Genome-wide association studies have revealed the link of TL1A gene (Tnfsf15) variants with various autoimmune and inflammatory diseases, including psoriasis (23, 24), IBD (55–58), Graves’ disease (59), uveitis (60), Behcet’s disease (61), and systemic lupus erythematosus (62). The gene discussed is TNFSF15; the disease is Behcet disease.