NCIt synonyms : CA 27-29; CA 27.29; CA27.29; Cancer Antigen 27-29; Cancer Antigen 27.29;
NCIt definition : An antigenic epitope that is a 20 amino acid sequence from the extracellular portion
of the transmembrane protein mucin-1 (MUC1). Overexpression of MUC1 induces the shedding
of its extracellular domain into the bloodstream. Increased MUC1 in the blood may
be a marker for breast cancer.;