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A PET scan and a blood test may predict which men with advanced prostate cancer will benefit from targeted therapy

NCT ID NCT07723651

Diagnosis 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 23, 2026 · Last updated Jul 24, 2026 · Updated 1 time

Summary

This trial is testing whether a special PET scan (FTT-PET) and a blood test that looks for tumor DNA (ctDNA) can predict how well men with metastatic prostate cancer will respond to PARP inhibitor therapy. The study will enroll about 75 men whose cancers have certain genetic mutations. The goal is to see if these tests can help doctors choose the right treatment for the right patient.

What this could mean

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

Active substance
FTT-PET imaging agent (fluorthanatrace) and EnhanceAR-Seq ctDNA blood test
What this could lead to
If successful, these tests could help doctors identify which men with metastatic prostate cancer are most likely to benefit from PARP inhibitor therapy, avoiding ineffective treatment.
What could go wrong
This is an early-phase diagnostic study with 75 participants. The tests may not prove accurate enough to guide treatment decisions, and results may not apply to 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

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 75 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Mar 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: * Adult male patients 18 years of age or older * mCRPC with confirmed germline or somatic HRR (such as ATM, ATR, BRCA1, BRCA2, CDK12, CHEK2, FANCA, MLH1, MRE11A, NBN, PALB2, or RAD51C for Talazoparib/enzalutamide and ATMm, BRCA1m, BRCA2m, BARD1m, BRIP1m, CDK12m, CHEK1m, CHEK2m, FANCLm, PALB2m, RAD51Bm, RAD51Cm, RAD51Dm, RAD54Lm; gBRCA1m, gBRCA2m; ATMm, BRCA1m, BRCA2m for Olaparib +/- abiraterone) mutations who are scheduled for SOC PARPi therapy. * Lesion size of at least 1.0 cm in longest dimension by imaging. If non-measurable, lesion needs to be clearly detected on other imaging studies such as bone scintigraphy, FDG-PET, PSMA-PET or MRI. * On continuous androgen deprivation therapy (ADT) with appropriately suppressed castrate testosterone levels of \< 50 ng/dL, or prior bilateral orchiectomy. * Serum PSA of 2 ng/mL or greater. * Eastern Cooperative Oncology Group (ECOG) performance status of 0-2. * Able to give informed consent Exclusion Criteria: * Receipt of prior PARP inhibitor therapy in any disease setting. * Patients with other invasive malignancies, with the exception of non-melanoma skin cancer, who had (or have) any evidence of the other cancer that is active at the time of enrollment. * Unable to tolerate approximately 30 min (total time) of PET/CT imaging.

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Conditions

The condition(s) this trial relates to.

castration-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

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    3 sites. 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 of Pennsylvania Abramson Cancer Center

    Philadelphia, Pennsylvania, 19104, United States

  • University of Texas MD Anderson Cancer Center

    Houston, Texas, 77030, United States

  • Washington University School of Medicine

    St Louis, Missouri, 63110, United States

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