Notably, MIP‐1α and MIP‐1β elevated by OLP T‐exos may in turn attract mononuclear cells and recruit CD8+ T lymphocytes via CCR1 and CCR5, indicating that OLP T‐exos might contribute to the development of OLP by increasing the infiltration of T lymphocytes in lesional sites. This evidence concerns the gene CD8A and oral lichen planus.