NREP and keloid: A statistically significant (P < .05) differential expression and a fold change of more than 2 were determined between keloid margin and internal control biopsy samples for 10 genes, including ACAN, ASPN, C5orf13, HIF1A, IGFBP7, INHBA, LGALS1, PTN, SERPINH1, and TNFAIP6 (Table 5).