Background/Aims
Golgi protein-73 (GP73) is up-regulated in hepatocellular carcinoma (HCC). The aims
of this study were to determine if GP73 is detected in the serum, and to establish
the sensitivity and specificity of serum GP73 for diagnosing HCC.
Methods
Serum GP73 was detected by immunoblots and quantified by densitometric analysis.
Results
A total of 352 patients were studied. Serum GP73 levels were significantly higher
in patients with HCC compared to those with cirrhosis (P<0.001). GP73 had a sensitivity of 69% and a specificity of 75% at the optimal cutoff
point of 10 relative units, with an area under the receiver operating curve of 0.79
vs. 0.61 for AFP (P=0.001). GP73 levels had significantly higher sensitivity (62%) than AFP (25%) for
diagnosing early HCC (P<0.0001). Moreover, GP73 levels were elevated in the serum of 57% (32/56) of individuals
with HCC who had serum AFP levels less than 20 ng/ml.
Conclusions
Higher levels of GP73 can be found in the serum of patients with HCC than of those
without. GP73 was better than AFP for the diagnosis of early HCC. Further validation
studies are needed to confirm the role of GP73 in the early detection of HCC.
Keywords
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Article info
Publication history
Published online: June 28, 2005
Accepted:
May 8,
2005
Received in revised form:
April 19,
2005
Received:
March 8,
2005
Identification
Copyright
© 2005 European Association for the Study of the Liver. Published by Elsevier Inc. All rights reserved.