Extended Follow-Up After Islet Transplantation in T1D

National Institute of Allergy and Infectious Diseases (NIAID)

Status: Completed

Conditions: Islet Transplantation; Type 1 Diabetes (T1D)

Treatments: Drug: Maintenance Immunosuppressive Treatment

Study type: Observational

Funder types: Other; NIH

Identifiers

NCT01369082

DAIT CIT-08

Details and patient eligibility

About

The purpose of this study is to provide patients who have received at least one islet transplant as a previous participant in a Clinical Islet Transplantation Consortium (CIT) clinical trial with maintenance immunosuppressive medications and to collect information about the safety of the medications and islet function.

Full description

After islet-cell transplantation in the CIT studies*, each subject receives maintenance immunosuppressive medications.

The purpose of this protocol is to collect additional follow-up for safety and efficacy from CIT subjects with graft function after their completion in their CIT parent study. It is expected that most subjects will retain measurable islet function and, in the islet-alone studies, continue to receive immunosuppressive medications at the time of completing their CIT parent study.

*CIT parent studies: CIT02 (NCT00464555), CIT03 (NCT00434850), CIT04 (NCT00468403), CIT05 (NCT00468442), CIT06 (NCT00468117), and CIT07 (NCT00434811)

Enrollment: 75 patients

Sex: All

Ages: 18 to 65 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Subjects who have received an islet transplant during participation in the following Clinical Islet Transplantation (CIT) parent studies: CIT02 (NCT00464555), CIT03 (NCT00434850), CIT04 (NCT00468403), CIT05 (NCT00468442), CIT06 (NCT00468117), and CIT07 (NCT00434811)
• A functioning pancreatic islet graft (e.g., absence of graft failure as defined in parent study) requiring immunosuppression
• Willingness of participants to continue to use an approved method of contraception during and 4 months after study participation
• Ability to provide written informed consent
• Resident of the United States of America
• Documentation of the existence or lack of health insurance coverage and whether immunosuppressants are covered.

Exclusion criteria

• For female subjects-Positive pregnancy test, presently breast-feeding, or unwillingness to use effective contraceptive measures for the duration of the study and 4 months after discontinuation
• For male subjects-Intent to procreate during the duration of the study or within 4 months after discontinuation or unwillingness to use effective measures of contraception. Oral contraceptives, Norplant®, Depo-Provera®, and barrier devices with spermicide are acceptable contraceptive methods; condoms used alone are not acceptable.
• Received an islet transplant in a non-CIT research study
• Any medical condition that, in the opinion of the investigator, will interfere with safe participation in the trial.

Trial design

75 participants in 1 patient group

CIT Islet Transplantation Recipients

Description:

Subjects who received an islet-cell transplant for Type 1 Diabetes (T1D) while enrolled in one of the Clinical Islet Transplantation (CIT) parent studies and continue to have islet graft function. All subjects will continue immunosuppressive medications under CIT08. Detailed follow-up evaluations including but not limited to islet function will occur on an annual basis. The immunosuppressive medications (e.g., tacrolimus, sirolimus, cyclosporine, mycophenolate mofetil \[MMF\], mycophenolic sodium) in this study are obtained by prescription unless provided by the study through the drug distributor. Generic brands are allowed, when available. Antibacterial, antifungal, and antiviral prophylaxis, insulin therapy, and other standard therapies will be provided per site-specific practices.

Treatment:

Drug: Maintenance Immunosuppressive Treatment