Furthermore, the survival time of NPC patients with negative VEGF expression was 52.0 ± 14.1 months, while the survival time of the patients with positive VEGF expression was 41.3 ± 20.7 months, suggesting that the survival time of NPC patients with negative VEGF expression was longer than that of NPC patients with positive VEGF expression, with the difference determined to be statistically significant (P < 0.01, Fig. 2c). The gene discussed is VEGFA; the disease is nasopharyngeal carcinoma.