title: Correlation of liver biochemistry with liver stiffness in chronic hepatitis B and development of a predictive model for liver fibrosis.
abstract: Abstract Aim: To correlate liver stiffness with demographical factors and routine liver biochemistry and to assess the predictive value of these as potential markers of fibrosis.
  
  
  METHODS
  Transient elastography was performed in 1268 chronic hepatitis B (CHB) patients. According to a previous validated study for CHB, liver stiffness of >8.1 and >10.3 kPa were used as cut-off values for defining severe fibrosis and cirrhosis respectively.
  
  
  RESULTS
  Liver stiffness correlated positively with bilirubin, alkaline phosphatase (ALP), gamma-glutamyl transpeptidase (GGT), aspartate aminotransferase (AST), alanine aminotransferase (ALT), globulin, alpha-fetoprotein (AFP) and HBV DNA levels and negatively with albumin and platelet levels (P<0.05 for all correlations). From 13 parameters (age, sex, platelet, AST, ALT, GGT, AFP, albumin, globulin, bilirubin, ALP, HBV DNA and hepatitis B e-antigen), four best parameters (AST, platelet, GGT and AFP) were used to derive a liver stiffness model. Using log (index)=1.44+0.1490(GGT)+0.3308 log (AST)-0.5846 log (platelets)+0.1148 log (AFP+1) to predict both severe fibrosis and cirrhosis had area under the receiver operating characteristics curve of 0.85.
  
  
  CONCLUSIONS
  Routine liver biochemistry correlated well with liver stiffness in Asian CHB patients. A model using simple serum markers can predict liver stiffness, and further studies are required to validate the usefulness of these simple tests as non-invasive markers of fibrosis in CHB.
authors.affiliation: Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, Hong Kong.
authors.forename: James
authors.initials: J
authors.lastname: Fung
authors.forename: Ching-Lung
authors.initials: CL
authors.lastname: Lai
authors.forename: Daniel Yee-Tak
authors.initials: DY
authors.lastname: Fong
authors.forename: John Chi-Hang
authors.initials: JC
authors.lastname: Yuen
authors.forename: Danny Ka-Ho
authors.initials: DK
authors.lastname: Wong
authors.forename: Man-Fung
authors.initials: MF
authors.lastname: Yuen
mesh_terms: D000328:Adult; D000368:Aged; D000410:Alanine Transaminase / Q000097:blood; D000469:Alkaline Phosphatase / Q000097:blood; D001219:Aspartate Aminotransferases / Q000097:blood; D001663:Bilirubin / Q000097:blood; D054459:Elasticity Imaging Techniques; D005260:Female; D005916:Globulins / Q000032:analysis; D019694:Hepatitis B, Chronic / Q000473:pathology*; D006801:Humans; D008099:Liver / Q000378:metabolism*; D008103:Liver Cirrhosis / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D012372:ROC Curve; D018709:Statistics, Nonparametric; D000509:alpha-Fetoproteins / Q000032:analysis; D005723:gamma-Glutamyltransferase / Q000097:blood
chemical_list: D005916:Globulins; D000509:alpha-Fetoproteins; D005723:gamma-Glutamyltransferase; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase; D000469:Alkaline Phosphatase; D001663:Bilirubin