We analyzed single‐cell RNA sequencing data from a larger cohort, including 13 healthy and 8 periodontitis gingival samples, to further investigate the cellular sources and expression dynamics of FAP and OLN in gingival tissues.[24] The analysis identified 16 distinct cell clusters defined by specific cell markers (Figure S3C,D, Supporting Information), which were categorized into 12 major cell groups (Figure 2F). This evidence concerns the gene FAP and periodontitis.