Using an Agilent microarray, Bjaanaes et al. examined the expression of miRNAs in 154 surgically resected lung adenocarcinomas and 20 corresponding normal lung tissue samples; they found that 129 miRNAs were strikingly differentially expressed in lung adenocarcinomas in comparison with normal lung tissues, among which 17 miRNAs were differentially expressed between tumors with EGFR-mutation and wild-type [22]. Here, EGFR is linked to lung adenocarcinoma.