CDK6 and neoplasm: Moreover, univariate Cox regression analysis revealed that T stage (hazard ratio (HR) = 3.258, 95% confidence interval (CI) = 1.377–7.71, p = 0.007), tumor location (HR = 0.367, 95% CI = 0.148–0.906, p = 0.03), and a high CDK6 expression status (HR = 2.358, 95% CI = 1.132–4.91, p = 0.022) were prognosis‐related risk factors for OS in the CDK6 group (Table 2).