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5500/20 vs. SABR or Brachytherapy for PRimary OligoMetastatic Prostate Cancer Treatment (PROMPT)
Sponsor: British Columbia Cancer Agency
Summary
We will investigate whether ultrahypofractionation using stereotactic ablative radiotherapy (SABR) or brachytherapy is as well-tolerated as moderately hypofractionated external beam radiotherapy (EBRT) for treating the prostate in patients with oligometastatic prostate cancer. Secondary aims include assessment of progression-free survival (PFS) and overall survival (OS) as well as cost-effectiveness. We hypothesize that ultrahypofractionation will maintain favorable toxicity profiles and quality of life while achieving comparable or better efficacy, thereby providing a convenient and cost-effective alternative to moderately hypofractionated EBRT.
Official title: Moderate Versus Ultra Hypofractionation or Brachytherapy for PRimary OligoMetastatic Prostate Cancer Treatment
Key Details
Gender
MALE
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
168
Start Date
2021-07-12
Completion Date
2033-06-30
Last Updated
2026-02-02
Healthy Volunteers
No
Conditions
Interventions
Hypofractionated external beam radiotherapy
5500 cGy/20 fractions delivered 5 days per week over 4 weeks
High dose rate brachytherapy
A single fraction of 19 Gy is delivered from an automated afterloading Iridium-192 source via interstitial catheters placed under ultrasound guidance
Permanent seed implant
Iodine-125 radioactive seeds are implanted permanently in the prostate in a single procedure under transrectal ultrasound guidance
Stereotactic body radiotherapy
External radiation using SABR technology delivers 36.25 Gy to the prostate in 5 fractions given either once weekly for 5 weeks or every second day over 2 weeks.
Locations (4)
British Columbia Cancer Agency Center for the Southern Interior
Kelowna, British Columbia, Canada
Fraser Valley Cancer Center
Surrey, British Columbia, Canada
Vancouver Cancer Center
Vancouver, British Columbia, Canada
Vancouver Island Cancer Center
Victoria, British Columbia, Canada