Our studies showed that TNBC cell lines (MDA-MB-231, HS-578T, BT-549, MDA-MB-468 and HCC-1806) displayed more EMT and Cat L expression compared to luminal cell lines (MCF-7, T47-D, MDA-MB-361 and BT-474), which was associated with higher cell migration. This evidence concerns the gene CTSL and hepatocellular carcinoma.