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Trapianto concomitante di alloinnesto di vescica renale e urinaria

22 settembre 2026 aggiornato da: Patricio C. Gargollo, Mayo Clinic

The purpose of this study is to establish if concomitant renal and vascularized urinary bladder allograft transplantation is feasible.

Panoramica dello studio

Stato

Reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

This is a single-center, prospective, single-group unblinded phase I study that will enroll subjects with chronic kidney disease secondary to bladder dysfunction or bladder absence that is refractory to medical treatment and requires surgical intervention to prevent long-term sequelae. The primary inclusion criteria will be patients who are diagnosed with chronic kidney disease secondary to disorders involving the urinary bladder or absence of a urinary bladder. Patients exhibiting "hostile bladders" defined as end filling pressure or detrusor leak point pressure (DLPP) of 40 cm H2O or greater as measured by urodynamic studies or detrusor overactivity with detrusor sphincter dyssynergia will be included. Candidates for renal transplantation will be vetted and approved by the Mayo Clinic multidisciplinary transplant team (MDC). Subjects meeting these primary inclusion criteria can be referred to the PI, co-investigators, or study coordinator to approach for possible participation in this research study.

If the subject still meets all the inclusion and exclusion criteria after the baseline evaluations are completed, the subject will undergo concomitant renal and vascularized urinary bladder allograft transplantation.

Tipo di studio

Interventistico

Iscrizione (Stimato)

30

Fase

  • Prima fase 1

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Backup dei contatti dello studio

Luoghi di studio

    • Minnesota
      • Rochester, Minnesota, Stati Uniti, 55905
        • Reclutamento
        • Mayo Clinic in Rochester
      • Rochester, Minnesota, Stati Uniti, 55901

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

Da 1 anno a 60 anni (Bambino, Adulto)

Accetta volontari sani

No

Sessi ammissibili allo studio

Tutto

Descrizione

Inclusion Criteria:

  • Male or female patients between 1 yr. and 60 years of age.
  • Subject is willing and able to give signed informed consent, or have a legally authorized representative who is willing and able to give consent. Informed assent will be required for children 6-17 years of age as appropriate or warranted.
  • Patients with CKD secondary to neurogenic bladder, lower urinary tract obstruction or other disorders of the urinary bladder.
  • Medical need for a bladder transplant, as defined by the presence of exhibiting "hostile bladders" defined as end filling pressure or detrusor leak point pressure (DLPP) of or greater than 40 cm H20 or at below estimated bladder capacity for age, or detrusor overactivity with detrusor sphincter dyssynergia, or new onset of upper urinary tract changes (hydronephrosis, vesicoureteral reflux) in the last 12 months
  • If a concomitant kidney transplant is being considered, additionally, estimated GFR less than or equal to 20 mL/min or dialysis. If GFR 20-25 mL/min would also qualify if expected progression is rapid (>10 mL/min/year)
  • Vetting and approval by the Mayo Clinic multidisciplinary transplant team (MDC) for renal transplantation.
  • Ability of subject and/or care provider to be successfully trained in clean intermittent catheterization and bladder cycling. Or current use of CIC.
  • Utilization of maximally-tolerated dose and regimen of medical therapy (e.g. anticholinergics) or failure to tolerate/contraindications to such agents.
  • Psychosocial clearance: Demonstrated commitment to psychological evaluation perioperatively, in which the psychologist must confirm that the subject has the maturity and stable psychosocial environment necessary for this research study.
  • Agree to avoid pregnancy for 1 year after surgery through abstinence or approved contraception as noted in Appendix A (female subjects only)
  • If patient has a history of malignancy (with the exception of localized non-melanoma skin cancer) the patient must be at least 5 years from termination of treatment without evidence of recurrent disease.

Exclusion Criteria:

