Results of Kaplan–Meier method and log‐rank test showed that HIF‐1α, GLUT1, and CAIX expression was significantly associated with poor OS and DFS of NSCLC patients who received induction chemoradiotherapy (OS: HIF‐1α, P = 0.037; GLUT1, P = 0.005; CAIX, P < 0.001; DFS: HIF‐1α, P = 0.048; GLUT1, P = 0.005; CAIX, P = 0.025) (Fig. 4B). Here, CA9 is linked to non-small cell lung carcinoma.