Comparing Higher Dose Shorter Radiotherapy SBRT to Standard Radiation Plus Brachytherapy Boost for Unfavourable Risk Prostate Cancer in Men Aged 18 and Older

What this Trial Is About

This clinical trial investigates treatment options for men with unfavourable risk localized prostate cancer. Researchers are comparing a newer radiation method called Stereotactic Body Radiation Therapy SBRT, which uses higher doses over fewer sessions with special equipment, against the standard external beam radiation combined with a brachytherapy boost. The study aims to find out if SBRT is as effective as the standard approach in controlling prostate cancer progression. Participants will receive either the standard treatment involving external beam radiation to the pelvis and prostate plus a brachytherapy boost, combined with hormone therapy, or the experimental SBRT treatment delivering higher radiation doses in fewer sessions. Adjuvant androgen deprivation therapy ADT will be given according to risk level, lasting 6 months for intermediate risk and 24 months for high or very high risk. Treatments are assigned randomly to compare outcomes between groups. Throughout the study, participants will be monitored for cancer progression, side effects, and quality of life using questionnaires and medical assessments for up to 8.6 years. Researchers will track progression-free survival, PSA response, metastasis-free survival, and overall survival, as well as participant-reported tolerability and economic outcomes. Safety will be assessed continuously to understand how well participants tolerate the treatments over time.

Androgen Suppression Combined With Nodal Irradiation and Dose Escalated Prostate Treatment