Anti-B melanoma antigen family member 4 antibodies enable researchers to detect and measure the B melanoma antigen family member 4 antigen in biological samples. This target is a reported synonym of the BAGE4 gene, which encodes BAGE family member 4. The human version of B melanoma antigen family member 4 has a canonical amino acid length of 39 residues and a protein mass of 4.2 kilodaltons. It is reported to be a secreted protein. B melanoma antigen family member 4 is a member of the BAGE protein family.