IL17RA (Interleukin 17 Receptor A): IL17RA is a part of the receptor complex for interleukin 17 (IL-17), a cytokine that plays a key role in regulating inflammatory and immune responses. IL17RA signaling is essential for defense against extracellular pathogens and is involved in the development of several autoimmune and inflammatory diseases, including psoriasis, rheumatoid arthritis, and ankylosing spondylitis. Targeting IL17RA and the IL-17 pathway is an important focus of ongoing therapeutic research for these conditions.