As shown in Table 1, the expression level of CCNF in male patients with HNSC (P=0.0010) and LUAD (P=0.0329) was significantly higher than that in female patients, but CCNF expression in male patients with KIRP (P=0.0161) and SARC (P=0.0064) was significantly lower than that in female patients with these cancers. This evidence concerns the gene CCNF and cancer.