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Fusion Guided Focal Laser Ablation of Prostate Cancer

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT02759744
Recruitment Status : Suspended (This study involves the use of laser fibers but our original manufacturer has discontinued their marketing of product for prostate tissue (instead focusing on b)
First Posted : May 3, 2016
Last Update Posted : February 6, 2023
Information provided by (Responsible Party):
National Institutes of Health Clinical Center (CC)

Brief Summary:


Prostate cancer is the most common non-skin cancer in U.S. men. Treatments for early or less aggressive disease are limited. Researchers want to test a device that destroys cancerous tissue with laser energy. They want to see if using it with ultrasound is more comfortable than using it with magnetic resonance imaging (MRI).


To test a cooled laser applicator system to treat prostate cancer lesions. To see if ultrasound imaging is a practical and feasible treatment with laser ablation for focal prostate cancer treatment.


Men at least 18 years old with prostate cancer seen on MRI that has not spread in the body.


Participants will be screened with standard cancer care tests. These can include physical exam, lab tests, and MRI. For the MRI, they lie in a machine that takes pictures. Participants will have a prostate biopsy. Needle samples will be taken from 12 places in the prostate. This will be guided by MRI and ultrasound, which is obtained through a coil in the rectum.

Participants will stay at the clinic for 1 2 days. A cooling catheter (plastic tube) will be put in the bladder. Ultrasound will guide the laser applicator directly to the tumor.

The cooling catheter will be removed. A different catheter will be put in the urethra to keep the bladder emptied.

The next day, participants will have a physical exam and a PSA blood test.

Participants will have 6 follow-up visits over 3 years. At each visit, they will have a physical exam and lab tests. At some visits, they will also have an MRI or other scans and a prostate biopsy.

Condition or disease Intervention/treatment Phase
Prostate Cancer Prostate Neoplasms Device: ultrasound image-guided ablation device Not Applicable

Detailed Description:


  • Pilot study to evaluate the feasibility of real time ultrasound imaging to guide focal thermal ablation of low risk focal prostate tumors
  • Prostate cancer is relatively slow growing, with doubling times for local tumors estimated at 2 to 4 years.
  • Recent patient series suggest that 20% to 30% of men undergoing radical prostatectomy have pathologic features in the radical prostatectomy

specimen consistent with an insignificant or "indolent" cancer that poses little threat to life or health.

  • An NIH/NCI protocol #11-C-0158 titled MR Image guided focal laser ablation therapy of prostate cancer has treated 15 patients without major complication over the past 5 years. Out of 15 patients, 3 have had evidence of disease recurrence. This data is being prepared for publication (verbal communication with Peter Pinto, MD, principal investigator); however, it requires a very long and resource-intensive MRI imaging, which may be a barrier to broad translation to the community setting. Specialized custom and expensive MRI-compatible equipment is also required. Focal laser ablation for prostate cancer using the Medtronic-Visualase laser is FDA cleared.
  • Focal thermal ablation such as laser ablation or cryosurgery are standard of care therapies for prostate cancer, with cancer control comparable to that of external beam radiotherapy and brachytherapy.
  • NIH / NCI clinical trials have performed MRI + ultrasound (US) fusion biopsy in nearly 1500 patients, greater than 30,000 biopsies over the past 12 years.
  • We propose to perform ultrasound (US) guided focal thermal ablation with fusion visualization and co-display of pre-acquired MRI during the treatment of patients


- To determine the feasibility of treating biopsy-confirmed US-targetable and/or MR-visible,low to intermediate grade prostate tumor(s) using ultrasound (US) image-guided focal interstitial thermal ablation.


  • Patients must have organ confined, biopsy-confirmed, low or intermediate risk prostate cancer that is either US-targetable or MR visible or both.
  • Men greater than or equal to 18 years of age.


