Ten of these 19 genes, including ACAN, ASPN, C5orf13, HIF1A, IGFBP7, INHBA, LGALS1, PTN, SERPINH1, and TNFAIP6 (Table 5), demonstrated a statistically significant difference for the gene expression levels between keloid margin and internal control skin. Here, IGFBP7 is linked to keloid.