The role of MAP4K4, SPTBN1, PCDH7, KLK7, KLK8, KLK10 and SAM68, which were identified to be differentially expressed among metastatic compared to non-metastatic CC in our bioinformatic analysis and their effect on the metastatic progression of various other type of cancer is summarized in Table 2. This evidence concerns the gene KLK7 and cancer.