hrp0086p1-p224 | Diabetes P1 | ESPE2016

Space-time Environmental Associations in Childhood Type 1 Diabetes (T1D). A Case-control Geographical Approach in the ISIS-Diab Cohort

Bougneres Pierre , Le Fur Sophie , Valtat Sophie , Valleron Alain-Jacques , ISIS-Diab Network Network

Background: T1D concordance in MZ twins being ~40%, non-heritable factors play a major causal role in this autoimmune disease. T1D has recently increased in young European children. Collecting prospective environmental data in a cohort of millions children-years starting soon after birth seems unpracticable. Retrospective case-control studies are an alternative, provided biased controls and recall bias can both be avoided.Objectives: To develop a ‘v...

hrp0086p1-p254 | Diabetes P1 | ESPE2016

A Case-Control Search of Environmental (E) Factors for Childhood Type 1 Diabetes (T1D) Using Lifeline Questionnaires in the ISIS-Diab Cohort

Balazard Felix , Le Fur Sophie , Biau Gerard , Valleron Alain-Jacques , Bougneres Pierre

Background: The rapidly increasing T1D incidence in European children suggests the recent emergence or extension of predisposing E factors, or the decrease of protective E factors acting during pregnancy, infancy or early childhood. E research has preferentially focused on specific candidate factors, such as hygiene hypothesis, enteroviruses, alimentation, in cohort or case-control studies. The risk of bias is a major concern in E studies.Objectives: To ...