Clinical trial Recruiting at 2 sites Interventional Ages 20 and up Men only

Comparing two types of radiation therapy for prostate cancer recurrence after surgery

Official title: Comparison of Salvage Hypofractionated Accelerated Versus Standard Radiotherapy for Biochemical Recurrence After Radical Prostatectomy (SHARE Trial): a Prospective, Randomized Controlled, Open-label, Multi Center, Superiority Study

Run by Asan Medical Center · NCT03920033 · Data updated 2026-11-12

This study is testing whether a new type of radiation therapy works better than the standard treatment for men whose prostate cancer has come back after surgery.

More Prostate Cancer trials

Quick facts

Study typeInterventional
Ages20 Years and up
SexMen only
Enrollment288 (estimated)
SponsorAsan Medical Center
Academic / other
Drugs / interventionsradiation
Locations2 sites (Seoul and 1 other locations)
StatusRecruiting
StartedMay 1, 2019
Main results expectedJanuary 1, 2022
Study endsJanuary 1, 2027
Registry record updatedJanuary 20, 2021
Trial IDNCT03920033 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are men with intermediate- or high-risk prostate cancer who have experienced biochemical recurrence after radical prostatectomy.

Probably not a fit

Patients with clinically gross recurrent tumors, distant metastasis, or a history of pelvic irradiation may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial investigates the effectiveness of hypofractionated, accelerated high dose radiation therapy compared to standard radiation therapy in patients who have experienced biochemical recurrence of prostate cancer following radical prostatectomy. Participants will be randomly assigned to receive either 65 Gy in 26 fractions or 66 Gy in 33 fractions of radiation. The study aims to determine which treatment offers better biochemical control and to assess the associated toxicity and quality of life for patients. Stratification factors include risk groups, androgen deprivation therapy, and PSA levels prior to treatment.

Why it matters

Potential benefit: If successful, this study could provide a more effective radiation therapy option for patients with recurrent prostate cancer, potentially improving their long-term outcomes.

How similar studies have gone: Other studies have shown promising results with hypofractionated radiation therapy, suggesting potential benefits over standard approaches, but this specific comparison is novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Pathologically confirmed intermediate- or high-risk prostate cancer
* Biochemical recurrence after radical prostatectomy (Definition: Serial elevation of PSA over 0.2 ng/mL and \<=1.0 ng/mL)
* ECOG performance status 0-1
* Appropriate values of blood tests within 6 months after enrollment Absolute neutrophil count (ANC) ≥ 1500 cells/mm3 Platelets ≥ 50,000 cells/mm3 Hemoglobin ≥ 8.0 g/dl
* Appropriate values of kidney function within 6 months after enrollment Creatinine \< 2.0 ng/dL
* Appropriate values of liver function within 6 months after enrollment total bilirubin \< 1.5 X maximum normal value alanine aminotransferase or aspartate aminotransferase \< 2.5 X maximum normal value

Exclusion Criteria:

* Clinically gross recurrent tumor
* Presence of distant metastasis
* Presence of pelvic LN metastasis
* History of pelvic irradiation
* History of cryotherapy or brachytherapy for prostate cancer
* Double primary cancer other than skin/thyroid cancer
* Combined serious morbidity

Where it's running

  • Asan Medical Center
    Seoul, South Korea
    Recruiting
  • Samsung Medical Center
    Seoul, South Korea
    Recruiting

Study contacts

  • Principal investigator: Young Seok Kim, M.D., Ph.D. — Asan Medical Center
  • Study coordinator: Young Seok Kim, M.D., Ph.D.
  • Email: ysk@amc.seoul.kr
  • Phone: 82 2 3010 5614

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.