Salvage Moderate Hypofractionated Versus Ultrahypofractionated Radiotherapy for Biochemical Recurrence After Radical Prostatectomy in Prostate Cancer: A Prospective, Multi-Center, Randomized Phase III Non- Inferiority Trial (HUB Trial)

Title: Salvage Moderate Hypofractionated Versus Ultrahypofractionated Radiotherapy for Biochemical Recurrence After Radical Prostatectomy in Prostate Cancer: A Prospective, Multi-Center, Randomized Phase III Non- Inferiority Trial (HUB Trial) NCT ID: NCT07500701 Phase: PHASE3 Status: RECRUITING Sponsor: Samsung Medical Center Conditions: Prostate Cancer Interventions: Moderate hypofractionated radiotherapy (Moderate-hypoRT), Ultra-hypofractionated radiotherapy (Ultra-hypoRT) Enrollment: 270 ESTIMATED Summary: This study is the first prospective, randomized phase III clinical trial designed to evaluate whether ultrahypofractionated radiotherapy is non-inferior to conventionally moderately hypofractionated radiotherapy in terms of efficacy, with acceptable toxicity, in patients who develop biochemical recurrence following radical prostatectomy. Considering the potential clinical benefits of shorter treatment duration, cost reduction, and improved patient convenience, this study is expected to provide important evidence to optimize salvage radiotherapy strategies in routine clinical practice. Description: Moderate hypofractionated radiotherapy (Moderate-hypoRT): 60 Gy in 24 fractions, delivered once daily, 5 days per week (on weekdays), over a total of 5-6 weeks. Ultra-hypofractionated radiotherapy (Ultra-hypoRT): 31 Gy in 5 fractions, delivered every other day (2-3 fractions per week), over a total of 2 weeks.