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The Role of the Thymus in Type I Diabetes. (TregDiab)

T

Toulouse University Hospital

Status

Withdrawn

Conditions

Type1 Diabetes

Treatments

Procedure: Blood collection

Study type

Interventional

Funder types

Other

Identifiers

NCT03236558
RC31/16/8254

Details and patient eligibility

About

Regulatory T lymphocytes play a major role in the protection from autoimmune pathology. Defects in immunosuppression mediated by these cells is therefore suspected to contribute to these diseases. This issue has very little been studied in humans.Regulatory T cells emigrated from the thymus will be isolated from the blood of patients and healthy controls. The repertoire of antigen-receptors will be analysed by high throughput sequencing and its diversity estimated using appropriate statistical models borrowed from ecology.

Full description

In the thymus of an animal model of type I diabetes, the population of regulatory T cells expresses a repertoire of antigen receptors that is approximately ten-fold less diverse than that found in mice resistant to autoimmune pathology. Genetic models later showed that this reduced diversity was involved in the susceptibility to diabetes. Researchers study the diversity of the TCR expressed by regulatory T cells from paediatric type I diabetes patients and controls. Regulatory T cells emigrated from the thymus will be isolated from the blood of patients and healthy controls. The repertoire of antigen-receptors will be analysed by high throughput sequencing and its diversity estimated using appropriate statistical models borrowed from ecology.

Sex

All

Ages

6 to 12 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • type I diabetes patient
  • having at least one age-matched sibling (healthy control)

Exclusion criteria

  • other immunopathology
  • treatment with any anti-inflammatory or immunosuppressive drugs
  • puberty
  • legal protection

Trial design

Primary purpose

Basic Science

Allocation

N/A

Interventional model

Single Group Assignment

Masking

None (Open label)

0 participants in 1 patient group

Patients with diabetes
Experimental group
Description:
T1D patients with blood collection
Treatment:
Procedure: Blood collection

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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