Interleukin 17A, or, IL17A, is a human gene. Other names include: Interleukin-17A; IL-17; IL-17A; Cytotoxic T-lymphocyte-associated antigen 8; CTLA-8; cytotoxic T-lymphocyte-associated protein 8; CTLA8; IL17. The encoded protein has an amino acid length of 155 and a mass of 17.5 kDa. Other isoforms may exist. Interleukin 17A is a member of the IL-17 family. This gene shares homology with other species, including: Mouse, Rat.