As shown in Figure 2A-C, consecutive tissue slides of the same set of specimens were used to evaluate the protein expression levels of MMP12 and hnRNP K. We further analyzed whether the expression level of MMP12 correlated with the subcellular localization (cytoplasmic or nuclear) of hnRNP K in NPC cells. This evidence concerns the gene HNRNPK and nasopharyngeal carcinoma.