Prodromaki et al. analysed the expression of DROSHA, DICER, and AGO2 genes (qRT-PCR method) as well as the expression of their protein products (Western blotting, immunofluorescence, and immunohistochemistry) in five human NSCLC cell lines and in tissue samples from 83 NSCLC patients. This evidence concerns the gene DICER1 and non-small cell lung carcinoma.