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Clinical Chemistry 27: 1724-1728, 1981;
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Clinical Chemistry, Vol 27, 1724-1728, Copyright © 1981 by American Association for Clinical Chemistry

Increased inactive creatine kinase B protein in the plasma of patients with malignancy

MH Burnam, JL Barstis, CS Stern, DM Rose, MA Crouch, CM Haskell and BN Singh

Using a specific radioimmunoassay for enzymically inactive creatine kinase (EC 2.7.3.2) B protein (CK-Bi), we studied 139 patients with various malignancies. We found it to be increased in certain adenocarcinomas, including colorectal, lung, and prostate, as has also been reported for enzymically active CK-BB. Of 15 patients with leukemia or lymphomas with active disease, 12 also had increased values for CK-Bi in plasma. In these patients, concentrations of CK-Bi in plasma tended to correlate with disease activity, increasing with aggressive malignancy and decreasing on successful treatment. Thus, measurement of CK-Bi may constitute a sensitive means for detecting malignancy and, in certain subsets of patients, for monitoring therapeutic response.




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Copyright © 1981 by the American Association for Clinical Chemistry.