In the subgroup of lung adenocarcinoma, EphA4 and A5 expression showed trends of correlation with overall patients’ survival (Figure 3, log-rank test, p = 0.093 and p = 0.072, respectively), while EphA7 expression was significantly associated with overall patients’ survival in both univariate (Figure 3, log-rank test, p = 0.017) and multivariate analysis (Cox regression analysis, p = 0.005). Here, EPHA4 is linked to lung adenocarcinoma.