Figure 1. Frame diagram of this study. The first image is selected to represent information of tissue datasets from the Gene Expression Omnibus database. Abbreviations: DEG: differentially expressed gene; GO: gene ontology; KEGG: Kyoto Encyclopedia of Genes and Genomes; PPI: protein-protein interaction; CDC20: cell-division cycle protein 20; MELK: maternal embryonic leucine zipper kinase; TYMS: thymidylate synthase; EZH2: enhancer of zeste homolog 2; FOXM1: forkhead box protein M1.