Zooming in at the genomic location of the EGFR gene, we found that both the EGFR-mutated samples and the EGFR wild type adenocarcinomas had an increased number of copy numbers at this position, but that the EGFR-mutant tumors had a significantly higher number of copies compared with the EGFR wild type tumors (p = 0.001) (Fig. 4). Here, EGFR is linked to adenocarcinoma.