Clinical trial Recruiting at 1 site Observational Ages 18 to 99 Men only

Focal Micro-boost Radiotherapy for Localized Prostate Cancer

Official title: Moderately Hypofractionated Micro-Boost Radiotherapy for Localized Prostate Cancer (62SPECIAL): an Observational Study

Run by Regina Elena Cancer Institute · NCT07792993 · Data updated 2026-11-12

This study tests whether adding a small, targeted boost to MRI-visible prostate lesions during moderately hypofractionated radiotherapy can improve cancer control in men with localized intermediate- to high-risk prostate cancer.

Quick facts

Study typeObservational
Ages18 Years to 99 Years
SexMen only
Enrollment82 (estimated)
SponsorRegina Elena Cancer Institute
Academic / other
Drugs / interventionsRadiation
Locations1 site (Rome, Lazio)
StatusRecruiting
StartedAugust 7, 2025
Main results expectedDecember 30, 2027
Study endsJune 30, 2028
Registry record updatedAugust 28, 2026
Trial IDNCT07792993 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults with localized intermediate- or high-risk prostate cancer, no metastases, ECOG 0-1, eligible for 20-fraction moderately hypofractionated radiotherapy, and with at least one PI-RADS 4 or 5 lesion (or a PI-RADS 3 lesion confirmed positive pathologically).

Probably not a fit

Patients without dominant intraprostatic lesions suitable for boosting or those who do not tolerate intervening therapy may not benefit.

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

What this trial studies

HYPO62 SPECIAL is a single-center, prospective observational cohort that explores a moderately hypofractionated radiotherapy plan with a focal micro-boost to dominant intraprostatic lesions identified by multiparametric MRI. The approach builds on prior data suggesting that escalating dose to the tumor center may improve biochemical control while limiting toxicity. Participants receive whole-gland radiotherapy delivered in 20 fractions, plus a focal boost to MRI-visible dominant lesions. Outcomes of interest include oncologic efficacy and safety/tolerance of this focal boosting strategy. The study is conducted by the Regina Elena Cancer Institute in Rome, Italy, and is non-interventional in design.

Why it matters

Potential benefit: If successful, the strategy could improve biochemical recurrence-free survival while maintaining acceptable toxicity.

How similar studies have gone: Prior studies like FLAME and DELINEATE provide biologic rationale and have shown promising outcomes with focal boosting.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18 years or older.
* Histologically confirmed diagnosis of prostate adenocarcinoma.
* Intermediate or high-risk prostate cancer according to NCCN criteria.
* No regional or distant metastases.
* ECOG performance status 0-1.
* Eligibility for moderately hypofractionated radiotherapy in 20 fractions.
* Presence of at least one PI-RADS 4 or 5 lesion on multiparametric MRI, or a PI-RADS 3 lesion confirmed as positive at pathology.
* Ability to understand the Italian language and adhere to study procedures.
* Written informed consent for participation and data processing.

Exclusion Criteria:

* Previous local prostate treatment with radiotherapy, brachytherapy, cryosurgery, high-intensity focused ultrasound or cryotherapy.
* Previous pelvic radiotherapy.
* Presence of nodal or distant metastases confirmed by MRI or PET/CT.

Where it's running

  • IRCCS Regina Elena National Cancer Institute
    Rome, Lazio, Italy
    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.