Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Impact of [18F]PSMA-1007 PET/CT Comparative to [18F]FLUOROCHOLINE PET/CT on Treatment Decision for Prostate Cancer Patient on Biological Recurrence: A Multicentric Prospective Observational Study

Version 1 : Received: 7 November 2023 / Approved: 8 November 2023 / Online: 8 November 2023 (10:30:04 CET)

How to cite: FEVRIER, A.; Bouron, C.; De Vries, M.; Medhioub, O.; Lacoeuille, F.; Mention, P.-J. Impact of [18F]PSMA-1007 PET/CT Comparative to [18F]FLUOROCHOLINE PET/CT on Treatment Decision for Prostate Cancer Patient on Biological Recurrence: A Multicentric Prospective Observational Study. Preprints 2023, 2023110538. https://doi.org/10.20944/preprints202311.0538.v1 FEVRIER, A.; Bouron, C.; De Vries, M.; Medhioub, O.; Lacoeuille, F.; Mention, P.-J. Impact of [18F]PSMA-1007 PET/CT Comparative to [18F]FLUOROCHOLINE PET/CT on Treatment Decision for Prostate Cancer Patient on Biological Recurrence: A Multicentric Prospective Observational Study. Preprints 2023, 2023110538. https://doi.org/10.20944/preprints202311.0538.v1

Abstract

Purpose: Prostate cancer is the most common male prevalent malignancy in Europe. Biological recurrence occurs in 20-40% of patients within 10 years following treatment. [18F]F-Choline PET/CT is the most used technique for detecting recurrent disease but is rarely positive for low PSA levels. [18F]PSMA-1007 PET/CT allows early detection of recurrence sites. Methods: We conducted a prospective multicenter study. Each patient had access to a [18F]F-Choline and [18F]PSMA PET/CT. The primary endpoint was to determine the therapeutic impact of the [18F]PSMA comparative to [18F]F-Choline PET/CT. Secondary endpoints were the diagnostic performance and the correlation between PET/CT parameters and prognostic factors of prostate disease. Results: 47 patients were included. A therapeutic modification was observed in 36% of them between what the clinicians expected after the [18F]F-Choline PET/CT and what they finally decided after the [18F]PSMA PET/CT. Diagnostic performance of [18F]F-Choline was 28% versus 70% for [18F]PSMA with a significant difference. With [18F]PSMA PET/CT, there was a significative correlation between PSA level of biological recurrence and SUVmax but not between ISUP score and SUVmax of the selected lesion. Conclusion: This study found a modification in therapeutic management following [18F]PSMA PET/CT in one third of patients. This change could result in earlier and better management with detection of lesions at a lower PSA level than is possible with [18F]F-Choline.

Keywords

[18F]PSMA-1007 PET/CT; [18F]F-Choline PET/CT; prostate; therapeutic management; PSA level; SUVmax

Subject

Medicine and Pharmacology, Oncology and Oncogenics

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