IL17A and autoimmune disease: One study showed that γδT cells are one of the main sources of IL-17 in the serum of patients with acute gouty arthritis (AGA) (Liu et al., 2018), while IL-17 is an effective pro-inflammatory cytokine, and its elevated levels are associated with the progression of autoimmune diseases and cancer (Iwakura et al., 2011), showing that γδT cells may be involved in the pathogenesis of inflammatory responses in AGA patients.