DKK1 and hepatocellular carcinoma: Indeed, this was shown to be the case for patients suffering from triple-negative breast cancer subtypes, non-small cell lung cancer, esophageal squamous cell carcinoma, urothelial carcinoma and bladder cancer, gynaecological cancers or hepatocellular carcinoma (HCC) where high levels of DKK1 correlated with poor survival [51,52,53,54,55,56,57,58,59,60,61].