Overview
Single-centre, retrospective and prospective observational study. This study aims to evaluate the dose delivered by radiation to the tumour and organs at risk, as a factor predicting response and the appearance of toxicities. Dosimetric calculations are made for each treatment using scintigraphic images acquired following injection of 177Lu-PSMA-617.
Description
The management of patients and the administration of treatment with 177Lu-PSMA are carried out in the usual way in the nuclear medicine department of the Institut Bergonié, and are not modified in any way.
The treatment regimen is standard, with 6 cycles spaced 6 weeks apart at a fixed dose of 7.4 GBq. Patients are selected on the basis of a 68Ga-PSMA-11 PET/CT scan to assess whether PSMA is properly expressed.
Only data are collected for the study and they are derived from the usual management of patients treated with 177Lu-PSMA at the Institut Bergonié: information on the treatment, anatomical data and 177Lu-PSMA fixation in lesions and tissues, scintigraphic images acquired post-treatment, data on monitoring the effects of the treatment, 68Ga-PSMA PET/CT images.
Eligibility
Inclusion Criteria:
- Patient aged 18 and over.
- Patient with indication for or having started or completed treatment with
177Lu-PSMA-617 since 01/11/2023:
- Progressive, metastatic, castration-resistant prostate cancer,
- overexpressing prostate specific membrane antigen (PSMA)
- treated with taxane chemotherapy and at least one 2nd generation hormone therapy (apalutamide, enzalutamide, darolutamide, abiraterone-prednisone).
- Patient able to lie still for 1 hour for image acquisition.
- Patient's place of residence < 2 hours' drive from the Institut Bergonié.
- Patient has not expressed any opposition to the use of his/her medical data for research purposes.
Exclusion Criteria:
None