Accordingly, we tested the frequencies of genotype A/A and genotype B/x between the HCC and non-HCC groups and in relation to KIR3DL1 + HLA-Bw4 positivity or negativity, although no significant associations were observed between genotype and KIR3DL1 + HLA-Bw4 status. This evidence concerns the gene KIR3DL1 and hepatocellular carcinoma.