Anti-HPH2 antibodies enable researchers to detect and measure the HPH2 antigen in biological samples. This target is a reported synonym of the PHC2 gene, which encodes polyhomeotic homolog 2. This protein is known to function in spermatogenesis, among other biological roles. The human version of HPH2 has a canonical amino acid length of 858 residues and a protein mass of 90.7 kilodaltons, although 5 isoforms have been identified. It is reported to be localized in the nucleus of cells and widely expressed in many tissue types.