TNFSF15 and systemic lupus erythematosus: 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).