Combining SBRT with short-term androgen deprivation for high-risk prostate cancer

Sbrt±sTad for Unfavorable iNtermediate rIsk/High Risk Prostate caNcer (STUNNIN): A Randomized Phase II Study

Phase 2 Interventional Regina Elena Cancer Institute · NCT05557604

This study is testing whether adding a short-term hormone treatment to a type of targeted radiation can help men with high-risk prostate cancer do better than just using radiation alone.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment146 (estimated)
Ages18 Years to 90 Years
SexMale
SponsorRegina Elena Cancer Institute Academic / other
Drugs / interventionschemotherapy
Locations3 sites (Rome, Lazio and 2 other locations)
Trial IDNCT05557604 on ClinicalTrials.gov

What this trial studies

This phase II trial investigates the effectiveness of stereotactic body radiotherapy (SBRT) alone versus SBRT combined with a short course of androgen deprivation therapy in patients with unfavorable intermediate to high-risk prostate cancer. Patients will be randomly assigned to receive either treatment, with all participants undergoing intensity-modulated radiotherapy. The study aims to determine if the addition of androgen deprivation enhances treatment outcomes compared to SBRT alone.

Who should consider this trial

Good fit: Ideal candidates include men with histologically confirmed prostate adenocarcinoma classified as intermediate or high risk, who have not undergone prior local treatment.

Not a fit: Patients with previous prostate surgery, radiotherapy, or chemotherapy, or those unable to undergo necessary imaging or treatment procedures, may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could improve treatment outcomes for patients with high-risk prostate cancer.

How similar studies have performed: Other studies have shown promising results with similar combined treatment approaches in prostate cancer, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Histologically proven prostate adenocarcinoma
* IR or HR in the NCCN definition
* N0M0 at staging with choline or (preferably) PSMA PET-CT;
* ECOG performance status between 0 and 2;

Exclusion Criteria:

* Previous local treatment of the prostate with surgery (radical prostatectomy or cryotherapy)
* Previous radiotherapy to the pelvis
* Previous chemotherapy for malignancy in past 5 years
* Impossibility to implant fiducials for tracking purposes
* Impossibility to undergo MRI of the prostate
* Contraindication to short term AD
* Prostate volume \>90cc

Where this trial is running

Rome, Lazio and 2 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Prostate Cancerneoplasm, prostate cancer,
Last reviewed 2026-06-13 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.