Connective tissue diseases (CTD) or systemic autoimmune diseases (SADs) as they are known
today are a group of chronic inflammatory conditions with autoimmune aetiology with few
treatment options and difficult diagnosis.Brest team contribute to perform a new
classification of the following systemic autoimmune diseases in a European Union's Seventh
Framework Programme. The aim of this research is to constitute a Healthy Volunteers cohort to
compare with systemic autoimmune diseases cohort into molecular clusters instead of clinical
entities through the determination of molecular profiles using several "Omics" techniques.