Agile 3+ and Agile 4, noninvasive tests for liver fibrosis, are excellent formulae to predict liver-related events in nonalcoholic fatty liver disease
Abstract
Aim
The noninvasive tests (NITs) Agile 3+ and Agile 4 effectively identify patients with nonalcoholic fatty liver disease (NAFLD) complicated with advanced fibrosis (F3–4) and cirrhosis (F4), respectively. Little information is available on associations between Agile scores and intra-/extrahepatic events. The aim of this study was to determine the predictive performance of Agile scores for intra-/extrahepatic events in Asian patients with biopsy-proven NAFLD.
Methods
We undertook a retrospective multicenter cohort study to investigate associations between intra-/extrahepatic events and two Agile scores, Agile 3+ and Agile 4. The scores were obtained by combining clinical parameters and liver stiffness measurement using transient elastography.
Results
Among 403 enrolled patients, 11 had liver-related events (LREs), including seven with hepatocellular carcinoma (HCC). The incidence of LREs and HCC showed a stepwise increase in the advanced fibrosis group (F3–4), Agile 3+ rule-in (F3–4, highly suspected), and Agile 4 rule-in (F4, highly suspected) groups, compared to their counterparts. Hazard ratios for LREs in the advanced fibrosis group, Agile 3+ rule-in, and Agile 4 rule-in groups were 4.05 (p = 0.03), 23.5 (p = 0.003), and 45.5 (p < 0.001), respectively. The predictive performance results for Agile 3+ and Agile 4 were 0.780 and 0.866, respectively, which were higher than for fibrosis (0.595). Unlike for LREs, Agile scores failed to identify patients with extrahepatic events, including cardiovascular events and extrahepatic cancer.
Conclusions
Agile 3+ and Agile 4 scores are excellent NITs for predicting LREs in patients with NAFLD, possibly without histological assessment.
Graphical Abstract
Patients with nonalcoholic fatty liver disease in high-risk groups (F3–4 of fibrosis stage, rule-in [IN] of Agile 3+, and IN of Agile 4) showed a stepwise increase of liver-related events. Hazard ratios of the high-risk groups were much higher in Agile 3+ and Agile 4 than fibrosis, compared to their counterparts.
CONFLICT OF INTEREST STATEMENT
Masato Yoneda received a research grant from Kowa Co. Ltd. Takumi Kawaguchi received honoraria from Taisho Pharmaceutical Co., Ltd., Kowa Company, Ltd., Otsuka Pharmaceutical Co., Ltd., Eisai Co., Ltd., Janssen Pharmaceutical K.K., AbbVie GK., and ASKA Pharmaceutical Co., Ltd., and a research grant from Eisai Co., Ltd. The other authors declare no conflicts of interest.
Open Research
DATA AVAILABILITY STATEMENT
All datasets used and analyzed in the present study are included in the manuscript.