TGFBR1 and lung cancer: Such an inverse correlation of miRNA expression and the EGFR signaling pathway was also found in miR-133a whose expression was negatively correlated with cell invasiveness in lung cancer cell lines, by targeting insulin-like growth factor 1 receptor (IGF-1R), TGF-beta receptor type-1 (TGFβR1), and EGFR [25].