However, the protein levels of retinoblastoma (RB) protein, a known direct target of miR-675 in colorectal cancer and another target prediction of miR-675-5p, IkB kinase TBK1 protein, was also reported to be necessary in mediating KRAS-driven tumorigenicity in lung cancer remained unchanged in A549 cells and HTB-182 cells transfected with LV-miR-675-5p-precursor (Additional file 2: Figure S1 and Additional file 3: Figure S2) [18,19,27]. Here, KRAS is linked to lung cancer.