Evaluating radiation dose effects in prostate cancer treatment with 177Lu-PSMA-617

Optimisation and Safety of an Innovative Nuclear Medicine Treatment: Clinical and Dosimetric Study of Patients Treated With 177Lu-PSMA-617 for Prostate Cancer.

Observational Institut Bergonié · NCT06700057

This study is testing how much radiation is given to tumors and nearby organs in patients with advanced prostate cancer who are being treated with a specific drug called 177Lu-PSMA-617.

Quick facts

Study typeObservational
Enrollment50 (estimated)
Ages18 Years and up
SexMale
SponsorInstitut Bergonié Academic / other
Drugs / interventionschemotherapy, prednisone, radiation
Locations1 site (Bordeaux)
Trial IDNCT06700057 on ClinicalTrials.gov

What this trial studies

This observational study aims to assess the radiation dose delivered to tumors and surrounding organs in patients treated with 177Lu-PSMA-617 for metastatic castration-resistant prostate cancer. It involves both retrospective and prospective data collection, utilizing scintigraphic images to perform dosimetric calculations. The treatment regimen consists of six cycles administered at a fixed dose, with patient selection based on PSMA expression evaluated through PET/CT scans. The study is conducted at the Institut Bergonié, where standard treatment protocols are followed without modification.

Who should consider this trial

Good fit: Ideal candidates include adults over 18 with progressive, metastatic, castration-resistant prostate cancer who have undergone prior chemotherapy and hormone therapy.

Not a fit: Patients who do not have PSMA overexpression or those who are not undergoing treatment with 177Lu-PSMA-617 may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance the understanding of radiation dosimetry in prostate cancer treatment, potentially improving patient outcomes and minimizing toxicities.

How similar studies have performed: Other studies have shown promise in evaluating dosimetric approaches in radiopharmaceutical treatments, suggesting potential for success in this area.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Patient aged 18 and over.
2. Patient with indication for or having started or completed treatment with 177Lu-PSMA-617 since 01/11/2023:

   1. Progressive, metastatic, castration-resistant prostate cancer,
   2. overexpressing prostate specific membrane antigen (PSMA)
   3. treated with taxane chemotherapy and at least one 2nd generation hormone therapy (apalutamide, enzalutamide, darolutamide, abiraterone-prednisone).
3. Patient able to lie still for 1 hour for image acquisition.
4. Patient's place of residence \< 2 hours' drive from the Institut Bergonié.
5. Patient has not expressed any opposition to the use of his/her medical data for research purposes.

Exclusion Criteria:

None

Where this trial is running

Bordeaux

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Prostate CancerMetastasisRadiopharmaceutical drug
Last reviewed 2026-06-13 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.