Correlation between ZNF750 mRNA expression levels and epithelial differentiation genes in ESCC. (A) Gene set enrichment analysis of interrelated ZNF750 expression and epithelial differentiation module using reference gene sets in the ESCC dataset. (B) Correlation between ZNF750 and SPRR1A expression in the CCLE dataset. (C) Correlation between ZNF750 and SPRR1A expression in the Kyushu dataset. ESCC, esophageal squamous cell carcinoma; GAPDH, glyceraldehyde-3-phosphate dehydrogenase; SPRR1A, small proline rich protein 1A; ZNF750, zinc finger protein 750; CCLE, Cancer Cell Line Encyclopedia.