- The novel serine protease tumor-associated differentially expressed gene-15 (matriptase/MT-SP1) is highly overexpressed in cervical carcinoma. Santin, A.D., Cane', S., Bellone, S., Bignotti, E., Palmieri, M., De Las Casas, L.E., Anfossi, S., Roman, J.J., O'Brien, T., Pecorelli, S. Cancer (2003)