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In an earlier Phase 1/2 clinical trial using the Edmonton Protocol of steroid free immunosuppression, investigators at University of Illinois at Chicago (UIC) demonstrated the safety of islet preparation, iset transplantation, and medical treatment at UIC. Therefore, the primary purpose of the present Phase 3 clinical trial is to demonstrate the safety and efficacy of allogeneic islet transplantation in improving glycemic control in Type 1 diabetic patients using the UIC protocol that was developed and proven effective during the Phase 1/2 clinical trial.
This study is a Phase 3 single center, uncontrolled trial in which 1-3 allogeneic pancreatic islet transplants are performed for each study subject. Follow-up evaluations after transplant continue for 52 weeks after the final islet transplantation. Thereafter, subjects may enroll for a 5-year follow-up study to evaluate the function of the islets and to measure and regulate immunosuppressive drug levels and side effects.
The safety of islet transplantation depends primarily on the incidence of serious and unexpected complications or adverse events and the ability of the cell isolation laboratory to produce uncontaminated islet cell preparations with minimal endotoxin content.
All study subjects are followed for safety for one year. An independent Data Monitoring Committee (DMC), composed of 3 members who have training in medicine and/or organ transplantation, will review eligibility and safety data within 2 weeks after each islet transplantation and every two months thereafter. An independent monitor, who is knowledgeable about Good Clinical Practice(GCP)guidelines and regulations, monitors the study for compliance with 21 CFR and according to ICH GCP Guidelines. Within the Clinical Research Center, representatives of the Scientific Advisory Committee and the Research Subject Advocacy Program monitor safety. These entities report to the UIC Institutional Review Board (IRB), which also reviews safety data annually and on occurrence of serious adverse events. The principal investigator also reports serious adverse events to the US Food and Drug Administration(FDA).
Success: Islet transplantation is considered a success when subjects do not use insulin, and they achieve a fasting glucose level not exceeding 140 mg/dL more than three times in a week, and not exceeding two-hour post-prandial values of 180 mg/dL more than four times in a week.
Partial Success: Subjects who have a reduction in insulin requirements but who do not achieve insulin independence and present with a reduction in HbA1c and number of hypoglycemic episodes are considered to have partial success of islet transplantation. Reduction in insulin-requirements are assessed by comparing the pre-transplant insulin requirement recorded over two consecutive days (expressed as insulin units per kg) with the requirement on the two consecutive days preceding the subsequent islet infusion, and the requirements on two consecutive days at six months and again on two consecutive days at one year after the final transplant.
Failure: Absence of measurable levels of C-peptide after transplantation is considered as failure of islet cell transplantation.
Allocation: Non-Randomized, Control: Uncontrolled, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Type 1 Diabetes Mellitus
Islets of Langerhans transplantation
University of Illinois at Chicago Medical Center
University of Illinois
Published on BioPortfolio: 2014-07-24T14:17:40-0400
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The transference of pancreatic islets within an individual, between individuals of the same species, or between individuals of different species.
The time period before the development of symptomatic diabetes. For example, certain risk factors can be observed in subjects who subsequently develop INSULIN RESISTANCE as in type 2 diabetes (DIABETES MELLITUS, TYPE 2).
A subtype of DIABETES MELLITUS that is characterized by INSULIN deficiency. It is manifested by the sudden onset of severe HYPERGLYCEMIA, rapid progression to DIABETIC KETOACIDOSIS, and DEATH unless treated with insulin. The disease may occur at any age, but is most common in childhood or adolescence.
A type of diabetes mellitus that is characterized by severe INSULIN RESISTANCE and LIPODYSTROPHY. The latter may be generalized, partial, acquired, or congenital (LIPODYSTROPHY, CONGENITAL GENERALIZED).
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