SELENBP1 and non-small cell lung carcinoma: To assess whether overexpression of SELENBP1 also mediate apoptosis of NSCLC cells under high level of oxidative stress, A549‐SELENBP1, H1299‐SELENBP1, and their control cells were treated with hydrogen peroxide treatment (200 μM) for 24 h, and then, FCM analysis performed that the rate of apoptotic cells was increased in both of A549‐SELENBP1 and H1299‐SELENBP1 group compared with their control groups (Figure S3A).