CXCR1 and keloid: Considering potential involvement of mechanical tension in the keloid, we analyzed the expression of some known mechanoreceptor-encoding genes, including CXCR1, CXCR2, TGFBR1, TGFBR2, ITGA2, ITGB1, LRP5, FZD4, FZD7, RFTN1, and TNFR1.