In Cho's gastric dataset [28], CBX2 was overexpressed in diffuse gastric adenocarcinoma (fold − change = 2.29 and P = 6.01E − 09) and gastric mixed adenocarcinoma (fold − change = 2.077 and P = 3.75E − 04). Here, CBX2 is linked to diffuse gastric adenocarcinoma.