AT rich interactive domain 4B (RBP1- like) isoform 1, RBP1-like protein, breast carcinoma-associated antigen BCAA, breast cancer-associated antigen BRCAA1, Rb-binding protein homolog, retinoblastoma-binding protein 1-like 1, SIN3A-associated protein 180, retinoblastoma binding protein 1-like 1, ARID4B
The novel BRCAA1 proteins epitope was mapped to the cytoplasm of MCF-7 cells. Immunohistochemistry analysis showed that the antigen epitope exhibited positive expression in 65% of breast cancer specimens. Its expression is associated with characteristics that are associated with prognosis of breast cancer, and its sera antibody level may be helpful for breast cancer diagnosis.