TMEM119 and skin basal cell carcinoma: To identify BCC-specific regulons that may be driving condition-specific gene expression changes in the different FIB populations, including TMEM119+ FIBs, we performed GRN analysis with pySCENIC and identified significantly active regulons that were specific to each FIB/FIB-like cluster in BCCs but not in PTS (Fig. 3N).