To clarify the different irradiation sensitivities of the three NSCLC cells and to examine the relationship between irradiation sensitivity and their Nrf2 protein levels, we performed colony formation assays, 3-(4,5-Dimethylthiazol-2-Yl)-2,5-Diphenyltetrazolium Bromide (MTT) assays, and western blotting. Here, NFE2L2 is linked to non-small cell lung carcinoma.