KIF21A and neoplasm: As shown in Figure 7, high KIF21A expression could notably lead to poor clinical prognosis outcome in three subgroups, such as patient age >60 years (P = .005, HR = 2.245, 95%CI = 1.258‐4.007), tumor histologic grade was G1/G2 (P = .014, HR = 2.124, 95%CI = 1.147‐3.933), and patient who did not underwent radiation therapy (P = .038, HR = 1.862, 95%CI = 1.026‐3.379).