However, the expression of CD161 in Head and Neck squamous cell carcinoma (HNSC), Lung adenocarcinoma (LUAD), Uterine Carcinosarcoma (UCS), Lung squamous cell carcinoma (LUSC), Bladder Urothelial Carcinoma (BLCA) was lower than normal tissues. This evidence concerns the gene KLRB1 and head and neck squamous cell carcinoma.