Background: The prognosis and clinical management of patients with chronic liver diseases are closely related to the severity of liver fibrosis. Liver biopsy is considered the gold standard for the staging of liver fibrosis. However, it is an invasive test sometimes related to complications. This study aimed to assess the diagnostic value of enhanced liver fibrosis (ELF) test to predict liver fibrosis in patients with chronic hepatitis C.
Methods: This study included 162 patients with liver disease and 67 healthy controls. Hyaluronic acid, tissue inhibitor of matrix metalloproteinase type 1, and amino-terminal propeptide type III procollagen were measured by enzyme-linked immunosorbent assay with the ELF test ADVIA Centaur® (Siemens Healthcare Diagnostics Inc.). Fibrosis stage was determined using the Metavir scoring system.
Results: In our study, for the diagnosis of significant fibrosis (Metavir F≥2) a cut-off value >7.72 provides a sensitivity of 93.0% and a specificity of 83.0%. The areas under the receiver operator characteristic curve, sensitivity, specificity, and positive and negative predictive values were 0.94, 93.3%, 81.0%, 93.3%, and 81.0%, respectively (P<0.001). For the diagnosis of cirrhosis (Metavir F=4) a cut-off value >9.3 provides a sensitivity of 93.0% and a specificity of 86.0%. The areas under the receiver operator characteristic curve, sensitivity, specificity, and positive and negative predictive values were 0.94, 79.1%, 90.8%, 75.6%, and 92.3%, respectively (P<0.001).
Conclusions: The ELF test is a promising non-invasive method for assessing liver fibrosis in patients with chronic hepatitis C. It is effective in the diagnosis of both fibrosis and cirrhosis.
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