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Noninvasive estimation of liver fibrosis in biopsy-proven hepatitis C virus-infected patients: angiogenic fibrogenic link.
European Journal of Gastroenterology & Hepatology 2017 Februrary
BACKGROUND/AIM: The assessment of liver fibrosis provides useful information not only for diagnosis but also for therapeutic decisions. This study aimed to develop and evaluate a predictive score named the angiogenic index (Angio-Index) for liver fibrosis staging and to compare Angio-Index by King, Gotebörg University Cirrhosis Index, Lok, FIB-4, and aspartate aminotranferase/alanine aminotranferase scores in hepatitis C virus-infected patients.
PATIENTS AND METHODS: Serum levels of angiopoietin-2, basic fibroblast growth factor, hepatocyte growth factor, and endostatin were assayed using an enzyme-linked immunosorbent assay in 122 HCV patients represented in two sets (estimation group and validation group). Stepwise linear discriminant analysis and area under receiver-operating characteristic curves (AUCs) were utilized to produce a predictive score comprising significant angiogenic biomarkers.
RESULTS: A novel score named the Angio-Index score was created on the basis of a combination of angiopoietin-2, basic fibroblast growth factor, hepatocyte growth factor, and endostatin. Angio-Index produces an AUC of 0.90 for significant fibrosis, 0.865 for advanced fibrosis, and 0.857 for cirrhosis. The Angio-Index score correctly classified 71% of the significant fibrosis (F2-F4) with a sensitivity of 93% and a specificity of 91%. The Angio-Index had a similar AUC in the validation study. The above six scores showed lower AUCs than Angio-Index.
CONCLUSION: Whereas liver biopsy is invasive, costly, and associated with complications, Angio-Index is simple, noninvasive, and more accurate; it may decrease the need for liver biopsy in Egyptian patients.
PATIENTS AND METHODS: Serum levels of angiopoietin-2, basic fibroblast growth factor, hepatocyte growth factor, and endostatin were assayed using an enzyme-linked immunosorbent assay in 122 HCV patients represented in two sets (estimation group and validation group). Stepwise linear discriminant analysis and area under receiver-operating characteristic curves (AUCs) were utilized to produce a predictive score comprising significant angiogenic biomarkers.
RESULTS: A novel score named the Angio-Index score was created on the basis of a combination of angiopoietin-2, basic fibroblast growth factor, hepatocyte growth factor, and endostatin. Angio-Index produces an AUC of 0.90 for significant fibrosis, 0.865 for advanced fibrosis, and 0.857 for cirrhosis. The Angio-Index score correctly classified 71% of the significant fibrosis (F2-F4) with a sensitivity of 93% and a specificity of 91%. The Angio-Index had a similar AUC in the validation study. The above six scores showed lower AUCs than Angio-Index.
CONCLUSION: Whereas liver biopsy is invasive, costly, and associated with complications, Angio-Index is simple, noninvasive, and more accurate; it may decrease the need for liver biopsy in Egyptian patients.
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