Abstract
Background and Aims
Traditional laboratory markers are insensitive in distinguishing between patients with acute liver failure (ALF) who will require urgent liver transplantation (LT) from those who will recover spontaneously, particularly within 24 h of presentation. Coagulation factor-V (FV) may improve the accuracy of outcome prediction in ALF due to its predominant synthesis in the liver and short half-life in plasma.
Methods
Patients enrolled in the ALF Study Group Registry from a single site had FV determined within 24 h of presentation (Derivation-Cohort). Area under the receiver operating characteristic curves (AUROC) dichotomized by ALF etiology [acetaminophen (APAP) or non-APAP] were constructed to evaluate the diagnostic performance of FV for transplant-free-survival (TFS). Multivariate logistic regression modeling was performed using FV and other clinical variables to predict TFS. Accuracy of FV and multivariable model were performed in a Validation-Cohort from a different site.
Results
90-patients (56% with APAP) were included in the Derivation-Cohort. Median FV was significantly higher in TFS versus those who died/LT (31% vs. 15%, respectively; p = 0.001). When dichotomized by etiology, AUROC for FV was 0.77 for APAP (cutoff, sensitivity, specificity 10.5%, 79%, 69%, respectively) and 0.77 for non-APAP (22%, 85%, 67%, respectively). When the optimal cutoffs for FV in the Derivation-Cohort were applied to the Validation-Cohort (N = 51; 59% with APAP), AUROC for FV was 0.75 for APAP (sensitivity/specificity 81/44) and 0.95 for non-APAP (sensitivity/specificity 90/73). In multivariate analyses, AUROC for FV model was 0.86 in the Derivation-Cohort and 0.90 in the Validation-Cohort.
Conclusion
Admission FV may improve selection of patients who are likely to improve without LT.
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Abbreviations
- ALF:
-
Acute liver failure
- HE:
-
Hepatic encephalopathy
- TFS:
-
Transplant-free survival
- LT:
-
Liver transplantation
- FV:
-
Factor V
- NAC:
-
N-acetylcysteine
- APAP:
-
N-acetyl-p-aminophenol (acetaminophen)
- INR:
-
International normalized ratio of the prothrombin time
- VCU:
-
Virginia Commonwealth University
- IU:
-
Indiana University Hospital
- SD:
-
Standard deviation
- IQR:
-
Interquartile range
- AUROC:
-
Area underneath the receiver characteristic
- CI:
-
Confidence interval
- Sens:
-
Sensitivity
- Spec:
-
Specificity
- NPV:
-
Negative predictive value
- PPV:
-
Positive predictive value
- AIC:
-
Akaike information criterion
- MELD:
-
Model for end-stage liver disease
- ALFSG:
-
Acute liver failure study group prognostic index
- KCC:
-
Kings College Criteria
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Study Concept and Design: KRP and RTS, Data Analysis: KRP, MSG, JES and RTS, Manuscript Preparation: KRP, JES, and RTS, Manuscript Review: All authors.
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Patidar, K.R., Davis, B.C., Slaven, J.E. et al. Admission Factor V Predicts Transplant-Free Survival in Acute Liver Failure. Dig Dis Sci 66, 619–627 (2021). https://doi.org/10.1007/s10620-020-06197-3
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DOI: https://doi.org/10.1007/s10620-020-06197-3