IFNG and oral lichen planus: As OLP is a condition characterised by a large T cell infiltrate localised in a band-like pattern directly beneath the basal epithelium, and because IFN-γ is instrumental in the immunopathogenesis of OLP [40], we hypothesized that an IFN-γ-induced local production of pro-inflammatory chemokines by oral keratinocytes could potentially represent an important mechanism involved in T cell recruitment.