We subsequently conducted immunohistochemical analysis of SUV39H2 in lung cancer and normal tissues, and found that SUV39H2 was overexpressed in 217 out of 328 archival NSCLC cases in accordance with the Oncomine database, while no staining was observed in normal organs, except for the testis (Fig. 1d,e). Here, SUV39H2 is linked to non-small cell lung carcinoma.