The association of the number of CD8+ Foxp3+ TIL, Foxp3+ Granzyme B+ TIL and the ratio of CD8+ Foxp3+ to CD8+ and GranzymeB+ Foxp3+ to Foxp3 TIL and clinicopathological characteristics in NPC patients. The gene discussed is CD8A; the disease is nasopharyngeal carcinoma.