Clinical trial Recruiting at 1 site Interventional Ages 18 and up Men only

Comparing blood PSMA-positive tumor cells with PSMA PET imaging and outcomes in prostate cancer

Official title: Prostate Cancer Burden and Heterogeneity Evaluation Towards Liquid Biopsy: a Correlation Study to 18FDCFPyL PET and Patients Outcome

Run by Institut Claudius Regaud · NCT06917781 · Data updated 2026-11-12

This will test whether PSMA-positive circulating tumor cells in a blood sample match 18F-PSMA PET scan results and help predict outcomes for people with prostate cancer getting PSMA PET imaging.

More Prostate Cancer trials

Quick facts

Study typeInterventional
Ages18 Years and up
SexMen only
Enrollment80 (estimated)
SponsorInstitut Claudius Regaud
Academic / other
Locations1 site (Toulouse)
StatusRecruiting
StartedOctober 28, 2025
Main results expectedOctober 2027
Study endsOctober 2028
Registry record updatedNovember 18, 2025
Trial IDNCT06917781 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18) with histologically confirmed prostate adenocarcinoma who are scheduled for 18F-PSMA PET imaging, can give informed consent, and are affiliated with French social health insurance.

Probably not a fit

Patients with neuroendocrine prostate cancer, concurrent PSMA-expressing non-prostate cancers, contraindications to PSMA PET, or who cannot provide informed consent are unlikely to benefit from this protocol.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This prospective, single-center proof-of-concept study enrolls adults with histologically confirmed prostate adenocarcinoma who are referred for 18F-PSMA PET imaging. Each participant gives a blood sample before their standard PET scan to detect PSMA-positive circulating tumor cells (CTC-PSMA). Imaging will be used to classify tumor burden into no, low/medium, or high-volume groups and those results will be correlated with CTC-PSMA status and subsequent clinical outcomes. The study aims to determine whether a liquid biopsy can mirror PSMA PET findings and relate to patient prognosis.

Why it matters

Potential benefit: If successful, a blood test for PSMA-positive circulating tumor cells could offer a less invasive way to reflect imaging tumor burden and help guide prognosis or monitoring.

How similar studies have gone: Previous work has separately measured PSMA PET imaging and PSMA-positive circulating tumor cells, but direct correlations with imaging and outcome data are limited, making this a relatively novel proof-of-concept.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Age ≥ 18 years
2. Histologically confirmed adenocarcinoma of the prostate
3. Indication for 18F-PET-PSMA imaging
4. Signed written informed consent
5. Patient able to participate and willing to give informed consent prior performance of any study-related procedures and to comply with the study protocol
6. Patient affiliated to a Social Health Insurance in France.

Exclusion Criteria:

1. Patients with a contraindication to 18F-PET-PSMA
2. Patient with an established neuro endocrine prostate cancer
3. Concurrent malignancy known to express a significant amount of PSMA (renal cancer, salivary gland tumors)
4. Any psychological, familial, geographic or social situation, according to the judgment of investigator, potentially preventing the provision of informed consent or compliance to study procedure
5. Patient who has forfeited his freedom by administrative or legal award or who is under legal protection (curatorship and guardianship, protection of justice).

Where it's running

  • Iuct-O
    Toulouse, France
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.