Medical Follow-up of New Cases of Polyarthritis in Children and Young Adults

Population: Juvenile idiopathic arthritis (JIA), rheumatoid arthritis (RA) and seronegative / psoriatic / undifferentiated arthritis (UA), systemic lupus erythematosus (SLE) or diffuse systemic sclerosis dSS). Naïve to basic treatment OR treated for ≤ 3 months; except for patients with JIA. These 5 cohorts will be subject to standardized clinical monitoring.

NCT Number	NCT07000916
Lead Sponsor	Université Catholique de Louvain
Conditions	Juvenile Idiopathic Arthritis, Rheumatoid Arthritis, Psoriatic Arthritis, Systemic Lupus Erythematosus, Diffuse Systemic Sclerosis, Seronegative Arthritis
Enrollment	1,000 participants
Start Date	2013-09-11
Primary Completion	2028-03-31 (estimated)
Study Completion	2028-03-31 (estimated)
Updated on ClinicalTrials.gov	2025-06-03