To determine of EZH2 expression level in NSCLC tumor tissues compared with that in paracancerous lung tissues, LUAD tissues from 513 patients (including 59 paired tumor and paracancerous lung tissues) and LUSC tissues from 502 patients (including 49 paired tumor and paracancerous lung tissues) were collected from the TCGA database. Here, EZH2 is linked to non-small cell lung carcinoma.