  • Pilot study, testing feasibility of ultrasound-guided thermal ablation of focal prostate cancer.
  • A total of 30 patients will be enrolled to yield 20 evaluable patients.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 14 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Device Feasibility
Official Title: Pilot Study of Ultrasound Guided Focal Thermal Ablation of Prostate Cancer
Actual Study Start Date : October 13, 2017
Estimated Primary Completion Date : January 21, 2024
Estimated Study Completion Date : January 21, 2026

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Prostate Cancer

Arm Intervention/treatment
Experimental: 1
ultrasound image-guided focal ablation
Device: ultrasound image-guided ablation device
ultrasound image-guided focal ablation - may be either laser ablation or cryotherapy

Primary Outcome Measures :
  1. To determine the feasibility of treating biopsy-confirmed and MR-visible, low-grade prostate tumor(s) using ultrasound (US) image-guided focal interstitial thermal ablation [ Time Frame: duration of protocol ]
    Assessment of thermal damage outside of intended treatment areas as measured by post contrast MRI, and the frequency of other adverse events and complications.

Secondary Outcome Measures :
  1. To determine changes in imaging and biopsy characteristics after thermal ablation of prostate cancer. [ Time Frame: 3 years after treatment completed ]
  2. To analyze circulating tumor markers and functional markers in individuals with prostate cancer after receiving treatment over time [ Time Frame: 2 weeks after the ablation. ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   No
  • Enrollment open only to current NIH patients enrolled in 16-C-0010.
  • Patients must have clinically localized, non-aggressive, low to favorable intermediate risk prostate cancer as defined per current NCCN guidelines (i.e, including review and determination of pathology and tumor characteristics, Gleason Score, PSA levels, and other assessments as clinically appropriate)
  • Organ confined clinical prostate cancer hat is US-targetable and/ or visualized on MRI-- T1c Tumor identified by needle biopsy (e.g., because of elevated PSA)
  • Prostate cancer diagnosed by transrectal or transperineal US guided standard 12 core needle biopsy or MR image guided needle biopsy, or MR / US fusion guided needle biopsies.


  • Targeted tumors must be considered a safe distance from the urethra, rectal wall, or neurovascular bundle by the Principal Investigator.
  • Must have had a prostate MRI performed at the NIH within 12 months prior to enrollment.
  • Must have had a prostate biopsy performed at NIH within 12 months (+2 months) prior to enrollment.
  • Men greater than or equal to 18 years of age.
  • ECOG performance status less than or equal to 2
  • Patients must have adequate organ and marrow function as defined below:

    • leukocytes greater than or equal to 3,000/mcL
    • absolute neutrophil count greater than or equal to 1,500/mcL
    • platelets greater than 75,000/mcL
    • creatinine within normal institutional limits


  • creatinine clearance greater than or equal to 60 mL/min/1.73 m^2 for patients with creatinine levels above institutional normal.

    • Preoperative clearance by NIH Department of Anesthesia and Surgical Services
    • Ability of subject to understand and the willingness to sign a written informed consent document.
  • Subject understands that this is an experimental protocol and that there are available standard treatment options. These options would include but not be limited to: active surveillance, external beam radiation and brachytherapy, androgen deprivation therapy,

or prostatectomy.


  • Patient unable to commit to follow up.
  • Acute urinary tract infection.
  • Patients with uncontrolled coagulopathies.
  • Altered mental status preventing consent or answering questions during conduct of the trial will be excluded for safety purposes.
  • A serious acute or chronic illness that is determined by the PI to place the patient at unreasonable risk for anesthesia and the procedure.
  • Inability to undergo a contrast enhanced MRI per American College of Radiology and the Clinical Center, Department of Radiology guidelines.
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that, in the opinion of the Principal Investigator, would limit compliance with study requirements.

Information from the National Library of Medicine

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): NCT02759744

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United States, Maryland
National Institutes of Health Clinical Center
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Institutes of Health Clinical Center (CC)
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Principal Investigator: Bradford J Wood, M.D. National Institutes of Health Clinical Center (CC)
Additional Information:
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Responsible Party: National Institutes of Health Clinical Center (CC)
ClinicalTrials.gov Identifier: NCT02759744    
Other Study ID Numbers: 160098
First Posted: May 3, 2016    Key Record Dates
Last Update Posted: February 6, 2023
Last Verified: January 12, 2023

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by National Institutes of Health Clinical Center (CC):
Thermal Ablation
Localized Prostate Cancer
Thermal Damage
PSA Levels
Additional relevant MeSH terms:
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Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Genital Diseases, Male
Genital Diseases
Urogenital Diseases
Prostatic Diseases
Male Urogenital Diseases