An Evidence-Based Focal Cryotherapy Protocol for Focal Ablation of Intermediate Risk Prostate Cancer

Launched by M.D. ANDERSON CANCER CENTER · Jul 7, 2022

Keywords

ClinConnect Summary

This clinical trial is studying whether a treatment called cryotherapy, which freezes cancer cells, can effectively target and treat the specific areas of the prostate that contain cancer in men with intermediate-risk prostate cancer. The goal is to see if this focused approach can help control the disease while minimizing damage to the surrounding healthy tissue.

To participate in the trial, you must be an English-speaking man aged 65 to 74 with a life expectancy of over 10 years. You should have a confirmed diagnosis of prostate cancer that is confined to the prostate and visible on an MRI scan. If you qualify, you will undergo the cryotherapy treatment and have follow-up visits to monitor your progress. It's important to note that participants should not have had previous treatments for prostate cancer or certain medical conditions that could complicate the procedure. If you're interested, you'll need to sign a consent form agreeing to the study's requirements.

Gender

MALE

Eligibility criteria

• Inclusion criteria:
• • English-speaking adult males
• • Life expectancy over 10 years as assessed by treating physician
• • Prior to enrollment, MRI fusion biopsy of MRI-visible lesion required (as detailed below, which includes systematic biopsy cores)
• • Single focus GG2 or GG3 (additional GG1 allowed up to 6mm, noting that a single focus of disease is defined as an area seen on MRI that may be biopsied multiple times using targeted biopsies and have systematic core biopsies directly adjacent to targeted cores; all of which being considered as from the same focus)
• • Histologically confirmed adenocarcinoma of prostate
• • Organ-confined prostate cancer, clinical stage ≤T2bN0M0
• • Visible tumor on MRI
• • No clear evidence or high suspicion of extraprostatic extension or seminal vesical invasion on MRI
• • Biopsy via transperineal or transrectal approach with at least 2 cores of MRI visible lesions that are PIRADS 2 or higher and 12 core systematic biopsy template (exclusion of cores from systematic template that overlap with targeted cores allowed).
• • Additional performance of microultrasound guided biopsy is allowed though not required. Please note that every effort will be made to correlate microultrasound findings with MRI, in order to determine if positive results are from the same MRIvisible focus. This determination will be made by the surgeon performing the biopsy.
• • Note that GGG 1 disease at sites other than ablation zone are allowed provided these are 6mm or less in size. PSA ≤15 ng/mL, or PSAD \<0.15 if PSA \>15 ng/mL
• • Physician can fully visualize the prostate on transrectal ultrasound on entry biopsy
• • Lesion anatomically amenable to cryotherapy treatment based on treating physician's discretion
• • Willing and able to read, understand and sign the study specific informed consent document
• • Willing and agreeable to comply with study protocol requirements, including focal cryotherapy ablation and all follow up visit requirements
• • Patients must consent to investigative laboratory protocol (such as, but not limited to, 2021- 0560)
• Exclusion criteria:
• • Gleason grade group 4 or 5 disease
• • Medical history or concurrent disease, which in the opinion of the investigator, poses the patient at significant peri-operative risk of complication due to anesthesia or the procedure
• • Active urinary tract infection
• • Any previous treatment for prostate cancer, including radiation therapy, hormonal treatment, biologic therapy for prostate cancer, or chemotherapy
• • Prior TURP or other prostate outlet procedure such as HoLEP, greenlight, microwave ablation, aquablation, UroLift, or simple prostatectomy.
• • Previous rectal surgery (other than hemorrhoidectomy) or history of rectal disease
• • Inability to obtain prostate MRI (ex. due to claustrophobia, pacemaker, or prohibitive implants)
• • Unwilling to consent to laboratory investigative protocol (such as, but not limited to, 2021- 0560)