Anti-MAGEA12 antibodies are used in the immunodetection of the protein MAGE family member A12. In humans, the canonical protein has a reported length of 314 amino acid residues and a mass of 34.8 kDa. It is reported to be expressed in many tumors of several types, such as melanoma, head and neck squamous cell carcinoma, lung carcinoma and breast carcinoma, but not in normal tissues except for testes. Among its functions, MAGEA12 is involved with the regulation of transcription. Synonyms for this target antigen include MAGE12, melanoma-associated antigen 12, MAGE12F antigen, cancer/testis antigen 1.12, cancer/testis antigen family 1, member 12, and CT1.12.