CTSC and cancer: They are mainly related to cell proliferation (such as CYTL1, TTK, CDC45, ASF1B, SGO1, CDC6, CENPW, KIAA0101, AREG, DTL, HJURP, and SAPCD2) [64,65,66,67,68,69,70,71,72,73,74], cancer cell infiltration (such as MEOX2, CTSC, and CSRP2) [75,76,77], production and maintenance of pluripotent stem cells (such as PROM1, FOXM1, CDCA5, CD74, MEST, FZD, and RAD54L) [78,79,80,81,82,83,84], and promotion of cancer (such as CLSTN3, DLG2, and E2F8) [84,85,86].