T Cell Validation Study Using Blood Samples From Subjects With Recent Onset Type 1 Diabetes Mellitus

May 12, 2016 updated by: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

A Comparative Study Between the Cytokine Elispot, Tetramer, Immunoblot, and T Cell Proliferation Assays Using Fresh Blood Samples From Subjects With Recent Onset Type 1 Diabetes Mellitus

Type 1 diabetes is a condition that is caused in part by an abnormality of the immune system which occurs when T cells, which are part of the immune system, damage the insulin secreting cells (islet cells) in the pancreas. Although it is known that T cells are important mediators of the disease, progress in the development of reliable T cell assays has been modest. The purpose of this study is to learn which T cell assays are most reliable and reproducible so that the investigators can improve their understanding about how type 1 diabetes occurs.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The T Cell Validation Study is designed to determine the ability of T cell assays to identify differences in responses from participants with type 1 diabetes compared to normal control subjects, and to compare four different laboratory tests which examine T cells to determine whether the measurements are quantitatively reproducible.

Antibody assays that confirm the presence of type 1 diabetes will be evaluated including: Diabetes Biochemical Autoantibody Assay (anti-GAD65, anti-ICA512, anti-insulin) and Islet Cell Autoantibody testing; genetic testing (deoxyribonucleic acid [DNA] and human leukocyte antigen [HLA]) will also be done to learn more about the T cell assays.

The following T Cell Assays will be conducted in individuals with type 1 diabetes, as well as those without type 1 diabetes:

  • Cellular Immunoblot Testing
  • T Cell Proliferation Assay
  • Tetramer Assay
  • Cytokine ELISpot Assay

Study Type

Observational

Enrollment (Anticipated)

100

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United Kingdom
      • Bristol, United Kingdom, BS10 5NB
        • University of Bristol
  • United States
    • California
      • Los Angeles, California, United States, 90027
        • Childrens Hospital of Los Angeles
      • San Francisco, California, United States, 94143-0136
        • University of California, San Francisco
      • Stanford, California, United States, 94305-5208
        • Stanford University Medical Center
    • Colorado
      • Denver, Colorado, United States, 80010
        • Barbara Davis Center for Childhood Diabetes
    • Florida
      • Gainesville, Florida, United States, 32608
        • University of Florida
      • Miami, Florida, United States, 33136
        • University of Miami School of Medicine
    • Indiana
      • Indianapolis, Indiana, United States, 46202
        • Riley Hospital for Children
    • Massachusetts
      • Boston, Massachusetts, United States, 02215
        • Joslin Diabetes Center
    • Minnesota
      • Minneapolis, Minnesota, United States, 55455
        • University of Minnesota
    • New York
      • New York, New York, United States, 10032
        • Naomi Berrie Diabetes Center, Columbia University
    • Pennsylvania
      • Pittsburgh, Pennsylvania, United States, 15213
        • Children's Hospital of Pittsburgh of UPMC
    • Texas
      • Dallas, Texas, United States, 75235
        • University of Texas Southwestern Medical Center at Dallas
    • Washington
      • Seattle, Washington, United States, 98101
        • Benaroya Research Institute at Virginia Mason

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

8 years to 35 years (Child, Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

To be eligible, individuals with type 1 diabetes must be:

  • Diagnosed with type 1 diabetes within one year of first study visit
  • 8-35 years of age at time of first visit
  • Weigh > 40 kg (88 lbs) at time of first visit
  • Individuals who will serve as control subjects who do not have type 1 diabetes cannot have a first degree or second degree relative with type 1 diabetes.

Exclusion Criteria:

Individuals must not:

  • Have any major illness
  • Be taking any steroid medications
  • If female, should not be pregnant or breastfeeding.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Investigators

  • Study Chair: Jay E Skyler, MD, Type 1 Diabetes TrialNet Study Chairman

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2005

Study Completion (Actual)

September 1, 2007

Study Registration Dates

First Submitted

September 13, 2005

First Submitted That Met QC Criteria

September 13, 2005

First Posted (Estimate)

September 21, 2005

Study Record Updates

Last Update Posted (Estimate)

May 13, 2016

Last Update Submitted That Met QC Criteria

May 12, 2016

Last Verified

May 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Tcell (IND) (completed)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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