CASZ1 and hepatocellular carcinoma: Consistent with the above findings in HCC samples, our data showed that all examined HCC cell lines displayed lower mRNA and protein levels of CASZ1 than L02, especially for those (HCCLM3, HCC97-H, and Hep3B) with high invasion potential (Fig. 1f), which indicated a negative association between CASZ1 expression and HCC cell invasive ability.