Next, we analysed CXCR4 expression between 38 EBV-positive (proven by in situ hybridization with EBER1) and 48 EBV-negative gastric carcinoma patients via immunohistochemistry (IHC), and the results were consistent with the expression found in the GSE51575 dataset (Figure 1B). This evidence concerns the gene CXCR4 and gastric carcinoma.