HAVCR2 and head and neck squamous cell carcinoma: An elevated TIM3 expression was consistently found in inflammatory cells of the cancerous tissue (Fig. 1A), and quantification analysis showed the significant up‐regulation of TIM3 in HNSCC (n = 122) as compared with dysplasia (n = 43) and normal mucosa (n = 27) (P < 0.05, Fig. 1B).