Can a cheek graft rebuild a damaged ureter?
NCT ID NCT07797829
First seen Sep 01, 2026 · Last updated Sep 04, 2026 · Updated 3 times
Summary
This trial tests a surgical technique that uses a tissue graft from the inside of the cheek to repair long strictures, or narrowings, in the upper or middle part of the ureter, the tube that carries urine from the kidney to the bladder. The procedure aims to widen the narrowed area and restore normal urine flow without the need for more invasive surgeries like ileum replacement or kidney re-implantation. Researchers will enroll 25 adults with strictures longer than 2 centimeters and track whether the repair stays open without requiring another procedure.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Buccal mucosal graft ureteroplasty, a surgical procedure that uses a tissue graft from the inside of the cheek to widen a narrowed ureter.
- What this could lead to
- If successful, this technique could offer a less invasive alternative to major surgery for people with long ureter strictures, potentially reducing recovery time and complications.
- What could go wrong
- This is an early-phase study with only 25 participants, so results may not apply to everyone. The surgery carries standard risks like infection, bleeding, or the stricture returning.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Early phase 1
The earliest testing in people: a first look at safety, in a very small group.
- Participants
-
About 25 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
-
Sep 2026
An estimate. Start dates often move.
- Expected to finish
-
Mar 2028
An estimate. End dates often move.
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 years and older
- Sex
-
Anyone
- Healthy volunteers
-
Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Adult patients (age ≥ 18 years) of either sex. * Confirmed diagnosis of long (\>2 cm) upper and middle ureteric strictures, either fresh or recurrent with previous open or endoscopic intervention. Exclusion Criteria: * Malignant ureteric stricture or stricture secondary to active pelvic/retroperitoneal malignancy. * Active urinary tract infection at the time of planned surgery. * Uncorrected coagulopathy or other contraindication to anesthesia/surgery. * Active oral mucosal disease, oral submucous fibrosis or previous bilateral grafting. * Solitary non-functioning kidney on the affected side with differential renal function\<15% on renogram (relative or absolute non-functioning renal unit) unless reconstruction is otherwise indicated. * Pregnancy. * Cases of ureteric avulsion where ileal ureter substitution will be used or cases with complete ureter obliteration no passing guidewire or ureteric catheter.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Ureter stricture are added.
By submitting, you agree to our Terms of use
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
-
The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
-
A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.