We confirmed that in NPM-ALK-harbouring Karpas-299 cells (ALCL) and EML4-ALK-harbouring H3122 cells (NSCLC) ETV5 is downregulated upon treatment with the ALK inhibitors, TAE-684 and crizotinib (Fig. 1d). This evidence concerns the gene EML4 and non-small cell lung carcinoma.