Investigating a new treatment approach for metastatic prostate cancer

Duration of Androgen Receptor Pathway Inhibitor and ADT With Metastasis Directed Therapy in Oligometastatic Cancer of the Prostate

Phase 2 Interventional University Health Network, Toronto · NCT05404139

This study is testing if adding a new drug to regular radiation and hormone therapy can help men with metastatic prostate cancer feel better and live longer.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment132 (estimated)
Ages18 Years to 100 Years
SexMale
SponsorUniversity Health Network, Toronto Academic / other
Drugs / interventionsradiation
Locations2 sites (Toronto, Ontario and 1 other locations)
Trial IDNCT05404139 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the effectiveness of adding an androgen receptor pathway inhibitor, abiraterone, to standard radiation and hormone therapy for patients with oligometastatic prostate cancer. Participants are randomly assigned to receive either standard treatment or the combination treatment for 8-9 months, followed by routine follow-ups for up to 5 years. The goal is to determine if this combination improves quality of life compared to standard care alone.

Who should consider this trial

Good fit: Ideal candidates are men over 18 with a recent diagnosis of stage IV castrate-sensitive metastatic prostate cancer and limited metastases.

Not a fit: Patients with significant comorbidities or a history of recent malignancies may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could enhance the quality of life for patients with metastatic prostate cancer.

How similar studies have performed: Other studies have shown promising results with similar approaches, indicating potential for success in this trial.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Age \> 18 years
2. Able to provide informed consent
3. Histologic diagnosis of prostate adenocarcinoma
4. ECOG performance status 0-2
5. Stage IV castrate sensitive metachronous metastatic prostate cancer. diagnosed within 6 months of study enrollment with 1-10 metastases

   1. Maximum one metastatic deposit on conventional imaging (CT or bone scan or MR)
   2. Additional metastases can be detectable by PSMA PET only
6. All sites of disease are amenable to and can be safely treated with radiotherapy
7. Patients decline continuous use of ADT

Exclusion Criteria:

1. Significant comorbidities rendering patient not suitable for ADT, enzalutamide and SBRT
2. History of malignancy within the past 5 years, excluding non-melanoma skin cancer and in-situ cancer, managed non-curatively
3. Prior use of salvage systemic therapy
4. Evidence of spinal cord compression

Where this trial is running

Toronto, Ontario and 1 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 Metastatic 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.