DPP3 and esophageal squamous cell carcinoma: Assessment of DPP3 copy number alteration (CNA) in TCGA-ESCC data (Figure 2E) revealed that among a total of 94 ESCC patients, 8 patients (8.51%) exhibited shallow deletion, 49 patients (52.12%) did not exhibit CNA and labeled diploid, 32 patients (34.04%) exhibited copy number gain and 5 patients (5.31%) exhibited copy number amplification in the DPP3 gene.