Title
Phase III Study of Chondrocyte Alginate Gel Suspension in Pediatric Patients With Vesicoureteral Reflux
Phase
Phase 3Lead Sponsor
Food and Drug AdministrationStudy Type
InterventionalStatus
Unknown statusIndication/Condition
Vesicoureteral RefluxIntervention/Treatment
autologous culture chondrocytes ...Study Participants
60OBJECTIVES: I. Determine the safety and efficacy of chondrocyte alginate gel suspension in pediatric patients with vesicoureteral reflux.
II. Determine the long term efficacy of this treatment regimen in this patient population.
III. Evaluate the short and long term avoidance of surgery or antibiotic therapy after this treatment regimen in this patient population.
IV. Estimate the risk:benefit ratio of this treatment regimen in these patients.
PROTOCOL OUTLINE: This is a multicenter study. Patients undergo biopsy of the auricular cartilage for chondrocytes during cystoscopic evaluation on day 1. Chondrocyte alginate gel suspension is injected into the submucosa of the bladder at the vesicoureteral junction between days 40-50. Patients found to have post treatment reflux may be retreated once.
Patients are followed at 1, 3, and 12 months.
PROTOCOL ENTRY CRITERIA: --Disease Characteristics-- Confirmed grade 3 or 4 reflux in at least one ureter by voiding cystourethrogram Breakthrough urinary tract infection despite standard antibiotic therapy OR Persistent reflux unlikely to resolve spontaneously Grade 3: 2 year reflux duration OR 1 breakthrough infection Grade 4: 1 year reflux duration OR 1 breakthrough infection Coexisting grade 1 or 2 reflux OR Resolved reflux (i.e., contralateral to the existing grade 3 or 4 refluxing ureter) allowed No reflux secondary to obstruction or neuropathic disease No gross urological abnormalities (e.g., megaureter requiring ureteral tapering or duplicity of ureters) --Prior/Concurrent Therapy-- Surgery: No prior surgery for correction of reflux No recent prior urological device implantation --Patient Characteristics-- Hematopoietic: No history of bleeding disorders Cardiovascular: No history of hypertension or cardiac disease Pulmonary: No history of pulmonary disease Other: No known allergies to contrast dyes, iodine, or shellfish No contraindications to general anesthesia No prior infections (other than UTIs) No immunodeficiencies No metabolic disease No social situation that would interfere with follow up Not pregnant Negative pregnancy test
