COMMD4 and non-small cell lung carcinoma: Clonogenic cell viability assays demonstrated that NSCLC cells depleted of COMMD4 showed hypersensitivity to irradiation and camptothecin, compared to the control siRNA transfected NSCLC cells, suggesting that COMMD4 was required for the survival of these NSCLC cells after irradiation or camptothecin treatment.