Re-establishing Flow Via Drug Coated Balloon For The Treatment Of Urethral Stricture Disease (ROBUST-II)
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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: NCT03270384 |
Recruitment Status :
Active, not recruiting
First Posted : September 1, 2017
Last Update Posted : November 23, 2022
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Condition or disease | Intervention/treatment | Phase |
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Urethral Stricture | Device: Urotronic Drug Coated Balloon (DCB) | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 16 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Device Feasibility |
Official Title: | Re-establishing Flow Via Drug Coated Balloon For The Treatment Of Urethral Stricture Disease |
Actual Study Start Date : | October 25, 2017 |
Actual Primary Completion Date : | November 1, 2019 |
Estimated Study Completion Date : | June 2024 |
Arm | Intervention/treatment |
---|---|
Experimental: Treatment
Up to 15 subjects will be enrolled and treated with the Urotronic drug coated balloon (DCB)
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Device: Urotronic Drug Coated Balloon (DCB)
The Urotronic Drug Coated Balloon (DCB) is a guidewire compatible catheter with a tapered atraumatic tip. The distal end of the catheter has an inflatable balloon coated with a proprietary coating containing the drug paclitaxel that facilitates the drug's transfer to the urethral wall upon inflation. |
- Safety- Rate of Device Related Serious Complications [ Time Frame: 90 days ]
- Safety- Change in IIEF (International Index of Erectile Function) [ Time Frame: 90 days ]
- Efficacy- Stricture Recurrence Rate [ Time Frame: 6 months ]

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | Male |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Male subjects ≥ 18 years' old
- Visual confirmation of stricture via cystoscopy or urethrogram
- Single lesion anterior urethral stricture less than or equal to 3 cm
- Two (2) or more prior diagnosis and treatment of stricture treatments (including self-catheterization) including DVIU (direct visual internal urethrotomy), but no prior urethroplasty
- Significant symptoms of stricture such as frequency of urination, dysuria, urgency, hematuria, slow flow, feeling of incomplete emptying, recurrent UTI's (urinary tract infections).
- IPSS (International Prostate Symptom Score) score of 13 or higher
- Lumen diameter <12F by urethrogram
- Able to complete validated questionnaire independently
- Qmax <12 ml/sec
- Guidewire must be able to cross the lesion
Exclusion Criteria:
- Strictures greater than 3.0 cm long.
- Subjects that have more than 1 stricture.
- Sensitivity to paclitaxel or on medication that may have negative interaction with paclitaxel
- Subjects who have a suprapubic catheter
- Previous urethroplasty within the anterior urethra
- Stricture due to bacterial urethritis or untreated gonorrhea
- Stricture dilated or incised within the last 3 months
- History of over active bladder or stress incontinence
- Previous radical prostatectomy
- Previous pelvic radiation
- Diagnosed kidney, bladder, urethral or ureteral stones or active stone passage in the past 6 months.
- Presence of a penile implant, artificial urinary sphincter, or stent(s) in the urethra or prostate
- Known neurogenic bladder, sphincter abnormalities, or poor detrusor muscle function

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): NCT03270384
United States, Iowa | |
University of Iowa | |
Iowa City, Iowa, United States, 52242 | |
United States, Maryland | |
Chesapeake Urology | |
Hanover, Maryland, United States, 21076 | |
United States, Minnesota | |
University of Minnesota | |
Minneapolis, Minnesota, United States, 55455 | |
Metro Urology | |
Woodbury, Minnesota, United States, 55125 | |
United States, Virginia | |
Urology of Virginia | |
Virginia Beach, Virginia, United States, 23462 |
Principal Investigator: | Sean Elliott, MD | University of Minnesota |
Responsible Party: | Urotronic Inc. |
ClinicalTrials.gov Identifier: | NCT03270384 |
Other Study ID Numbers: |
PR1032 |
First Posted: | September 1, 2017 Key Record Dates |
Last Update Posted: | November 23, 2022 |
Last Verified: | November 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Undecided |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | Yes |
Device Product Not Approved or Cleared by U.S. FDA: | Yes |
early feasibility non-randomized |
Urethral Stricture Constriction, Pathologic Pathological Conditions, Anatomical |
Urethral Obstruction Urethral Diseases Urologic Diseases |