At doses that inhibit IκBα phosphorylation, DMAPT radiosensitized NSCLC cells, e.g., decreased clonogenic survival to a greater extent than that expected from additive lethality of the combination, i.e., the product of the percentages of surviving cells following each individual treatment (Supplementary Fig. S4). This evidence concerns the gene NFKBIA and non-small cell lung carcinoma.