Hormonal therapy's effect on prostate cancer recurrence after surgery

The Impact of Adjuvant Androgen Deprivation Following Radical Prostatectomy on Prostate Cancer Recurrence

Phase 3 Interventional Ottawa Hospital Research Institute · NCT05169112

This study tests if giving hormone therapy right after prostate surgery can help prevent cancer from coming back in men at high risk of recurrence.

Quick facts

PhasePhase 3
Study typeInterventional
Enrollment72 (estimated)
Ages18 Years and up
SexMale
SponsorOttawa Hospital Research Institute Academic / other
Drugs / interventionsradiation
Locations3 sites (Halifax, Nova Scotia and 2 other locations)
Trial IDNCT05169112 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the impact of one year of androgen deprivation therapy (ADT) on preventing recurrence of prostate cancer in men who have undergone radical prostatectomy. The study focuses on patients with undetectable PSA levels post-surgery and a significant predicted risk of recurrence. By administering ADT immediately after surgery, the trial aims to determine if this approach can improve cancer outcomes for high-risk patients. The intervention involves the use of Lupron Depot as the hormonal therapy.

Who should consider this trial

Good fit: Ideal candidates for this study are men who have undergone radical prostatectomy and have a predicted risk of PSA recurrence of 25% or higher.

Not a fit: Patients who have previously received ADT or have lymph node metastases may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could significantly reduce the rate of prostate cancer recurrence in high-risk patients after surgery.

How similar studies have performed: While hormonal therapy is commonly used for metastatic prostate cancer, few studies have specifically tested its effectiveness as an adjuvant treatment after surgery, making this approach relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. undetectable PSA (\<0.02 ng/ml) within 16 weeks post-operative;
2. ≥25% predicted risk of PSA recurrence within 5 years of surgery (based on the Kattan nomogram)

Exclusion Criteria:

1. Unwilling to receive ADT;
2. previously received ADT;
3. lymph node metastases
4. allergy to any form of ADT

Where this trial is running

Halifax, Nova Scotia and 2 other locations

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 Cancer
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.