Th17 cells and IL17 contribute to inflammatory pathways in many rheumatologic and autoimmune diseases, such as rheumatoid arthritis, systemic sclerosis, systemic lupus erythematosus, Sjögren syndrome, psoriasis, familial mediterranean fever, multiple sclerosis, and ulcerative colitis [4]. This evidence concerns the gene IL17A and systemic lupus erythematosus.