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Timing of Post-prostatectomy PSMA Imaging

Prostate Cancer | Prostatectomy

The investigators will randomize patients presenting with early BCR with a negative baseline PSMA PET/CT, to upfront SRT or surveillance. Early BCR is defined as a PSA relapse of \>0.1 to \<0.3 ng/mL. Patients in the surveillance arm will be monitored with PSA every 3 months. A repeat PSMA PET/CT will be undertaken when the PSA reaches a target level of \>0.5 to \<1.0 ng/mL. Both early radiation treatment and surveillance with repeat PSMA PET/CT imaging are within patterns of practice locally; therefore, the investigators believe that there is clinical equipoise on this subject.

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Participation Requirements

  • Sex:

    MALE

  • Eligible Ages:

    18 and up

Participation Criteria

Inclusion Criteria:

* Histologically-proven prostate cancer
* pT1-T4 pN0/Nx cM0
* PSA at BCR \>0.1 - \<0.3 ng/mL post-radical prostatectomy
* PSMA PET/CT negative at BCR post radical prostatectomy
* Planned SRT to prostate bed +/- pelvic lymph nodes
* ECOG 0 or 1
* Age ≥ 18 years
* Informed consent: All patients must sign a document of informed consent indicating their understanding of the investigational nature and risks of the study before any protocol related studies are performed.

Exclusion Criteria:

* Active or post prostatectomy androgen deprivation use
* Previous pelvic radiotherapy
* Other contraindications to radiotherapy

Study Location

Princess Margaret Cancer Center
Princess Margaret Cancer Center
Toronto, Ontario
Canada

Contact Study Team

Study Sponsored By
University Health Network, Toronto
Participants Required
More Information
Study ID: NCT05008900