According to the median ratio of relative MEG3 expression (0.27) in tumor tissues, the 44 NSCLC patients were classified into two groups: High-MEG3 group (n = 21, MEG3 expression ratio ≥ mean ratio) and Low-MEG3 group (n = 21, MEG3 expression ratio ≤ mean ratio). This evidence concerns the gene MEG3 and non-small cell lung carcinoma.