A multicenter clinical study of the Sonablate® 500 (Sonablate) for the TreAtment of locally Recurrent prostate cancer with HIFU(STAR Trial)

Updated on 25 March 2021


A multicenter clinical study of the Sonablate® 500 (Sonablate) for the TreAtment of locally Recurrent prostate cancer with HIFU(STAR Trial)


Seeking subjects for a research study using high intensity focused ultrasound (HIFU) to treat prostate cancer that has come back after external beam radiation therapy. Subjects enrolled in this study will receive a onetime treatment (outpatient procedure) with HIFU. After treatment you will be asked to come back to the research office at 6 weeks and then 3, 6, 9 and 12 months followed by an annual visit at 2, 3, 4 and 5 years. At these visits you will have blood tests, answer questionnaires, and receive a physical examination. At the 12 month visit, a repeat prostate biopsy will be done to see if the HIFU procedure has been effective. There is no cost for participation in this study. Study centers are available throughout the U.S.

To be eligible to participate in this study, you must meet the following Inclusion Criteria:

  • subjects with initial presentation of organ confined recurrent prostate cancer (Stages T1c and T2 only) who have been treated with EBRT (conventional, 3D conformal, or IMRT) or proton therapy, two or more years prior, and currently have biopsy proven local recurrence. Previous radiation therapy must be a documented therapeutic dose of 60 to 81Gy or GyE (gray equivalent) for proton therapy;
  • negative bone scan within 3 months prior to enrollment to rule out possibility of metastases;
  • negative CT scans of the chest, abdomen, and pelvis within 3 months prior to enrollment to rule out possibility of metastases;
  • age ≥40 years through ≤85 years of age;
  • prostate biopsy with >10 core biopsies demonstrating 1 or more cores positive for cancer cells, within 6 months prior to treatment;
  • prostate volume ≤ 40 gms(cc) (HIFU subject prostate volume will be initially calculated utilizing TRUS measurements during screening and verified with the use of the Sonablate before initiating the HIFU procedure. Patients with prostate volumes greater than 40 gm(cc) as determined by either measurement will not be enrolled in the study);
  • AP diameter of the prostate must be < 4.0 cm;
  • serum prostate specific antigen (PSA) ≥0.5 ng/mL and ≤10 ng/mL;
  • 90 days post hormone therapy usages, subjects who have had or are currently undergoing hormone therapy (GnRH agonist/antagonist) must discontinue hormone therapy and go through a 90 day washout period prior to consideration for study participation, and must remain off hormone therapy throughout the duration of the follow-up period (5 years);
  • signed informed consent for the HIFU treatment through the 12 month follow-up visit (7 visits) and then through the extended follow-up period of 5 years (4 additional visits);
  • life expectancy > 12 months.

You will not be able to participate in this study if you meet the following Exclusion Criteria:

  • American Society of Anesthesiologists(ASA) criteria of IV or higher;
  • intra-prostatic calcifications >1.0 cm (single or continuous grouping) on 2 or more consecutive images along the same plane by either the TRUS or Sonablate 500 measurement will not be enrolled;
  • active, uncorrected bleeding disorder as determined by abnormal prothrombin time, partial thromboplastin time, or INR at the time of HIFU (use institutional lab normal ranges for parameters);
  • use of coumadin or any other anticoagulant, unless anticoagulation can be temporarily reversed or stopped;
  • active urinary tract infection;
  • interest in future fertility;
  • body weight greater than 300lbs;
  • inability to visualize the prostatic tissue adequately on transrectal ultrasound imaging;
  • use of any 5ARI drugs within 3 months prior to enrollment such as Finasteride (Proscar) or Dutasteride (Avodart);
  • a debulking transurethral resection of the prostate (TURP) is not acceptable once the screening biopsy for patient selection has been conducted;
  • prior treatment for prostate cancer, other than EBRT or hormone therapy;
  • history of urethral stent or urethral surgery (urethral dilation, urethroplasty); a Uroflow exam may be conducted at the investigators discretion;
  • prior significant rectal surgery (hemorrhoidectomy is acceptable; rectal resection/fissure repair are excluded);
  • history of inflammatory bowel disease of the rectum;
  • history of any other malignancy treated within the last 5 years, other than squamous or basal cell skin cancer;
  • functional bladder problems defined as IPSS > 19;
  • current bladder cancer, urethral stricture, or bladder neck contracture; a cystoscopy may be performed at the investigator’s discretion to rule out these conditions;
  • urinary tract or rectal fistula;
  • rectal fibrosis/stenosis; anoscopy or proctoscopy may be performed at the investigator’s discretion;
  • anomaly of the rectal anatomy or mucus membrane; anoscopy or proctoscopy may be performed at the investigator’s discretion;
  • prostate seroma/abscess;
  • current symptomatic radiation proctitis requiring creams;
  • participation in other investigational studies, unless approved in writing by the study sponsor.

Condition Prostate Cancer
Clinical Study IdentifierTX134422
Last Modified on25 March 2021


How to participate?

Step 1 Connect with a study center
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer  to help accelerate the development of new treatments and to get notified about similar trials.

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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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