Oncomine database (https://www.oncomine.org/) analysis showed that seven epigenetic regulatory genes, UHRF1, EZH2, TTF2, SUV39H2, PCNA, WHSC1, and RAD54L, were over-expressed in NSCLC tissues compared to the normal lung tissues in multiple NSCLC patient datasets (Figure 1 and Table 1). This evidence concerns the gene PCNA and non-small cell lung carcinoma.