PTP4A2 and hepatocellular carcinoma: The qRT-PCR analysis demonstrated that in comparison to the human hepatic astrocyte cells LX-2, the relative mRNA expression levels of GZMH was remarkably lower, yet FTL, PTP4A2, UBE2F, CDKN2D, RGS2, and AHSA1 were notably higher in HCC cells Huh7 (Fig. 7A).