TLR2 and rosacea: To date, the pathogenesis of rosacea remains largely unclear and is thougth to be associated with dysfunction in immune response, dysregulation of nervous and vascular system (Steinhoff et al., 2011; Moustafa et al., 2014).Toll-like receptor 2 (TLR2), as a component of innate immunity, is highly expressed in keratinocytes of rosacea patients (Yamasaki et al., 2011).