CTLA4 and hepatocellular carcinoma: Yang et al. (105) investigated association between CTLA-4c.49A>G, CTLA-4CT60G>A, CTLA-4c.-1722T>C, CTLA-4 rs16840252C>T, and HCC risk in a group of 584 patients and 923 control subjects of an Eastern Chinese Han population.