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, 87 (2), 121-31

A Combination of α-Fetoprotein and Des-γ-Carboxy Prothrombin Is Superior in Detection of Hepatocellular Carcinoma

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A Combination of α-Fetoprotein and Des-γ-Carboxy Prothrombin Is Superior in Detection of Hepatocellular Carcinoma

Judith M Ertle et al. Digestion.

Abstract

Background and aim: The incidence of hepatocellular carcinoma (HCC) is increasing in western countries. Despite its low sensitivity, the diagnosis of HCC still depends on detection of α-fetoprotein (AFP). Therefore, the aim of this study was to evaluate the combined analysis of AFP and des-γ-carboxy prothrombin (DCP) in a European cohort.

Methods: We performed a single-center study (164 HCC/422 controls), in which the serum concentrations of AFP and DCP were determined.

Results: AFP and DCP were elevated in HCC patients compared to controls (p < 0.0001). By combination of AFP and DCP, the sensitivity was improved from 28.7% for AFP (cutoff 400 ng/ml; AFP at cutoff 10 ng/ml: 54.9%) to 78.0% using cutoffs of 10 ng/ml for AFP and 5 ng/ml for DCP (DCP alone, cutoff 5 ng/ml: 63.4%). Among early-stage patients, the sensitivity increased from 20% for AFP (cutoff 400 ng/ml; AFP at cutoff 10 ng/ml: 38%) to 55% in combination (DCP alone, cutoff 5 ng/ml: 47%). The area under the curve (AUC) for AFP and DCP was similar (AFP: 0.88; DCP: 0.87; combined: 0.91). Among non-cirrhotic patients, DCP (AUC: 0.93) showed a better performance than AFP (AUC: 0.84). Especially patients with non-alcoholic steatohepatitis had a high percentage of DCP-positive tumors.

Conclusion: The data suggest that AFP alone is not sufficient for the serological diagnosis of HCC in European patients, while a combination of AFP and DCP can increase the sensitivity even in early-stage patients.

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