ST6GAL1 and hepatocellular carcinoma: Hepatocellular carcinogenesis is a complicated process resulting from multiple molecular events leading to the initiation, promotion and progression of tumors.30, 31 Zhao et al.32 reported that sialylation might modulate the invasion and chemosensitivity of HCC, likely through ST6Gal-I or ST8SIA-II regulation of PI3K/Akt signaling.