Salvage Moderate Hypofractionated Versus Ultrahypofractionated Radiotherapy for Biochemical Recurrence After Radical Prostatectomy in Prostate Cancer

Recruiting now · Phase 3

Conditions studied: Prostate Cancer

In brief

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.

Key facts

Study ID

NCT07500701

Run by

Samsung Medical Center

People needed

270

Starts

2026-03-06

Expected to finish

2034-12-31

Last updated by the study team

2026-03-30

Who can join

Age: 20 and older. Sex: male. Healthy volunteers: not accepted.

You may qualify if…

• Patients who have undergone radical prostatectomy for prostate cancer
• Age ≥ 20 years
• Persistent prostate-specific antigen (PSA) elevation after radical prostatectomy, defined as prostate-specific antigen (PSA) levels of 0.1-1.0 ng/mL with at least three consecutive increases
• Patients who have undergone prostate-specific membrane antigen positron emission tomography/computed tomography (PSMA PET/CT) for evaluation of prostate-specific antigen (PSA) elevation
• Good performance status (ECOG performance status 0-1)

You may not qualify if…

• Radiologic or clinical evidence of gross local recurrence, lymph node metastasis, or distant metastasis, including findings on prostate-specific membrane antigen positron emission tomography/computed tomography (PSMA PET/CT), as determined by the treating physician
• Presence of lymph node metastasis or distant metastasis at the time of radical prostatectomy
• History of prior pelvic radiotherapy
• Diseases associated with a high risk of radiation toxicity (e.g., inflammatory bowel disease, systemic lupus erythematosus, scleroderma, or other connective tissue diseases)
• History of another malignancy diagnosed or recurrent within the past 3 years (except for skin cancer and thyroid cancer)
• Uncontrolled acute or chronic conditions deemed inappropriate for study participation by the investigator (e.g., dementia, Alzheimer's disease, cerebral infarction, etc.)

Where it is running

• Samsung Medical Center — Seoul, Gangnam-gu, South Korea (enrolling)

Full record on ClinicalTrials.gov

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