KIR3DL1 and hepatocellular carcinoma: Then, we tested the effects of Bw4-KIR ligand-receptor (or putative ligand-receptor) combinations, including Bw4-KIR3DL1, Bw4T-KIR3DL1, Bw4I-KIR3DL1, Bw4-KIR3DS1, Bw4T-KIR3DS1, and Bw4I-KIR3DS1, on the onset age of HCC by KM analysis individually.