Journal
ANNALS OF ONCOLOGY
Volume 19, Issue 2, Pages 353-358Publisher
OXFORD UNIV PRESS
DOI: 10.1093/annonc/mdm448
Keywords
A(1)FP; cirrhosis; HCC; IL-6; tumor markers
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Background: A large amount of evidence suggests a possible role of interleukin-6 (IL-6) in the pathogenesis of hepatocellular carcinoma (HCC). Patients and methods: We studied both IL-6 and A, FP in patients with HCC, non-neoplastic liver disease or in healthy controls. Results: IL-6 titers were four-fold higher in cancer than in cirrhotic patients and 25-fold higher than in healthy controls. As for alphal-fetoprotein (A(1)FP) titers, the highest levels were observed in cancer patients. Receiver operating characteristic (ROC) curves analysis demonstrated that IL-6 is significantly more discriminant than A(1)FP, with 'optimal' cut-off values of 7.9 pg/ml (sensitivity = 0.83, specificity = 0.83, efficiency = 0.83). The ROC curves used to distinguish HCC from cirrhotic patients only, showed higher discriminant power of IL-6 versus A(1)FP titers, with a new cut-off value of 12 pg/ml (sensitivity=0.73, specificity=0.87, efficiency=0.8). Discriminant analysis on HCC and non-HCC subjects yielded sensitivity, specificity and efficiency rates of 77%, 93% and 88%, respectively. The overall efficiency of the two tests combined was 82%. Conclusions: IL-6 could be considered a promising tumor marker for HCC. In particular, the diagnostic value of the test is significantly increased when combined with A(1)FP.
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