To assess the correlation between CBX4 expression levels in GC tissues and clinicopathological characteristics, among the 114 GC patients in our study, 81 patients with CBX4 IHC scores of “++” and “+++” in GC tissues were categorized into the CBX4 high expression group, while 33 patients with CBX4 IHC scores of “−” and “+” were classified into the CBX4 low expression group. This evidence concerns the gene CBX4 and gastric cancer.