Recent studies have shown that cyclins and CDKs are overexpressed in many tumours, closely related to the diagnosis, progression and treatment of tumours.25, 26 CDK2 plays an important role in the DNA replication of high eukaryotes and the transformation from G1 to s‐phase.27 CDK2 overexpression can cross the G1/S limit, shorten the cell cycle and promote cell proliferation. Here, CDK2 is linked to neoplasm.