CD4 and oral lichen planus: Jing Wang et al. demonstrated that lncRNA DQ786243 upregulates Foxp3+ Treg cells in oral lichen planus (OLP) and suppresses the secretion of IFN-γ and IL-17 by other CD4+ T cells such as Th1 and Th17 through Foxp3-miR-146a-NF-κB axis 56.