HLA-DQA2 and non-small cell lung carcinoma: To analyze the ability of cytotoxic anticancer drugs to influence the MHC class I antigen and NKG2D ligand expression, the 5 NSCLC cell lines were left untreated (NT) or treated with 1 or 10 nM of Gemcitabine, Pemetrexed, Docetaxel, or Vinorelbine, respectively, for 24 hours before the expression of each molecule was assessed.