Comparison of liver stiffness, fibrotest and liver biopsy for assessment of liver fibrosis in kidney-transplant patients with chronic viral hepatitis

Laurent Alric, Nassim Kamar, Delphine Bonnet, Marie Danjoux, Florence Abravanel, Valérie Lauwers-Cances, Lionel Rostaing
Transplant International 2009, 22 (5): 568-73
To assess the accuracy of the noninvasive tools, fibrotest (FT) and liver stiffness measurement (LSM) for assessing liver fibrosis in kidney-transplant patients with chronic hepatitis virus B (HBV) or C (HCV) infection. Thirty-eight consecutive kidney-transplant patients with HCV (n = 26) or HBV (n = 12) underwent liver biopsies followed by a FT and LSM. Liver biopsies gave the following fibrosis-grade distribution using METAVIR scores: F0/F1, n = 10 (26.9%); F2, n = 14 (36.8%), F3, n = 7 (18.42%); F4, n = 7 (18.4%). The area under the receiver-operating characteristic curve for mild fibrosis stage <F2 was 0.69 (0.47-0.91) for the FT and 0.68 (0.45-0.90) for LSM; for severe fibrosis stage F3-F4, they were 0.55 (0.35-0.76) for the FT and 0.69 (0.50-0.87) for LSM. Eighty to 90% of patients with no significant liver fibrosis (<F2) were well-classified, with a cut-off value <0.5 for the FT and <7.1 kPa for LSM. Diagnosis of patients with severe liver fibrosis (F3/F4) by FT and LSM differed by 38.4% from the liver biopsy data. The FT and LSM are acceptably accurate for diagnosing mild liver fibrosis in kidney-transplant patients with chronic HCV or HBV infections, but their diagnostic value for predicting severe liver disease needs to be confirmed.

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