KIR3DL1 and melanoma: found that the allogeneic connection of NK cell receptor KIR3DL1 (also known as killer cell immunoglobulin-like receptor, with three Ig domains and a long cytoplasmic tail 1) to HLA-Bw4 inhibited the cytotoxicity of both HLA-B*4403-transfected melanoma and endogenous HLA-Bw4-expressing melanoma.