A Phase 1 interventional study of Islet cell transplantation in Islet Cell Transplantation and Type 1 Diabetes, sponsored by Baylor Research Institute. Withdrawn at 1 site in United States. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2017-02-15.
Sponsored by Baylor Research Institute · Phase 1, Interventional, and Treatment
The purpose of this study is to further test islet cell transplant in patients who have had a kidney transplant. This study will also evaluate the safety and effectiveness of the anti-rejection medications used to prevent rejection after your islet cell transplant.
Diabetes mellitus (DM) type 1 is a disease with significant social and economic impact. The prevalence of the disease in the United States is about 120,000 in individuals aged 19 or less and 300,000 to 500,000 at all ages and 150 million worldwide. There are 30,000 new cases diagnosed each year in the United States. DM is one of the most frequent chronic diseases in children in the United States 1. The cost of treatment and complications of this disease in the United States is 90 billion dollars a year.
To date there are no mechanical devices able to effectively adjust the dose of insulin injected according to the serum glucose levels in patients with DM. This leads to less-than-perfect sugar control, with episodes of hypoglycemia which can be dangerous.
The emerging alternative to whole organ pancreas transplantation is pancreatic islet cell transplantation (ICT). The process is based on the enzymatic isolation of the pancreatic islets of Langerhans from an organ procured from a cadaveric donor 13-15; the islets obtained are injected into the liver of the recipient via percutaneous catheterization of the portal venous system 16. This procedure allows the selective transplantation of the insulin-producing cell population avoiding open surgery as well as the transplantation of the duodenum and the exocrine pancreas and their related morbidity.
The initial efforts with ICT had only modest results. The immunosuppression regimen was similar to the one used in solid organ transplantation, based on high dose steroids and calcineurin inhibitors - both agents with diabetogenic effects. The results improved markedly with the changes in the manipulations of the islets, and the change in immunosuppression thus avoiding the higher doses of steroids and using sirolimus, tacrolimus and daclizumab initiated by the investigators group at the University of Alberta in Edmonton, Canada. Their protocol requires in general two islet cell infusions in order to attain the critical cell mass necessary to achieve insulin-independency. The changes in treatment were adopted as the Edmonton Protocol, which is used in several transplant centers, worldwide.
Isolation of the islets from donor pancreata will occur in the Baylor University Medical Center Islet Cell Processing Laboratory (ICPL). The islet cell infusion is performed in the Interventional Radiology Suite at Baylor University Medical Center or Baylor All Saints Medical Center by an interventional radiologist. The procedure takes place in a suite designed for invasive procedures using sterile technique with access to general anesthesia if necessary. Following the procedure the patient is observed in the Interventional Radiology recovery area for as long as necessary as determined by a Physician and then transferred to the Transplant Service for an overnight stay. After recovery, the patient is admitted to the hospital on the Transplant Service for a 1-2 day observation.
The focus of the research in the ICT is centered on the development of a safe and effective procedure that will eventually replace surgical pancreas transplantation together with an ideal immunosuppressive regimen that provides safe and effective prevention against rejection, while minimizing the adverse events associated that negatively impact transplant recipient's quality of life.
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Unstable diabetes mellitus control despite expert management by a diabetology care team for at least 6 months prior to consideration for transplantation as defined by the following:
Exclusion Criteria:
Patient has previously received or is receiving an organ or bone marrow transplant other than a first kidney transplant.
The process is based on the enzymatic isolation of the pancreatic islets of Langerhans from an organ procured from a cadaveric donor; the islets obtained are injected into the liver of the recipient via percutaneous catheterization of the portal venous system . This procedure allows the selective transplantation of the insulin-producing cell population avoiding open surgery as well as the transplantation of the duodenum and the exocrine pancreas and their related morbidity.
Restoration of sustained euglycemia without exogenous insulin or with reduced insulin dosage in patients who underwent pancreatic islet cell after kidney transplantation
Categorical variables will be analyzed using McNemar's test. Continuous data will be analyzed using repeated measures analysis of variance and Friedman's test when the normality assumption is violated. Follow-up pairwise comparisons will be performed using the Bonferroni multiple comparisons procedure at the 0.05 level of significance. Kaplan Meier estimates for patient and graft survival will be used.
Time frame: 24 months
To assess incidence of hypoglycemic episodes
Time frame: 24 months
To monitor insulin requirements in patients who did not achieve insulin independence
Time frame: 24 months
To assess total islet mass needed to achieve sustained euglycemia with or without exogenous insulin.
Time frame: 24 months
This study is withdrawn, as verified in Feb 2017. You cannot join it, but the record below documents what was studied.
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