Recurrence rate after radical prostatectomy following primary staging of high-risk prostate cancer with 68Ga-PSMA PET/CT

Søren Klingenberg*, Jacob Hesselvig Fredsøe, Karina Dalsgaard Sørensen, Benedicte Parm Ulhøi, Michael Borre, Mads Ryø Jochumsen, Kirsten Bouchelouche

*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

7 Citations (Scopus)

Abstract

Background: Accurate primary staging is one of the most important issues for initial management of prostate cancer (PCa) patients to perform an optimal selection of patients for curative intended treatment. 68Ga-Prostate-Specific-Membrane-Antigen (PSMA) PET/CT was found superior to conventional imaging both for detection of recurrence after curative intended treatment and for primary staging. We studied the recurrence rate after radical prostatectomy in high-risk PCa patients primary staged with 68Ga-PSMA PET/CT compared with conventional imaging. Material and methods: The study included 247 D’Amico high-risk PCa patients treated with radical prostatectomy (RP) after primary staging with 68Ga-PSMA PET/CT and a reference group of 137 high-risk patients with RP after conventional imaging (99mTc bone scintigraphy and CT). Recurrence rates were assessed by Cox regression and Kaplan-Meier analysis. Results: The 5-year recurrence-free survival rate was 71.1% in the 68Ga-PSMA PET/CT cohort compared with 56.4% in the conventional imaging cohort. Primary staging by 68Ga-PSMA PET/CT reduced biochemical recurrence (BCR) risk by 42% (HR = 0.58 (0.41–0.83), p =.004). Conclusion: The present data could indicate a lower recurrence rate after RP following primary staging with 68Ga-PSMA PET/CT compared to conventional imaging, likely due to improved selection of patients for surgery.

Original languageEnglish
JournalActa Oncologica
Volume61
Issue10
Pages (from-to)1289-1294
Number of pages6
ISSN0284-186X
DOIs
Publication statusPublished - Nov 2022

Keywords

  • Ga-prostate-specific membrane antigen PET/CT
  • biochemical recurrence
  • primary staging
  • prostate cancer
  • radical prostatectomy

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