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Scientists probe immune system flaws in type 1 diabetes

NCT ID NCT06427421

Knowledge-focused Sponsor: Assistance Publique - Hôpitaux de Paris Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at blood samples from 80 children (ages 2-17) recently diagnosed with type 1 diabetes and compares them to healthy children. Researchers want to understand how certain immune cells (called T cells) stop working properly, leading to the disease. The goal is to gather knowledge that could help develop new cell-based treatments to restore immune balance.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 80 people

The number the study aims to enrol. It can still change while the study runs.

Started

May 2025

Expected to finish

May 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

6 to 18 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: Newly diagnosed T1DM group: * Age ≥ 2 years and \< 18 years on day of inclusion; * Weight ≥ 12 kg; * Newly diagnosed T1DM, diagnosis defined according to International Society of Pediatric and Adolescent Diabetes (ISPAD) criteria by: hyperglycemia \> 2g/L and/or ketonemia and/or polyuro-polydipsia and/or weight loss ; * Absence of other associated inflammatory or autoimmune diseases; * Affiliation with a health insurance scheme or beneficiary (excluding AME); * Written consent of parental guardians; * Ability to understand and read French. Control group : * Age ≥ 2 years and \< 18 years on the day of inclusion; * Weight ≥ 12 kg; * No personal history of T1DM; * Affiliation with a health insurance scheme or entitled person (excluding AME); * Written consent from parental guardians; * Ability to understand and read French. Exclusion Criteria: Newly diagnosed T1DM group: * Use of oral or intravenous corticosteriods in the month prior to blood sampling * Contraindication to the use of anaesthetic cream for blood sampling. Control group : * History of autoimmune or inflammatory disease * Use of oral or intravenous corticosteriods in the month prior to blood sampling * Contraindication to the use of anaesthetic cream for blood sampling

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Conditions

The condition(s) this trial relates to.

type 1 diabetes mellitus

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Type 1 diabetes

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Hôpital Necker Enfants Malades

    RECRUITING

    Paris, 75015, France

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