Figure 7. Upregulated RFC4 and GMPS levels may be mediated by DNA copy number alterations in ESCC. (A) Genetic alteration analysis of RFC4 and GMPS by cBioPortal. (B, D) Putative copy number alterations of RFC4 and GMPS in esophageal cancer. (C, E) Putative copy number alteration analysis of RFC4 and GMPS based on different T, N, and M stages. (F, G) DNA copy number of RFC4 and GMPS in Hu Esophagus 2. *p < 0.05, **p < 0.01, ***p < 0.001.