The results from analyzing both the univariate and multivariate analysis subgroups indicated that decreased expression of PTEN was associated with poor OS in NSCLC patients (HR = 0.47, 95% CI: 0.37–0.59, P < 0.001; HR = 0.47, 95% CI: 0.39–0.56, P < 0.001, respectively) (Figure S2, Table 2). Here, PTEN is linked to non-small cell lung carcinoma.