Clinical trial Recruiting at 1 site Phase 2 Interventional Ages 18 and up Men only

Comparing two types of radiation therapy for prostate cancer after surgery

Official title: A Phase II Randomized Trial of Moderate Versus Ultra-hypofractionated Post-prostatectomy Radiation Therapy

Run by University of Michigan Rogel Cancer Center · NCT05038332 · Data updated 2026-11-12

This study is testing whether a shorter, five-session radiation therapy for prostate cancer after surgery helps patients feel better compared to a longer treatment that takes several weeks.

More Prostate Cancer trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexMen only
Enrollment136 (estimated)
SponsorUniversity of Michigan Rogel Cancer Center
Academic / other
Drugs / interventionsradiation
Locations1 site (Ann Arbor, Michigan)
StatusRecruiting
StartedNovember 12, 2021
Main results expectedNovember 2026
Study endsNovember 2029
Registry record updatedJanuary 16, 2026
Trial IDNCT05038332 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include men aged 18 and older with confirmed prostate cancer who have undergone radical prostatectomy and have a PSA level of 0.1 ng/mL or higher.

Probably not a fit

Patients with a history of pelvic radiation therapy or evidence of distant metastatic disease 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 study aims to compare the quality of life reported by prostate cancer patients two years after receiving either ultra-hypofractionated radiation therapy (SBRT) or moderately hypo-fractionated radiation therapy following prostatectomy. The conventional treatment typically requires 4-8 weeks of therapy, which can be burdensome and may lead to lower utilization of salvage radiotherapy. In contrast, the ultra-hypofractionated approach reduces the treatment duration to just 5 sessions over 2 weeks, potentially easing the treatment burden on patients. The study will assess the impact of these two approaches on patients' quality of life using the EPIC-26 questionnaire.

Why it matters

Potential benefit: If successful, this study could provide a more efficient and less burdensome radiation therapy option for prostate cancer patients post-surgery.

How similar studies have gone: Other studies have shown promising results with ultra-hypofractionated radiation therapy, indicating potential for success in this approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Men age ≥ 18 with histologically confirmed prostate cancer after radical prostatectomy with a PSA ≥ 0.1 ng/mL
* Interval between prostatectomy and planned radiation therapy start date ≥ 6 months
* KPS ≥ 70
* Patients with equivocal pelvic lymph nodes on imaging are eligible if the nodes are ≤ 1.5 cm in the short axis (equivocal evidence of metastatic disease outside of the pelvis on standard imaging requires documented negative biopsy)
* Ability to complete the EPIC-26 quality of life questionnaire
* Ability to obtain tissue from radical prostatectomy specimen for review by Michigan Medicine Pathology
* Ability to understand and the willingness to sign a written informed consent.

Exclusion Criteria:

* Prior history of pelvic radiation therapy
* History of moderate/severe or active Crohn's disease or ulcerative colitis
* History of bladder neck or urethral stricture
* Evidence of distant metastatic disease or nodal involvement beyond the common iliac vessels
* Initiation of androgen deprivation therapy with a LHRH / GnRH agonist or antagonist greater than 6 months prior to enrollment or receipt of any non-LHRH / GnRH agonist or antagonist androgen deprivation or anti-androgen therapy
* History of another invasive malignancy within the previous 3 years except for adequately treated squamous or basal cell skin cancer
* Any condition that in the opinion of the investigator would preclude participation in this study

Where it's running

  • University of Michigan Rogel Cancer Center
    Ann Arbor, Michigan, United States
    Recruiting

Study contacts

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.