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2018 ; 2
(4
): 455-466
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A single blood test adjusted for different liver fibrosis targets improves
fibrosis staging and especially cirrhosis diagnosis
#MMPMID29619423
Calès P
; Boursier J
; Oberti F
; Moal V
; Fouchard Hubert I
; Bertrais S
; Hunault G
; Rousselet MC
Hepatol Commun
2018[Apr]; 2
(4
): 455-466
PMID29619423
show ga
Fibrosis blood tests are usually developed using significant fibrosis, which is a
unique diagnostic target; however, these tests are employed for other diagnostic
targets, such as cirrhosis. We aimed to improve fibrosis staging accuracy by
simultaneously targeting biomarkers for several diagnostic targets. A total of
3,809 patients were included, comprising 1,012 individuals with chronic hepatitis
C (CHC) into a derivation population and 2,797 individuals into validation
populations of different etiologies (CHC, chronic hepatitis B, human
immunodeficiency virus/CHC, nonalcoholic fatty liver disease, alcohol) using
Metavir fibrosis stages as reference. FibroMeter biomarkers were targeted for
different fibrosis-stage combinations into classical scores by logistic
regression. Independent scores were combined into a single score reflecting
Metavir stages by linear regression and called Multi-FibroMeter Version Second
Generation (V2G). The primary objective was to combine the advantages of a test
targeted for significant fibrosis (FibroMeter(V2G)) with those of a test targeted
for cirrhosis (CirrhoMeter(V2G)). In the derivation CHC population, we first
compared Multi-FibroMeter(V2G) to FibroMeter(V2G) and observed significant
increases in the cirrhosis area under the receiver operating characteristic curve
(AUROC), Obuchowski index (reflecting all fibrosis-stage AUROCs), and
classification metric (six classes expressed as a correctly classified
percentage) and a nonsignificant increase in significant fibrosis AUROC.
Thereafter, we compared it to CirroMeter(V2G) and observed a nonsignificant
increase in the cirrhosis AUROC. In all 3,809 patients, respective accuracies for
Multi-FibroMeter(V2G) and FibroMeter(V2G) were the following: cirrhosis AUROC,
0.906 versus 0.878 (P < 0.001; versus CirroMeter(V2G), 0.897, P = 0.014);
Obuchowski index, 0.795 versus 0.791 (P = 0.059); classification, 86.0% versus
82.1% (P < 0.001); significant fibrosis AUROC, 0.833 versus 0.832 (P = 0.366).
Multi-FibroMeter(V2G) had the highest correlation with the area of portoseptal
fibrosis and the highest reproducibility over time. Correct classification rates
of Multi-FibroMeter with hyaluronate (V2G, 86.0%) or without (V3G, 86.1%) did not
differ (P = 0.938). Conclusion: Multitargeting biomarkers significantly improves
fibrosis staging and especially cirrhosis diagnosis compared to classical
single-targeted blood tests. (Hepatology Communications 2018;2:455-466).