Mann-Whitney test was used to evaluate the association between the type of lichen planus (atrophic-erosive and reticular) and VCAM1 and ICAM1 expression; however, no significant difference has been found between the expression of these markers and the type of lichen planus (p=0.672 for VCAM1 and p=0.949 for ICAM1). The gene discussed is ICAM1; the disease is lichen planus.