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  • Title: Value of tumor M2 (Tu M2-PK) in patients with renal carcinoma.
    Author: Oremek GM, Sapoutzis N, Kramer W, Bickeböller R, Jonas D.
    Journal: Anticancer Res; 2000; 20(6D):5095-8. PubMed ID: 11326675.
    Abstract:
    Pyruvate kinase is one of the glycolytic key enzymes. It exists in various isoforms which are expressed in different cell types. One of these isoforms, the type Tu M2-PK, is strongly overexpressed by tumor cells and released into body fluids. The concentration of Tu M2-PK in body fluids can be quantitatively determined by a commercially available enzyme-linked immunosorbent assay (ELISA)-kit. The Tu M2-PK concentration was measured in EDTA-plasma of 116 patients with renal carcinoma and 42 patients suffering from nephritis, by using this kit. The ranges of the Tu M2-PK-concentrations of the two groups did not overlap, indicating a highly significant discrimination of renal carcinoma and benign renal diseases. Furthermore, the Tu M2-PK concentration in EDTA-plasma correlated strongly with the Robson tumor stage of the 116 patients. The present results indicated that the Tu M2-PK might be the first tumor marker, which could be an excellent complementation of the diagnostic program for renal carcinoma.
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