MMP9 and urinary bladder neoplasm: These assays monitor proteins that include bladder tumor antigens, nuclear matrix protein 2, bladder tumor cell-associated mucin, carcinoembryonic antigen, BLCA-1 and BLCA-4 transcription factors, matrix metalloproteinase-9, carcinoembryonic antigen-related cell adhesion molecule, survivin, or telomerase [15,17].