Notably, SOD1 expression levels in the IR + SOD1 + β‐Thy group were in between those of the last two groups, indicating that the high SOD1 expression levels induced by irradiation in NSCLC cells could be significantly reduced by adding β‐Thy to the medium (Student’s t‐test, P  < 0.05, Figure 8a–d). This evidence concerns the gene SOD1 and non-small cell lung carcinoma.