Multi-Center Randomized Clinical Trial Irreversible Electroporation for the Ablation of Localized Prostate Cancer
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ClinicalTrials.gov Identifier: NCT01835977 |
Recruitment Status :
Active, not recruiting
First Posted : April 19, 2013
Last Update Posted : December 16, 2020
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Multi-centre Randomized Clinical Trial: 106 patients with confirmed unilateral high-volume low risk (Gleason score 3 + 3) or intermediate risk prostate cancer (Gleason score 3 + 4) will undergo an IRE treatment. These patients will be randomized into one of the two groups of the study.
Group 1: Focal ablation of the prostate at the side of the positive biopsies (focal-ablation) Group 2: Extended ablation of the prostate (extended ablation)
Patients will have an ultrasound of the prostate and the imaging data will be entered into the Planning Software system of the IRE-device. The volume of the prostate is measured and a specified ablation zone will be determined. The patients will be admitted for overnight stay in the hospital on the morning of the scheduled IRE procedure. The IRE will be performed under general anaesthetic and the specified zone identified in the planning stage will be ablated. Two to four IRE electrode needles will be placed into the prostate under ultrasound image guidance with a perineal approach using a brachytherapy grid. When the needles are in place, electric pulses of one to two minutes duration are used to ablate the specified zone. The total procedure time will be approximately 1 hour.
Safety data will be collected and patients will be followed up at 1 day post-operatively, 1 month, 3 months, 6 months and 1, 2 and 3 year(s) post IRE.
Condition or disease | Intervention/treatment | Phase |
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Prostate Cancer | Device: Irreversible Electroporation (Nanoknife) | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 106 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Single (Participant) |
Primary Purpose: | Treatment |
Official Title: | Multi-Center Randomized Clinical Two Arm Intervention Study Evaluating Irreversible Electroporation for the Ablation of Localized Prostate Cancer |
Study Start Date : | June 2015 |
Actual Primary Completion Date : | January 30, 2020 |
Estimated Study Completion Date : | January 2025 |

Arm | Intervention/treatment |
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Active Comparator: Focal ablation
Focal ablation of unilateral histopathologically confirmed, organ confined prostate cancer using IRE
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Device: Irreversible Electroporation (Nanoknife)
Other Name: Nanoknife |
Active Comparator: Extended ablation
Extended ablation unilateral histopathologically confirmed, organ confined prostate cancer using IRE
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Device: Irreversible Electroporation (Nanoknife)
Other Name: Nanoknife |
- Patient experience (side-effects and quality of life) after IRE ablation of prostate cancer [ Time Frame: 5 years ]To determine post procedural side-effects and Quality of life measured by International Prostate Symptom Score (IPSS), International Index of Erectile Function (IIEF) and Functional Assessment of Cancer Therapy-Prostate (FACT-P).
- Oncological efficacy IRE ablation of prostate cancer. [ Time Frame: 5 years ]
To determine if IRE focal ablation procedure is as effective as extended ablation measured by PSA, standardised transrectal biopsies and MRI findings in follow-up.
To determine accurateness of ablation zone detection by MRI.

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Ages Eligible for Study: | 50 Years to 100 Years (Adult, Older Adult) |
Sexes Eligible for Study: | Male |
Accepts Healthy Volunteers: | No |
Inclusion Criteria
- Histologically confirmed organ-confined unilateral prostate cancer with adjacent positive biopsies on transperineal template prostate biopsies or MRI targeted biopsies in combination with systematic biopsies (clinical stage T1c-T2b)
- Gleason sum score 6 or 7
- PSA <15 ng/ml or PSA > 15 ng/mL counselled with caution
- Life expectancy of > 10 years
Exclusion Criteria
- Bleeding disorder as determined by prothrombin time (PT) > 14.5 seconds, partial thromboplastin time (PTT) > 34 seconds, and Platelet Count < 140/uL
- No ability to stop anticoagulant or anti-platelet therapy for 7 days prior the procedure.
- Active urinary tract infection (UTI)
- History of bladder neck contracture
- Anaesthesia Surgical Assignment category IV or greater
- History of inflammatory bowel disease
- Concurrent major debilitating illness
- Prior or concurrent malignancy except for basal cell carcinoma of the skin
- Cardiac history including arrhythmias, ICD or pacemaker
- Prostate calcifications greater than 5 mm.
- Biologic or chemotherapy for prostate cancer
- Hormonal therapy for prostate cancer within 6 months prior to procedure
- Previous radiation to pelvis
- Transurethral resection of the prostate / Urethral stent
- Prior major rectal surgery (except haemorrhoids)

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01835977
Study Chair: | Jean de la Rosette, MD, PhD | Clinical Research Office of the Endourological Society |
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Clinical Research Office of the Endourological Society |
ClinicalTrials.gov Identifier: | NCT01835977 |
Other Study ID Numbers: |
2013249 |
First Posted: | April 19, 2013 Key Record Dates |
Last Update Posted: | December 16, 2020 |
Last Verified: | December 2020 |
Focal therapy Irreversible electroporation Unilateral prostate cancer |
Prostatic Neoplasms Genital Neoplasms, Male Urogenital Neoplasms Neoplasms by Site Neoplasms |
Genital Diseases, Male Genital Diseases Urogenital Diseases Prostatic Diseases Male Urogenital Diseases |