The second group included 4 genes (CDC20, NUSAP1, CDKN2A, and CDKN3) the expression of which tended to increase from the control group to the CC group (CDC20, CDKN2A, and CDKN3) or the high-grade CIN group (NUSAP1). Here, CDC20 is linked to cervical squamous intraepithelial neoplasia.