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  • Title: Diagnosis of advanced fibrosis in HIV and hepatitis C virus-coinfected patients via a new noninvasive index: the HGM-3 index.
    Author: Resino S, Micheloud D, Miralles P, Bellón JM, Vargas A, Catalán P, Alvarez E, Cosín J, Lorente R, López JC, Muñoz-Fernández MA, Berenguer J.
    Journal: HIV Med; 2010 Jan; 11(1):64-73. PubMed ID: 19686437.
    Abstract:
    BACKGROUND: Noninvasive tests are increasingly being used for the assessment of liver fibrosis. We aimed to develop a serum index for the identification of advanced fibrosis (F>or=3) in HIV/hepatitis C virus (HCV)-coinfected patients. METHODS: We carried out a cross-sectional study on a group of 195 patients comprised of an estimation group (EG; n=127) and a validation group (VG; n=68) who all underwent liver biopsy and had not received previous interferon therapy. Liver fibrosis was estimated using the METAVIR score. We developed a new serum index (HGM-3) dependent on levels of platelets, alkaline phosphatase, hepatic growth factor, tissue inhibitor of metalloproteinase-1 and hyaluronic acid. RESULTS: In the EG, the area under the receiver operating characteristic curve (AUC-ROC) of HGM-3 for identification of F>or=3 was 0.939 [95% confidence interval (CI) 0.899, 0.979] which was significantly higher than the AUC-ROC of the HGM-2, FIB-4, aspartate aminotransferase to platelet ratio (APRI) and Forns' indexes. With HGM-3 <0.135 for F<3, 57 patients were correctly identified and two patients were misclassified. We found the presence of F<3 with 96.6% certainty. The negative likelihood ratio (LR) was <0.1 and the diagnostic odds ratio (DOR) was >40. With HGM-3 >0.570 in the EG for F>or=3, 31 patients were correctly identified, and five patients were misclassified. We found the presence of F>or=3 with 86.1% certainty. The positive LR was >12 and the DOR was >40. For the VG, the diagnostic accuracy values were similar to the values for the EG. CONCLUSIONS: HGM-3 appears to be an accurate noninvasive method for the diagnosis of bridging fibrosis and cirrhosis in HIV/HCV-coinfected patients.
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