Focal treatment for localized prostate cancer using irreversible electroporation

Prostate Cancer IRE Study (PRIS) - A Randomized Controlled Trial Comparing Focal to Radical Treatment in Localized Prostate Cancer

NA · Karolinska Institutet · NCT05513443

This study is testing if a new treatment called irreversible electroporation can effectively treat localized prostate cancer in men and improve their quality of life compared to standard treatments.

Quick facts

PhaseNA
Study typeInterventional
Enrollment184 (estimated)
Ages40 Years and up
SexMale
SponsorKarolinska Institutet (other)
Drugs / interventionschemotherapy, radiation
Locations1 site (Stockholm, Solna)
Trial IDNCT05513443 on ClinicalTrials.gov

What this trial studies

This study evaluates the feasibility of treating localized prostate cancer diagnosed through MRI and biopsies using irreversible electroporation (IRE) compared to conventional radical treatments. The primary objective is to assess cancer control and health-related quality of life outcomes in men with unifocal localized prostate cancer. It is a randomized controlled trial that will analyze functional outcomes, adverse events, and survival rates over a 12-month period. The study includes patients from four hospitals in Stockholm County.

Who should consider this trial

Good fit: Ideal candidates are men aged 40 and older with clinically significant intermediate-risk localized prostate cancer that is MRI-visible.

Not a fit: Patients with a history of prostate cancer treatment or severe comorbidities may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could provide a less invasive treatment option with fewer side effects for patients with localized prostate cancer.

How similar studies have performed: Other studies have shown promise with focal therapies for prostate cancer, but the use of IRE specifically is still being explored.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age at inclusion ≥ 40 years
* MRI-visible lesion

  * EPE 3\* \<1.5 cubic cm3 lesion volume
* Gleason score 3 + 4 or 4 + 3 from a single MRI-visible lesion without any Gleason grade 4 in systematic biopsies outside of the target
* PSA level ≤ 20 ng/ml
* Clinical stage ≤ T2c disease
* Unifocal significant disease
* Life expectancy of ≥ 10 years
* Sufficient proficiency in the Swedish language to understand written and verbal information about the trial, its consent process and the study questionnaires

  * Extraprostatic extension; 5-grade Likert scale 1=

Exclusion Criteria:

* Intraductal tumour
* History of treatment for prostate cancer; surgery, radiation, chemotherapy or hormonal treatment
* History of cardiac arrythmias
* Pacemaker
* Renal insufficiency; GFR\<30
* Severe illnesses such as concomitant cancers, severe cardio-vascular disease or dementia
* Contraindications for magnetic resonance imaging (MRI) e.g. magnetic cerebral clips, cochlear implants or severe claustrophobia
* History of bladder cancer
* History of previous pelvic radiotherapy

Where this trial is running

Stockholm, Solna

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.

View on ClinicalTrials.gov →

Conditions: Prostate Cancer, Focal treatment, IRE

Last reviewed 2026-05-15 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.