NCT05438563 · Mayo Clinic
MRI-guided Transurethral Urethral Ultrasound Ablation for the Treatment of Low to Intermediate Grade Prostate Cancer
What this study is about
This clinical trial tests whether the magnetic resonance imaging (MRI)-guided transurethral ultrasound ablation (TULSA) procedure is safe and effective in treating patients with low to intermediate grade prostate cancer.
View original scientific description
This clinical trial tests whether the magnetic resonance imaging (MRI)-guided transurethral ultrasound ablation (TULSA) procedure is safe and effective in treating patients with low to intermediate grade prostate cancer. MRI-guided TULSA ablation is a minimally invasive procedure that uses an ultrasound device guided by MRI imaging to deliver high-energy sound waves, producing very high temperature to ablate (destroy) tumor cells in a targeted manner. The MRI-guided TULSA procedure may help patients avoid surgery and help improve prostate cancer patients' quality of life.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Age 45-80 years, with \> 10 years life expectancy
- Biopsy-confirmed, NCCN \[Gleason Grade (GG) 1, favorable GG 2 and unfavorable GG3\] intermediate-risk prostate cancer
- Stage =\< T2c, N0, M0
- International Society of Urological Pathology (ISUP) grade group 1, 2, or 3 disease on transrectal ultrasonography (TRUS)-guided biopsy (minimum 8 cores, combination of systematic and MRI fusion-guided) or in-bore biopsy \[minimum 3 cores from each Prostate Imaging-Reporting and Data System (PI-RADS) version (v)2 category \>= 3 lesion\]. Biopsy reported within 12 months of baseline visit, with minimum 6-week interval between biopsy and baseline
- Prostate specific antigen (PSA) =\< 20 ng/mL reported within 3 months of baseline
- Treatment naive
- Planned ablation volume \< 3.0 cm axial radius from the urethra on mpMRI acquired within 6 months of baseline
Exclusion criteria
- Inability to undergo MRI or general anaesthesia
- Suspected tumour \> 30 mm from the prostatic urethra or \< 14 mm from the prostatic urethra
- Prostate calcifications \> 3 mm in maximum extent obstructing ablation of tumor on low-dose pelvic computed tomography (CT)
- Criteria subject to additional review and approval by sponsor. Alternatively, prospective TRUS to query calcifications or susceptibility-weighted MRI if available may be used to assess calcification. Imaging for calcification screening must be dated within 1 year of baseline visit
- Unresolved urinary tract infection or prostatitis
- History of proctitis, bladder stones, hematuria, history of acute urinary retention, severe neurogenic bladder
- Artificial urinary sphincter, penile implant or intraprostatic implant
- Less than 10 years life expectancy
- Patients who are otherwise not deemed candidates for radical prostatectomy (RP)
- Inability or unwillingness to provide informed consent
- History of anal or rectal fibrosis or stenosis, or urethral stenosis, or other abnormality challenging insertion of devices
Where
- Rochester, Minnesota
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Sep 9, 2025 · Source of record for eligibility and locations