Summary
Background
Several steatosis biomarkers are available with limited independent validation.
Aim
To determine diagnostic value and limitations of several steatosis biomarkers using liver biopsy as reference standard in a large cohort of patients with suspected NAFLD.
Methods
Three hundred and twenty‐four consecutive liver biopsies were included. Histological steatosis was categorised as none (<5%), mild (5–33%), moderate (33–66%) and severe (>66%). Five steatosis biomarkers were measured: fatty liver index (FLI), NAFLD liver fat score (NAFLD‐LFS), hepatic steatosis index (HSI), visceral adiposity index (VAI) and triglyceride × glucose (TyG) index.
Results
Steatosis grades prevalence was: none 5%, mild 39%, moderate 30% and severe 27%. Except for VAI, the steatosis biomarkers showed a linear trend across the steatosis grades. However, their correlation with the histological amount of steatosis was only weak‐moderate. All steatosis biomarkers had an adequate diagnostic accuracy for the presence of steatosis: AUROCs for FLI, LFS, HSI, VAI and TyG were 0.83, 0.80, 0.81, 0.92 and 0.90. However, their ability to quantify steatosis was poor: none of them distinguished between moderate and severe steatosis and the AUROCs for predicting steatosis >33% were 0.65, 0.72, 0.65, 0.59 and 0.59 for FLI, LFS, HSI, VAI and TyG. Both fibrosis and inflammation significantly confounded the association between steatosis biomarkers and steatosis. The steatosis biomarkers were all correlated with HOMA‐IR, independent from histological steatosis.
Conclusions
All five steatosis biomarkers can diagnose steatosis and are correlated with insulin resistance. They are confounded by fibrosis and inflammation, and do not accurately quantify steatosis; this may limit their clinical utility. More research is needed to identify truly independent and quantitative markers of steatosis.
Background & AimsOptimally effective treatment for hepatitis C virus genotype 3 (GT3) is urgently needed, particularly in advanced liver disease. Daclatasvir plus sofosbuvir was efficacious in phase 3 studies. Real‐world data for daclatasvir+sofosbuvir in advanced GT3 infection are presented from the French Temporary Authorisation for Use programme, which allowed patients in need without other treatment options access to daclatasvir ahead of its market authorization.MethodsPatients with F3/F4 fibrosis and/or extrahepatic hepatitis C virus manifestations, post‐liver transplant hepatitis C virus recurrence and/or indication for liver/kidney transplant, were treated with daclatasvir+sofosbuvir (60+400 mg daily) for a recommended duration of 24 weeks. Addition of ribavirin and/or shorter treatment was at physician's discretion. The primary efficacy analysis was sustained virological response at post‐treatment week 12 (SVR12; modified intention‐to‐treat). Safety was assessed by spontaneous adverse event reporting.ResultsThe efficacy population comprised 333 patients, mostly cirrhotic (77%, of whom 18% were decompensated) and treatment experienced (72%). After 24 weeks of daclatasvir+sofosbuvir, SVR12 was 89% (174/196) overall (95% CI 83.6‐92.5%), 98% (43/44) without cirrhosis (95% CI 88.2‐99.6%) and 86% (129/150) with any degree of cirrhosis (95% CI 79.5‐90.7%), without SVR12 increase in those who received additional ribavirin for 24 weeks (SVR12 82% [50/61; 95% CI 70.5‐89.6%]). Among 516 GT3‐infected patients with safety data, 5 discontinued for adverse events and 11 died.ConclusionsDaclatasvir+sofosbuvir achieved high SVR12 rates and was well tolerated in this large real‐world cohort of GT3‐infected patients with advanced liver disease, without benefit of ribavirin in those treated 24 weeks.
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