Neurodevelopmental disorders such as attention deficit disorder with or without hyperactivity, autism spectrum disorder, language and social communication disorder, motor coordination disorder, learning disorder (dyslexia, dyscalculia, dysorthography), intellectual development disorder are frequent and long-lasting developmental difficulties that can be observed in children in various domains. They are often associated and have a significant impact on daily functioning at school and at home. The rate of people affected by neurodevelopmental disorders including autism spectrum disorder have increased significantly over the past 20 years. Improved screening only partly explains this evolution. A genetic predisposition plays an important role in the occurrence of these disorders, however, current scientific data suggest a multifactorial origin. Exposures such as those related to the use of pesticides, air pollution or the presence of endocrine disruptors in our diet could be involved in the genesis of neurodevelopmental disorders, particularly during intrauterine life, a period of great vulnerability. The current diagnostic pathways for autism rarely enable the early identification of babies at risk. Without early detection and timely targeted intervention, these children have a poor health outcome and do not reach their full potential. The general objective of the MARIANNE cohort is to constitute a French research infrastructure dedicated to research on the biological and environmental determinants of neurodevelopmental disorders including autism. This cohort is based on the follow-up of 1200 families with already a child affected by an autism spectrum disorder, which implies a high risk of neurodevelopmental disorders including autism spectrum disorder for the siblings, and of 500 families from the general population with no excess risk of neurodevelopmental disorders. The total number of subjects to be included (mother, father, unborn child and ASD sibling for the HR group) is thus 6300. The inclusion of these families will be at the beginning of a new pregnancy and the follow-up will be carried out from the second trimester of pregnancy until the children are 6 years old, the age at which the diagnosis of neurodevelopmental disorders is possible. Biological, clinical, social and environmental data will be collected at different stages of the follow-up and will be included into a large database.
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Autism Spectrum Disorder diagnosis
Timeframe: between 60 and 66 months
Autism Spectrum Disorder diagnosis
Timeframe: between 24 and 30 months
Developmental Intelligence Disorder diagnosis
Timeframe: at 72 months
Developmental Coordination Disorder diagnosis
Timeframe: at 72 months
Attention Deficit Hyperactivity Disorder diagnosis
Timeframe: at 72 months
Diagnosis of Language and Learning Disorder
Timeframe: at 72 months
Socioeconomic and lifestyle risk factors for neurodevelopmental disorders including autism spectrum disorder
Timeframe: at inclusion
Maternal diet and medication use during pregnancy
Timeframe: at inclusion
Environmental exposition
Timeframe: at inclusion