Anti-SPANX family member N2 antibodies are used for the immunodetection of the protein encoded by the SPANXN2 gene. In humans, the canonical protein has a reported length of 180 amino acid residues and a mass of 19.9 kDa. It is a member of the SPAN-X protein family. Other names for this target antigen include cancer/testis antigen family 11, member 7, nuclear-associated protein SPAN-Xn2, and sperm protein associated with the nucleus on the X chromosome N2.