CDK1 and colonic neoplasm: Adavo enhances the cytotoxic effects of 5-fluorouracil in p53-deficient human colon cancer cells, presumably by premature entry into mitosis via inhibition of Cdk1 Tyr15 phosphorylation, induction of histone H3 phosphorylation, abrogation of DNA damage checkpoints, and G2 block [46].