CHD5 and hepatocellular carcinoma: A case-control study was conducted and the results indicated potential associations between the risk of HCC and the CHD5 polymorphisms rs9434741 (PAR = 0.0051), rs2273032 (PAR = 0.0089) and rs12067480 (PAR = 0.0261) in the Han population (Fig. 1b and Additional file 1: Table S1).