TNFAIP3 and rheumatoid arthritis: A20 has been reported as a disease susceptibility gene for human inflammatory and autoimmune pathology, including Rheumatoid Arthritis (RA) and Juvenile Idiopathic Arthritis, Systemic Lupus Erythematosus (SLE), Inflammatory Bowel Disease (IBD), celiac disease, psoriasis, type 1 diabetes, Sjogren's syndrome, coronary artery disease, rheumatic heart disease, and systemic sclerosis.