Strategies to Improve Islet Survival (CIT-02/08)
Study Design: Clinical Trial
Conditions: Diabetes Mellitus, Diabetes Mellitus, Type 1
Duration: 2008 – 2014
# Recruitment Centers: 2
Treatment: Immunosuppressive medication regimen containing lisofylline
Available Genotype Data: No
Image Summary: No
Transplant Type: Islet Cell Transplant
Does it have dialysis patients: No
Access to samples for Strategies to Improve Islet Survival (CIT-02/08) is currently only available via collaboration. Please contact the parent study to ask about ancillary study opportunities.
Clinical Trials URL:
The CIT consortium conducted a total of 9 studies across North America (CIT02 through CIT08) and the Nordic region (CIT01). CIT08 was a long-term follow-up study for interested participants at the North American sites. The target population is individuals with type 1 diabetes, normal kidney function, and intractable hypoglycemia. All studies treated participants with up to 3 separate infusions of islets. The CIT02 protocol focused on treating islets pre-transplant, and subjects were randomized to receive islets prepared with either Lisofylline or Exenatide. For induction and maintenance immunosuppression, the subjects received rabbit anti-thymocyte globulin (ATG; basiliximab instead of ATG for the 2nd and 3rd transplants, if applicable), etanercept, sirolimus, and tacrolimus in an open-label fashion.
The study aimed to determine the safety and efficacy of islet transplantation when combined with an immunosuppressive medication regimen containing lisofylline (LSF).
The primary outcome measure was the proportion of participants with insulin independence at 75 days following the first transplant infusion. Secondary outcome measures included reduction in insulin requirements, mean amplitude of glycemic excursions, HbA1c levels, and assessment of quality of life.
Individuals who met the following criteria were eligible for the study:
- Clinical history compatible with type 1 diabetes with onset at less than 40 years of age, insulin dependence for at least 5 years at study entry, and a sum of age and insulin dependent diabetes duration of at least 28
- Absent stimulated C-peptide (less than 0.3 ng/mL) 60 and 90 minutes post-mixed-meal tolerance test
- Involvement of intensive diabetes management, defined as: (1) Self-monitoring of glucose values no less than a mean of three times each day averaged over each week; (2) Administration of three or more insulin injections each day or insulin pump therapy; (3) Under the direction of an endocrinologist, diabetologist, or diabetes specialist with at least three evaluations during the 12 months prior to study enrollment
- At least one episode of severe hypoglycemia in the past 12 months prior to study enrollment
- Reduced awareness of hypoglycemia. More information about this criterion, including specific definition of hypoglycemia unawareness, is in the protocol
Exclusion criteria are documented in the study protocol.
This study has been concluded, but results have not yet been published.