Relugolix with SBRT for erectile function recovery after prostate cancer therapy
Official title: REDI-CaP (Recovery of Erectile Dysfunction Induced in Prostate Cancer Patients). Innovative Management of Patients With Unfavorable Intermediate-Risk Prostate Cancer: a Special Focus on Quality of Life and Erectile Function Recovery
Run by National Cancer Institute, Naples · NCT07302451 · Data updated 2026-11-12
This study tests whether men with advanced prostate cancer who stop hormone therapy and receive targeted SBRT can regain erectile function within six months.
Quick facts
| Phase | Phase 2 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | Men only |
| Enrollment | 50 (estimated) |
| Sponsor | National Cancer Institute, Naples Academic / other |
| Drugs / interventions | radiation |
| Locations | 1 site (Naples) |
| Status | Recruiting |
| Started | February 23, 2026 |
| Main results expected | May 31, 2027 |
| Study ends | February 23, 2031 |
| Registry record updated | July 21, 2026 |
| Trial ID | NCT07302451 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are men over 18 with unfavorable intermediate-risk prostate cancer, baseline erectile dysfunction not exceeding moderate severity, suitable prostate volume, and willingness to complete all follow-ups.
✕Probably not a fit
Patients with low-risk or high-risk disease, severe baseline erectile dysfunction, or contraindications to Relugolix or SBRT may derive little to no benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
The trial assigns men to receive Relugolix as androgen deprivation therapy followed by image-guided SBRT. It measures erectile function recovery at six months after stopping hormonal therapy, using the IIEF-5 score with predefined recovery criteria. Participants complete questionnaires on sexual function, quality of life, and financial impact throughout treatment and during follow-up. The study also analyzes how radiation dose and delivery influence cancer control, side effects, and long-term outcomes. Enrollment targets men with unfavorable intermediate-risk prostate cancer who meet specific clinical criteria.
Why it matters
Potential benefit: If successful, participants may experience meaningful recovery of erectile function after completing hormone therapy and radiotherapy.
How similar studies have gone: Prior studies in related approaches suggest potential for functional recovery with hormonal and radiotherapy strategies, but results can vary; this approach explores a specific combination and timing.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Male sex. (This criterion is required for the patient population being studied and for the correct data structuring in CTIS.) * Age \> 18 years; * Diagnosis of prostate cancer via transperineal core biopsy; * Classified as unfavorable intermediate-risk (T2b-2c, PSA ≤ 20 ng/mL, and Gleason score 7(4+3); ISUP grade 3); * Signed informed consent for REDI-CaP protocol; * Signed consent for REDI-CaP data processing; * Prostate volume ≤ 80 cc; * No evidence of prostate capsule invasion (documented by multiparametric MRI of the prostate); * Performance status: 0-1; * Negative total-body CT with contrast and bone scan for metastases; * Negative PSMA PET for secondary lesions; * IIEF-5 score: ≥ 8; * Patient compliance with completing periodic questionnaires and attending regular follow-ups as required by the study. Exclusion Criteria: * Have prostate cancer classified as low-risk, favorable intermediate-risk, or high-risk; * Exhibit erectile dysfunction at baseline (IIEF-5 score: \< 8); * Show positive PSMA PET results for metastases or pelvic lymph nodes; * Have capsular involvement documented by multiparametric prostate MRI; * Have contraindications to radiotherapy and/or hormone therapy; * Are unable to undergo MRI; * Cannot adhere to periodic tests and follow-ups; * Refuse or have contraindications to the implantation of intraprostatic fiducials.
Where it's running
-
Istituto Nazionale Tumori - IRCCS - Fondazione G. Pascale - Napoli
Naples, Italy Recruiting
Study contacts
- Study coordinator: Rossella Di Franco, Radiation Oncologist
- Email: r.difranco@istitutotumori.na.it
- Phone: +39 08117770569
Similar studies
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Personal preferences for avoiding gynecomastia (Stage 1)
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LaserSAFE: Quick in OR imaging to check margins during prostatectomy
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.