National cohort study of people with type 1 diabetes in France

French National Cohort of People With Type 1 Diabètes: the SFDT1 Study

Observational Fondation Francophone pour la Recherche sur le Diabete · NCT04657783

This study looks at how changes in blood sugar levels and different insulin treatments affect heart health in people with type 1 diabetes over ten years.

Quick facts

Study typeObservational
Enrollment15000 (estimated)
Ages6 Years to 100 Years
SexAll
SponsorFondation Francophone pour la Recherche sur le Diabete Academic / other
Locations1 site (Paris)
Trial IDNCT04657783 on ClinicalTrials.gov

What this trial studies

This observational study aims to investigate the relationship between glycemic variability, insulin therapy modalities, and cardiovascular risk in individuals with type 1 diabetes. Participants will be followed for 10 years through clinical visits and online follow-ups, allowing researchers to gather data on cardiovascular events and other related health outcomes. The study will include a diverse range of recruiting sites, including university hospitals and private practices, to ensure a comprehensive understanding of the factors influencing cardiovascular mortality in this population.

Who should consider this trial

Good fit: Ideal candidates include adults and children aged 6 years and older with a diagnosis of type 1 diabetes who can provide informed consent and speak French.

Not a fit: Patients under guardianship or those unable to participate due to language barriers may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could identify new modifiable risk factors for cardiovascular diseases in patients with type 1 diabetes, potentially leading to improved management strategies.

How similar studies have performed: While there have been studies on cardiovascular risks in diabetes, this specific approach focusing on glycemic variability in a large cohort is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
1. Inclusion Criteria

   * Adults and children (age \>= 6 years)
   * Type 1 diabetes, defined as:
   * Age at diagnosis of diabetes \> 1 year and \<= 35 years
   * Insulin treatment initiated within the first 12 months following diabetes discovery
   * Affiliation to the French social security scheme (RIPH-2 constraint)
   * Ability to speak and read French
   * Ability to give written informed consent
2. Non-inclusion Criteria Patient under guardianship or protection for vulnerable people

Where this trial is running

Paris

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Diabetes Mellitus, Type 1Cardiovascular DiseasesHypoglycemiaPatient Participationtype 1 diabetescardiovascular diseaseglucose variabilityhypoglycemia
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.