Development of an accurate index for predicting outcomes of patients with acute liver failure

  • Rutherford A
  • King L
  • Hynan L
 et al. 
  • 1

    Readers

    Mendeley users who have this article in their library.
  • N/A

    Citations

    Citations of this article.

Abstract

Background & Aims: Patients with acute liver failure (ALF) have high mortality and frequently require liver transplantation (LT); few reliable prognostic markers are available. Levels of M30, a cleavage product of cytokeratin-18 caspase, are significantly increased in serum samples from patients with ALF who die or undergo LT. We developed a prognostic index for ALF based on level of M30 and commonly measured clinical variables (called the Acute Liver Failure Study Group [ALFSG] index) and compared its accuracy with that of the King's College criteria (KCC) and Model for End Stage Liver Disease (MELD). We also validated our model in an independent group of patients with ALF. Methods: Serum levels of M30 and M65 antigen (the total cytokeratin-18 fragment, a marker of apoptosis and necrosis) were measured on 3 of the first 4 days following admission of 250 patients with ALF. Logistic regression was used to determine whether the following factors, measured on day 1, were associated with LT or death: age, etiology; coma grade; international normalized ratio (INR); serum pH; body mass index; levels of creatinine, bilirubin, phosphorus, arterial ammonia, and lactate; and log10 M30 and log10 M65. The area under the receiver operating characteristic (AUROC) was calculated for the ALFSG and other indices. Results: Coma grade, INR, levels of bilirubin and phosphorus, and log10 M30 value at study entry most accurately identified patients who would require LT or die. The ALFSG index identified these patients with 85.6% sensitivity and 64.7% specificity. Based on comparison of AUROC values, the ALFSG Index (AUROC, 0.822) better identified patients most likely to require LT or die than the KCC (AUROC, 0.654) or MELD (AUROC, 0.704) (P =.0002 and P =.0010, respectively). We validated these findings in a separate group of 250 patients with ALF. Conclusions: The ALFSG index, a combination of clinical markers and measurements of the apoptosis biomarker M30, better predicts outcomes of patients with ALF than the KCC or MELD; ClinicalTrials.gov, number NCT00518440. © 2012 AGA Institute.

Author-supplied keywords

  • [Cell Death Marker, Liver Disease Progression, Pro

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Authors

  • A. Rutherford

  • L.Y. King

  • L.S. Hynan

  • C. Vedvyas

  • W. Lin

  • W.M. Lee

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free