CDK1 and cancer: In this study, a pan-cancer analysis of CDK1 was performed using the TCGA project and the GEO database to explore the potential molecular mechanisms of the action of CDK1 in tumorigenesis and clinical prognosis in terms of gene expression, survival status, genetic alterations, protein phosphorylation, methylation levels, immune infiltration, pan-cancer correlation with three classes of RNA methylation regulatory proteins and related cellular pathways, and to lay the foundation for future research on CDK1-based antitumor therapy.