Our fibroblasts in NEOLP and EOLP shared transcriptional similarity with fibroblasts from skins of scleroderma patients (including CCL19+APOE+CXCL12+ fibroblasts and SFRP2+PRSS23+ fibroblasts), which indicated an overlap between inflammatory features of fibroblasts across OLP and other diseases. Here, CCL19 is linked to oral lichen planus.