Similar to in vitro results, it is in all NPC specimens that there was no significant difference in the expression levels of EBNA1, LMP2A, and LMP1 between 40 methylated (M) and 10 unmethylated (UM) NPC tissue samples (Figure 2B, 2D-2F). This evidence concerns the gene PDLIM7 and nasopharyngeal carcinoma.