KDM5B and non-small cell lung carcinoma: To investigate the role of KDM5B and PTEN in the radioresistance of NSCLC, small interfering (si)-KDM5B-3 i.e., [the best silencing efficiency of the three small interfering RNAs (siRNAs) for silencing KDM5B] were selected for subsequent experiments (Figure 4A).