CSNK2A1 and neoplasm: In the multivariate analysis performed with the inclusion of age, tumor size, stage, T category, N category, M category, pSIRT6 expression, and CSNK2A1 expression, N category was an independent indicator of OS (p = 0.029), pSIRT6 expression was an independent indicator of OS (p = 0.011), and CSNK2A1 expression was an independent indicator of RFS (p = 0.003) (Table 4).