Islet re-transplantation after prior graft failure in adults with type 1 diabetes
Official title: Efficacy and Safety of Islet Re-transplantation After Failure of Beta-cell Replacement
Run by University Hospital, Montpellier · NCT07666789 · Data updated 2026-11-12
This study looks at whether giving another islet transplant after a prior failed graft helps adults with type 1 diabetes who have severe swings in blood sugar.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 20 (estimated) |
| Sponsor | University Hospital, Montpellier Academic / other |
| Locations | 1 site (Montpellier) |
| Status | Recruiting |
| Started | July 31, 2025 |
| Main results expected | September 30, 2026 |
| Study ends | September 30, 2026 |
| Registry record updated | June 24, 2026 |
| Trial ID | NCT07666789 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults (18+) with type 1 diabetes who had a prior islet or pancreas transplant and underwent islet re-transplantation after 2005 following documented graft failure.
✕Probably not a fit
Patients without prior graft failure, without available data, or those not meeting inclusion criteria may not benefit from these findings.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This multicenter retrospective study analyzes adults with type 1 diabetes who had a prior beta-cell replacement and then received an islet re-transplant after graft failure. It examines safety and effectiveness, including graft survival and recurrent hypoglycemia, using data from several French university hospitals. The study notes concerns about alloimmunization from repeated donor exposure and aims to clarify outcomes after second islet transplantation. Interventions are not specified in detail, and eligibility requires documented graft failure and available clinical data. The lead sponsor is University Hospital, Montpellier, with collaboration from additional French centers.
Why it matters
Potential benefit: If successful, findings could inform clinical decisions about offering islet re-transplantation to patients with failed prior grafts and potentially extend graft function.
How similar studies have gone: Previous islet transplantation studies show variable graft survival; this study explores a newer question of repeat transplantation after prior failure, which is less well characterized.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Age ≥ 18 years * Diagnosis of type 1 diabetes * Prior beta-cell replacement therapy : islet transplantation or pancreas transplantation * Islet re-transplantation performed after 2005 * Islet re-transplantation performed after documented beta cell graft failure, defined by undetectable C-peptide and/or recurrence of severe hypoglycemia on insulin therapy * Availability of clinical and biological data required for assessment of study outcomes Exclusion Criteria: * Missing or incomplete data preventing assessment of the primary outcome * Patients who did not meet inclusion criteria
Where it's running
-
Montpellier University Hospital
Montpellier, France Recruiting
Study contacts
- Study coordinator: Orianne OV Villard, MD
- Email: orianne.villard@chu-montpellier.fr
- Phone: +33 467 338 382
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.