IL-17A commonly referred to as IL-17, is the prototypical IL-17 family member and plays an essential role in host defense against microbial infections and is widely implicated in various inflammatory conditions i.e., psoriasis, asthma, rheumatoid arthritis, multiple sclerosis, transplant rejection, inflammatory bowel disease, and cancer (14, 15). The gene discussed is IL17A; the disease is inflammatory bowel disease.