National Prospective Cohort Follow-Up for Children with Severe Autoimmune Cytopenia FRESH-PEF60196-en Yves PEREL National Prospective Cohort Follow-Up for Children with Severe Autoimmune Cytopenia BIOCEREVANCE 1 FRESH-PEF60196-en 60196 FRESH-PEF60196 Nathalie ALADJIDI Yves PEREL CENTRE HOSPITALIER UNIVERSITAIRE DE BORDEAUX Epidemiology France Portal (PEF) MINISTERE DU TRAVAIL, DE LA SANTE, DES SOLIDARITES ET DES FAMILLES null Nathalie;ALADJIDI Clinical progression prognostic factors autoimmune haemolytic anaemia Evans syndrome chronic immune thrombocytopenic purpura research network biobank physiopathological mechanisms of these diseases child Clinical immunology Hematology Paediatrics Immune thrombocytopenic purpura Autoimmune haemolytic anaemia, warm type Evans syndrome General objective: To prospectively study clinical and paraclinical evolution as well as prognostic factors for autoimmune haemolytic anaemia, Evans syndrome and chronic immune thrombocytopenic purpura among children in France - To generate support for a basic and therapeutic research network for these diseases Secondary objectives - To develop a biobank to study the physiopathological mechanisms of these diseases - To generate support for a national network for epidemiological, clinical, biological and therapeutic research for these diseases null France Individuals Patients population Male Female Infant, Newborn (birth to 28 days) Infant (28 days to 2 years) Child, Preschool (2 to 5 years) Child (6 to 12 years) Under 18 years of age and affiliated with a social security scheme - Living in mainland France Patients with AIHA, chronic ITP and/or ES, regardless of underlying factors Free informed written and signed consent by parental authority holders as well as the child or adolescent if they are of age constitutional haemolytic anaemia and constitutional platelet disease Clinical data Biological data Health event/morbidity Health event/mortality Other Through organizations (health services or institutions schools businesses etc.) < 500 individuals Converting or copying information into a structured record Observational Study Observational Study Cohort study 262 Unknown Restricted access To be decided if data may be used by academic teams To be decided if data may be used by industrial teams Access on specific project only