Chen's gastric dataset [29] revealed that CBX3 was overexpressed in gastric mixed adenocarcinoma (fold − change = 1.998 and P = 1.62E − 07) and gastric intestinal-type adenocarcinoma (fold − change = 1.878 and P = 1.13E − 16). Here, CBX3 is linked to gastric intestinal type adenocarcinoma.