An increased expression of IGF1 (fold regulation = 2.74; fold change = 2.74) and a decreased expression of ATG9B (fold regulation = −2.25; fold change = 0.44), HGS (fold regulation = −2.43; fold change = 0.41), ESR1 (fold regulation = −2.04; fold change = 0.49), and SNCA (fold regulation = −2.31; fold change = 0.43) was found in the peripheral blood T cells of OLP patients. Here, ATG9B is linked to oral lichen planus.