Immun4Cure Cohort of Autoimmune Diseases

Inclusion Criteria Participants: Group 1: RA * Adults ≥18 years * Patient followed as part of their MAI in one of the departments participating in the study at UHM * Confirmed diagnosis according to international criteria :ACR/EULAR 2010 Group 2: LES * Adults ≥18 years * Patient followed as part of their MAI in one of the departments participating in the study at UHM * Confirmed diagnosis according to international criteria :ACR/EULAR 2019 Group 3: SSc * Adults ≥18 years * Patient followed as part of their MAI in one of the departments participating in the study at UHM * Confirmed diagnosis according to international criteria :ACR/EULAR 2013 Group 4: Healthy Controls * Adults ≥18 years * No symptoms of autoimmune disease * No first-degree family history of autoimmune disease Exclusion Criteria (all groupes): * Patients who have refused or are unable to give informed consent * Inability to follow the subject during the study period * Participation in another interventional study that includes an exclusion period that is still ongoing * Pregnant women * Not affiliated with a social security scheme * Patients without a national insurance number * Persons under judicial protection, guardianship or trusteeship * Persons deprived of their liberty