CD8A and neoplasm: Therefore, in this study, we analysed the correlation between preoperative serum TC and TG and CD8+ T‐cell infiltration in tumour tissues in 90 patients who underwent pancreatic surgery; we found that TC and TG levels were negatively correlated with CD8+ T‐cell infiltration in tumour tissues and that the prognosis of patients with high TC and high TG levels was worse than that of those with low levels.