Anti-CT45A7 antibodies are used in the immunodetection of the protein cancer/testis antigen family 45 member A7. In humans, the canonical protein has a reported length of 189 amino acid residues and a mass of 21.2 kDa. It is notably expressed in the testis. It is a member of the CT45 protein family. Synonyms for this target antigen include Cancer/testis antigen 45-5, Cancer/testis antigen 45-6, Cancer/testis antigen 45A5, Cancer/testis antigen 45A6, and cancer/testis antigen family 45 member A7.