Clinical trial Recruiting at 1 site Interventional Ages 60 and up Men only

Adaptive targeted stereotactic radiotherapy for localized prostate cancer

Official title: Intérêt de la radiothérapie Adaptative en stéréotaxie Prostatique

Run by Clinique Sainte Clotilde · NCT07344844 · Data updated 2026-11-12

This tests whether doing a quick low-dose CT scan before each SBRT session to adapt the treatment plan reduces radiation to the bladder and rectum and preserves quality of life for men aged 60 and older with low- or intermediate-risk localized prostate cancer.

Quick facts

Study typeInterventional
Ages60 Years and up
SexMen only
Enrollment100 (estimated)
SponsorClinique Sainte Clotilde
Academic / other
Locations1 site (Saint-Denis)
StatusRecruiting
StartedNovember 18, 2025
Main results expectedMarch 1, 2029
Study endsMay 1, 2029
Registry record updatedJanuary 15, 2026
Trial IDNCT07344844 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Men aged 60 or older with localized low- or intermediate-risk (T1-T2, Gleason 6–7) prostate adenocarcinoma, PSA <15 ng/mL, suitable for radiotherapy, French-speaking, and covered by the French social security system are ideal candidates.

Probably not a fit

Patients with high-risk or metastatic disease, prior prostate or relevant digestive surgery that alters anatomy, those unable to personally provide informed consent, or those who do not speak or read French are unlikely to benefit from this protocol.

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

What this trial studies

This single-center interventional study acquires low-dose CT images before each SBRT session to document anatomical variations such as bladder filling and rectal volume. Investigators determine whether a dosimetric recalculation would have been required and compare cumulative dose to organs at risk between adaptive and non-adaptive approaches. Patient-reported quality of life is collected over 24 months and clinical endpoints include overall and recurrence-free survival. Participants are treated at Clinique Sainte Clotilde in Saint-Denis and must be French-speaking and covered by the French social security system.

Why it matters

Potential benefit: If successful, adaptive SBRT could lower radiation exposure to the bladder and rectum, reduce treatment side effects, and help preserve quality of life while maintaining cancer control.

How similar studies have gone: Previous image-guided and adaptive radiotherapy work for prostate cancer has shown dosimetric improvements and reduced organ-at-risk exposure, but long-term clinical benefits are not yet definitively proven.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Male aged ≥60 years
* Localized prostate cancer of low or intermediate risk (T1-T2)
* Gleason score 6-7
* PSA \<15 ng/mL
* No evidence of metastatic disease
* Radiotherapy indicated for prostate cancer
* Affiliated with or benefiting from a French social security system
* French-speaking patient
* Patient appropriately informed and having signed a written informed consent form

Exclusion Criteria:

* Unable to read, write, or understand French
* Vulnerable patient as defined by Article L1121-6 of the French Public Health Code
* Adult under guardianship, curatorship, or legal protection ("sauvegarde de justice")
* Patient unable to personally provide informed consent according to Article L1121-8 of the French Public Health Code
* Patient already included in another interventional study that could interfere with study outcomes
* History of urological (prostate) or digestive surgery that could influence study outcomes
* Refusal to sign the written informed consent form

Where it's running

  • Clinique Sainte Clotilde
    Saint-Denis, Reunion
    Recruiting

Study contacts

Similar studies

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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.