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