  • They are pregnant or breastfeeding, or planning a pregnancy during the course of the study, or who are of child bearing potential and not willing to continue using an effective method of birth control (i.e. with a low failure rate of less than 1 percent per year including injectables, combined oral contraceptives, some intrauterine devices, sexual abstinence, or a vasectomized partner), or
  • Any contraindication to general anesthesia or evaluation reveals that the subject cannot safely undergo general anesthesia and post-operative recovery due to severe cardiovascular, pulmonary, neurological, metabolic, or rheumatologic disease (requires special consultation)
  • Any contraindication or known anaphylactic or severe systemic reaction to either human blood products or materials of bovine origin
  • Subjects with a current positive (>=5 mm induration for high-risk subjects; otherwise >=10 mm of induration) purified protein derivative (PPD) test are excluded unless they have completed a full course of treatment for latent TB and have a negative chest x-ray film at enrollment.
  • Known history of hypersensitivity to aminoglycosides or fluoroquinolones
  • Use of any investigational product within 3 months
  • Prior participation in the study
  • Currently smoking
  • Current incarceration for any reason
  • Unwillingness, inability, or unlikely compliance of individual and/or primary caregiver with study related schedules procedures, management, or follow -up in the opinion of the PI and/or co-investigators
  • Any circumstance in which the investigator deems participation in the study is not in the subject's best interest
  • Subjects with an ALT or AST value >3 times the upper limit of normal
  • Subjects with acute or chronic abdominal skin infections and/or acute or chronic abdominal inflammatory conditions such as inflammatory bowel disease
  • Subjects with uncontrolled diabetes defined as HgA1c>10, unstable cardiac and/or pulmonary disorders, or bleeding disorders
  • Active malignant neoplasm (with the exception of localized non-melanoma skin cancer) that is untreated, unresponsive to available treatment, or too recently treated to determine relapse risk.
  • Surgical procedure for transplantation cannot be successfully performed for anatomical reasons
  • Life expectancy with successful transplantation is estimated to be <5 years for any reason.
  • There is any other disease, physical examination finding, or clinical laboratory result that provides a reasonable suspicion of a disease or condition that contraindicates the procedure or the interpretation of results or render the subject at high risk for treatment complications, or
  • Serious or uncontrolled psychiatric illness or disorder that could compromise their understanding of, or compliance with, follow-up visits/care after transplant, or
  • Taking medications on specified hourly intervals that may be affected by changes to renal clearance, or
  • Hypertension stage II > 99th percentile, unless they had a complete workup to exclude secondary etiologies other than being overweight, or
  • Presence of severe coagulopathy, (hyper or hypo)
  • Patient is not up to date on current CDC recommended vaccines

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: N / A
  • Modello interventistico: Assegnazione di gruppo singolo
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Intervention group

Patients will undergo a cadaveric donor bladder transplant in addition to or after their kidney transplant rather than using intestinal segments for bladder reconstruction or construction.

This is a single-center, prospective, single-group unblinded phase I study that will enroll subjects with chronic kidney disease secondary to bladder dysfunction or bladder absence that is refractory to medical treatment and requires surgical intervention to prevent long-term sequelae. Patients will undergo a cadaveric donor bladder transplant in addition to or after their kidney transplant rather than using intestinal segments for bladder reconstruction or contruction.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Establish if concomitant renal and vascularized urinary bladder allograft transplantation is feasible.
Lasso di tempo: Year 1-4

The primary endpoint will be bladder compliance and/or the end fill pressure at bladder capacity as assessed by standardized urodynamic measures at 12 months and yearly until year 4 Urodynamic measures assessed multiple times in each subject over the follow up period will be modeled with linear mixed effects models. A discrete time relationship will estimate the mean bladder compliance or end fill pressure at 12 months and yearly until year 4. Models will adjust for baseline value, and random intercepts and slopes will be considered using model fit criteria. From this linear mixed effects model, we estimate the expected change from baseline to 12 months (and yearly until year 4), adjusting for baseline value. Results will be reported as estimated 12 month mean with confidence interval.

Year 1-4
Study the long term function of vascularized bladder allotransplantation in patients receiving a concomitant renal and bladder graft
Lasso di tempo: Year 1-4

End-filling pressure at age-related nomogram derived bladder capacity at baseline, 6 months, 12 months, and 24 months.

a. Ratio of measured bladder volume to age-related nomogram derived bladder capacity at baseline, 2,4, 6, 9, 12, and 48 months Filling pressure at 25, 33, 50, 66, and 75 percent of the age-related nomogram-derived bladder capacities Neurogenic detrusor overactivity Frequency of incontinence episodes . 3. Individual subject data including resolution of vesicoureteral reflux, hydronephrosis or recovery of renal function .

4. Evaluating the effect of improved genitourinary function on overall health and mental health using QoL questionaires 5. Rejection and other histological changes will be monitored with protocol biopsies at month 2, 4, 12, 24, 48 and annually until year 4. For cause biopsies for clinical changes such as decreased compliance or hematuria will also be performed.

Year 1-4

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Incidence of all serious adverse events including unanticipated adverse events
Lasso di tempo: Year 1-4

All adverse events will be captured and graded for severity using Common Terminology Criteria for Adverse Events (CTCAE) scale.

Year 1-4

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Investigatori

  • Investigatore principale: Patricio Gargollo, MD, Mayo Clinic

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Effettivo)

1 giugno 2021

Completamento primario (Stimato)

1 agosto 2027

Completamento dello studio (Stimato)

1 settembre 2027

Date di iscrizione allo studio

Primo inviato

13 ottobre 2020

Primo inviato che soddisfa i criteri di controllo qualità

10 novembre 2020

Primo Inserito (Effettivo)

12 novembre 2020

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

24 settembre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

22 settembre 2026

Ultimo verificato

1 settembre 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • 18-004920
  • W81XWH2010662 (Altro numero di sovvenzione/finanziamento: Department of Defense)

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .