LOX and Barrett esophagus: We employed the MEXPRESS database further to verify the correlation between clinicopathological parameters and LOX expression, results showing that LOX expression is related to Barrett's esophagus, histological type, the number of lymph nodes positive, pathological T stage, reflux history, race, tumor stage, BMI, sample type, and OS (Figure 3(a)), which is consistent with the analysis results in Figure 2.