STAT3 and nasopharyngeal carcinoma: The survival time of NPC patients with negative STAT3 expression was 53.6 ± 13.1 months, while the survival time of the patients with positive STAT3 expression was 39.5 ± 20.8 months, demonstrating that the survival time of NPC patients with negatively expressed STAT3 was longer than that of NPC patients with positive expressions of STAT3, a difference of which was determined to be statistically significant (P < 0.05, Fig. 2b).