HK2 and renal cell carcinoma: The human renal tubular epithelial cell line hexokinase-2 (HK-2) and three RCC lines (i.e., 786-O, SN12C, and OSRC-2) were used for western blotting, and the results showed that G9a expression in RCC cell lines was higher than that in HK-2 cells (Figure 1(e)).