title: Meta-analyses of FibroTest diagnostic value in chronic liver disease.
abstract: BACKGROUND
  FibroTest (FT) is a biomarker of liver fibrosis initially validated in patients with chronic hepatitis C (CHC). The aim was to test two hypotheses, one, that the FT diagnostic value was similar in the three other frequent fibrotic diseases: chronic hepatitis B (CHB), alcoholic liver disease (ALD) and non-alcoholic fatty liver disease (NAFLD); and the other, that the FT diagnostic value was similar for intermediate and extreme fibrosis stages.
  
  
  METHODS
  The main end points were the FT area under the ROC curves (AUROCs) for the diagnosis of bridging fibrosis (F2F3F4 vs. F0F1), standardized for the spectrum of fibrosis stages, and the comparison of FT AUROCs between adjacent stages. Two meta-analyses were performed: one combining all the published studies (random model), and one of an integrated data base combining individual data. Sensitivity analysis integrated the independency of authors, lenght of biopsy, prospective design, respect of procedures, comorbidities, and duration between biopsy and serum sampling.
  
  
  RESULTS
  A total of 30 studies were included which pooled 6,378 subjects with both FT and biopsy (3,501 HCV, 1,457 HBV, 267 NAFLD, 429 ALD, and 724 mixed). Individual data were analyzed in 3,282 patients. The mean standardized AUROC was 0.84 (95% CI, 0.83-0.86), without differences between causes of liver disease: HCV 0.85 (0.82-0.87), HBV 0.80 (0.77-0.84), NAFLD 0.84 (0.76-0.92), ALD 0.86 (0.80-0.92), mixed 0.85 (0.80-0.93). The AUROC for the diagnosis of the intermediate adjacent stages F2 vs. F1 (0.66; 0.63-0.68, n = 2,055) did not differ from that of the extreme stages F3 vs. F4 (0.69; 0.65-0.72, n = 817) or F1 vs. F0 (0.62; 0.59-0.65, n = 1788).
  
  
  CONCLUSIONS
  FibroTest is an effective alternative to biopsy in patients with chronic hepatitis C and B, ALD and NAFLD. The FT diagnostic value is similar for the diagnosis of intermediate and extreme fibrosis stages.
authors.affiliation: Service d'Hépato-Gastroentérologie, Groupe Hospitalier Pitié-Salpêtrière, Université Paris VI, CNRS ESA 8067 Paris, France. poynard@teaser.fr
authors.forename: Thierry
authors.initials: T
authors.lastname: Poynard
authors.forename: Rachel
authors.initials: R
authors.lastname: Morra
authors.forename: Philippe
authors.initials: P
authors.lastname: Halfon
authors.forename: Laurent
authors.initials: L
authors.lastname: Castera
authors.forename: Vlad
authors.initials: V
authors.lastname: Ratziu
authors.forename: Françoise
authors.initials: F
authors.lastname: Imbert-Bismut
authors.forename: Sylvie
authors.initials: S
authors.lastname: Naveau
authors.forename: Dominique
authors.initials: D
authors.lastname: Thabut
authors.forename: Didier
authors.initials: D
authors.lastname: Lebrec
authors.forename: Fabien
authors.initials: F
authors.lastname: Zoulim
authors.forename: Marc
authors.initials: M
authors.lastname: Bourliere
authors.forename: Patrice
authors.initials: P
authors.lastname: Cacoub
authors.forename: Djamila
authors.initials: D
authors.lastname: Messous
authors.forename: Mona
authors.initials: M
authors.lastname: Munteanu
authors.forename: Victor
authors.initials: V
authors.lastname: de Ledinghen
mesh_terms: D015415:Biomarkers / Q000097:blood; D002908:Chronic Disease; D006801:Humans; D008107:Liver Diseases / Q000097:blood / Q000175:diagnosis*; D008111:Liver Function Tests; D011237:Predictive Value of Tests; D012372:ROC Curve
chemical_list: D015415:Biomarkers