IL-17A is a member of the IL-17 family, which is comprised of 6 members [IL-17A, IL-17B, IL-17C, IL-17D, IL-17E (also called IL-25), and IL-17F]. IL-17 family members are involved in numerous immune regulatory functions, including inducing and mediating proinflammatory responses and allergic responses. IL-17 induces the production of many other cytokines (IL-6, G-CSF, GM-CSF, IL-1beta, TGF-beta, and TNF-alpha), chemokines, including IL-8 (CXCL8), GRO-alpha (CXCL1) and MCP-1 (CCL2) and prostaglandins from many cell types (fibroblasts, endothelial cells, epithelial cells, keratinocytes and macrophages).

Alternate Names - IL17A, CTLA8, IL-17, IL-17A, IL17, CTLA-8, interleukin 17A

Homology Across Species
Canis lupus familiaris (dog) IL-17A – 100%
Canis lupus dingo (dingo) IL-17A – 100%
Vulpes vulpes (red fox) IL-17A – 99%
Ailuropoda melanoleuca (giant panda) IL-17A – 96%
Ursus maritimus (polar bear) IL-17A – 96%
Leptonychotes weddellii (Weddell seal) IL-17A – 96%
Odobenus rosmarus divergens (Pacific walrus) IL-17A – 95%
More - https://blast.ncbi.nlm.nih.gov/