Upon activation, MAIT cells undergo proliferation and expeditiously release cytokines implicated in OLP onset, including TNF-α, IFN-γ, IL-17A, IL-22, and other pro-inflammatory cytokines, chemokines, and cytotoxic molecules (e.g., perforin and granzyme B) [12–15]. Here, IFNG is linked to oral lichen planus.