Moreover, the expression levels of pro-inflammation cytokines IL-17A (p < 0.0001; Figure 6B) and IFN-γ (p = 0.0019; Figure 6C) were significantly elevated in OLP lesions, and the same tendencies of the γδ T cells and STING-TBK1 pathway were present. Here, IL17A is linked to oral lichen planus.