Other factors are also involved in vasculogenesis in the RA synovium, such as angiopoietin (Ang)1 and its tyrosine kinase receptor Tie214,17 monocyte chemoattractant protein (MCP)-1, IL-8, IL-17, and interferon-inducible protein (IP) 10. The gene discussed is IL17A; the disease is rheumatoid arthritis.