / Jonsson Comprehensive Cancer Center

    RECRUITING

    Los Angeles, California, 90095, United States

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