Similar to A2780CP20, transient transfection of ILK-siRNA(2) into OVCAR3CIS cells—a HGSOC cell line resistant to CIS—reduced ILK protein levels (45.0% reduction; ** p < 0.01, Figure 3A,B), colony formation (62.5% reduction; * p < 0.05, Figure 3C), and cell invasion (35.3% reduction; ** p < 0.01, Figure 3D) compared with C-siRNA-transfected cells. This evidence concerns the gene ILK and in situ carcinoma.