Clinical trial Recruiting at 6 sites Phase 3 Interventional Ages 18 and up

Comparing short and long-term hormone therapy with radiation for prostate cancer

Official title: Short Versus Long-term Androgen Deprivation Therapy Combined With Salvage Radiotherapy in Prostate Cancer Patients With Biochemical Recurrence After Prostatectomy: a Multicentre Phase III Randomised Controlled Trial

Run by Instituto de Investigación en Oncología Radioterápica - Fundación Española de Oncología Radioterápic · NCT05781217 · Data updated 2026-11-12

This study tests whether short-term or long-term hormone therapy combined with radiation is better for men with prostate cancer who have had a recurrence after surgery.

More Prostate Cancer trials

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment534 (estimated)
SponsorInstituto de Investigación en Oncología Radioterápica - Fundación Española de Oncología Radioterápic
Academic / other
Locations17 sites (L'Hospitalet de Llobregat, Barcelona and 16 other locations)
StatusRecruiting
StartedMarch 14, 2023
Main results expectedDecember 2023
Study endsDecember 2032
Registry record updatedNovember 18, 2023
Trial IDNCT05781217 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include men with histologically-confirmed prostate cancer who have undergone radical prostatectomy and are experiencing biochemical recurrence.

Probably not a fit

Patients with low-risk prostate cancer or those who have not undergone radical prostatectomy 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 short versus long-term androgen deprivation therapy (ADT) combined with salvage radiotherapy in patients with prostate cancer who have experienced biochemical recurrence after radical prostatectomy. The study aims to clarify the optimal duration of ADT in conjunction with radiotherapy, addressing a longstanding debate in clinical practice. Patients will be monitored for biochemical relapse-free survival, particularly focusing on those with adverse prognostic factors. The trial includes various interventions such as triptorelin, goserelin, and leuprorelin.

Why it matters

Potential benefit: If successful, this study could provide clearer guidelines on the optimal duration of hormone therapy, potentially improving outcomes for prostate cancer patients.

How similar studies have gone: Previous studies have shown varying success with similar approaches, but this trial aims to provide more definitive evidence on the duration of ADT in conjunction with radiotherapy.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Patients with histologically-confirmed prostate cancer treated with radical prostatectomy. Patients who have not undergone lymph node dissection are eligible for inclusion.
2. Biochemical recurrence after prostatectomy: BCR is defined as a PSA value ≥ 0.2 ng/mL, with at least one confirmatory PSA determination ≥ two weeks after the first test (the confirmatory PSA level must be higher than the initial value). Patients with Gleason 8-10, pT3b or R1 are eligible for inclusion in the trial with PSA ≥ 0.15 ng/mL; however, in patients with PSA \> 0.4 ng/mL, imaging tests (conventional CT and bone scans or advanced imaging techniques such as PSMA or choline PET/CT) should be performed to check for metastases. In patients with PSA levels between 0.15 and 0.4 ng/mL, no further tests are required to check for distant metastases prior to inclusion.
3. Intermediate and high-risk patients according to the classification criteria proposed by González San Segundo et al. (18):

   CHARACTERISTICS INTERMEDIATE RISK (≥ 2) HIGH RISK(≥ 1)

   PSA at diagnosis, ng/mL 0.6-1.0 ≥1.0 PSA doubling time, months 6-12 \< 6 GLEASON / ISUP 7/3 ≥8/≥4 TNM (prostatectomy specimen) pT2-3a pN0-Mx pT3b pN0-Mx Time to biochemical recurrence, months \>18 \<18 Margins Positive Positive
4. Testosterone level \> 150 ng/dL at inclusion
5. ECOG 0-1
6. Life expectancy \> 5 years
7. Signed informed consent

Exclusion Criteria:

1. Presence of pN1 disease in the original surgical specimen
2. Presence of macroscopic disease on imaging tests. If the PSA at diagnosis is \> 0.4 ng/mL, then imaging tests (CT and bone scan and/or PET/CT or body magnetic resonance imaging \[MRI\]) are required.
3. PSA \<0.2 or \<0.15 ng/mL (if Gleason score=10, pT3b, or R1 in the radical prostatectomy specimen).
4. Previous pelvic radiotherapy
5. Radiotherapy contraindicated
6. Ongoing treatment with ADT or PSA-modulating drugs (e.g., finasteride, dutasteride, high dose steroids)
7. Inability to understand the treatment protocol or sign informed consent

Where it's running

  • Hospital Universitario Quirón Madrid
    Pozuelo de Alarcón, Madrid, Spain
    Recruiting
  • Hospital San Francisco de Asís
    Madrid, Spain
    Recruiting
  • Hospital Gregorio Marañón
    Madrid, Spain
    Recruiting
  • Hospital Ramón y Cajal
    Madrid, Spain
    Recruiting
  • Hospital Ruber Internacional
    Madrid, Spain
    Recruiting
  • Hospital Universitario Fundación Jiménez Díaz
    Madrid, Spain
    Recruiting
Show 11 more locations
  • Instituto Catalán de Oncología Hospitalet
    L'Hospitalet de Llobregat, Barcelona, Spain
    Not yet recruiting
  • Hospital Universitario de Fuenlabrada
    Fuenlabrada, Madrid, Spain
    Active not recruiting
  • Hospital de Cruces
    Barakaldo, Vizcaya, Spain
    Not yet recruiting
  • Hospital Universitario Vall d'Hebron
    Barcelona, Spain
    Not yet recruiting
  • Hospital Clinic de Barcelona
    Barcelona, Spain
    Not yet recruiting
  • Hospital de la Santa Creu i Sant Pau
    Barcelona, Spain
    Not yet recruiting
  • Hospital Clínico San Carlos
    Madrid, Spain
    Not yet recruiting
  • Hospital Universitario de La Paz
    Madrid, Spain
    Not yet recruiting
  • Hospital Universitario HM Sanchinarro
    Madrid, Spain
    Active not recruiting
  • Hospital Universitario Sant Joan de Reus
    Tarragona, Spain
    Active not recruiting
  • Hospital Universitario y Politécnico de La Fe
    Valencia, Spain
    Not yet 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.