To validate the findings from the analysis of microarray‐based datasets, we measured the expression of EXT mRNA and protein in five NSCLC cell lines (A549, PC9, NCI‐H1299, NCI‐H460, and NCI‐H23) and human bronchial epithelioid (HBE) cells by qRT‐PCR and western blot, respectively. Here, EXT1 is linked to non-small cell lung carcinoma.