Giacomini et al. [44] studied the IFN-γ induced (at 10, 100, and 100 U/mL) expression of B2m-associated HLA HCs (Face-1) and B2m-free HLA HCs (Face-2) on the cultured human melanoma cell line Colo 38, using mAbs NAMB-1 (B2m-specific), W6/32 (B2m-associated HLA binding), and mAb Q1/28 (which recognizes a monomorphic determinant expressed on the B2m-associated and B2m-free HCs). This evidence concerns the gene B2M and melanoma.