For example, CK8/18 overexpression has been reported in hepatocellular carcinoma cells 26, while other studies have shown that high CK7 and CK9 expression correlates with tumor metastasis, and that these molecules could be used as biomarkers of the response to HCC treatment 28, 29, 30, 31. The gene discussed is KRT7; the disease is hepatocellular carcinoma.