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Can a 2-week drug boost scan accuracy for hidden prostate cancer?

NCT ID NCT07593079

Knowledge-focused Sponsor: Washington University School of Medicine 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 11, 2026 · Updated 3 times

Summary

This study looks at whether taking bicalutamide for two weeks can make PSMA PET/CT scans better at finding small amounts of prostate cancer that standard scans might miss. It involves 20 men with recurrent prostate cancer and very low PSA levels. Participants are randomly assigned to have one scan or two scans (before and after bicalutamide) to compare detection rates.

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

About 20 people

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

Expected to start

Oct 2026

An estimate. Start dates often move.

Expected to finish

Jan 2028

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: * Histologically or cytologically confirmed biochemically recurrent prostate cancer, with original diagnosis no more than 2 years from date of consent. * Intermediate unfavorable or high-risk prostate cancer. * All patients under consideration for radiation therapy, either at the time of first recurrence or in salvage radiation therapy will be included. * Patients who have started bicalutamide up to a maximum of 3 days prior to randomization will be allowed to be on protocol. Otherwise, a washout period of at least 42 days will be required. * Biological males, at least 18 years of age. * Prostate specific antigen (PSA) \< 1.0 ng/mL. * Agreement to adhere to Lifestyle Considerations throughout study duration * Ability to understand and willingness to sign an IRB approved written informed consent document. Exclusion Criteria: * Patients currently on androgen deprivation therapy (ADTs). * Currently receiving any other investigational agents. * A history of allergic reactions attributed to compounds of similar chemical or biologic composition to POSLUMA, furosemide, bicalutamide, or other agents used in the study.

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Conditions

The condition(s) this trial relates to.

hormone-resistant prostate carcinoma metastatic prostate carcinoma prostate cancer

As listed by the trial registrant

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

Metastatic prostate cancer Prostate cancer Prostate cancer metastatic Prostate cancer recurrent Recurrent prostate cancer

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

  • Washington University School of Medicine

    St Louis, Missouri, 63110, United States

More trials for these conditions

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