Triglyceride-Glucose Index and Hepatic Steatosis Index for the assessment of liver steatosis in HCV patients

BACKGROUND: Liver steatosis in patients with chronic infection of hepatitis C virus (HCV) is important from multiple standpoints: faster disease progression, more frequent hepatocellular carcinoma and cirrhosis development or worse therapy response. Liver biopsy as diagnostic method, is in recent years more and more challenged due to its well-known flaws. Hepatic steatosis index (HSI) and triglyceride-glucose (TyG) Index, are surrogate scores developed in the first place for noninvasive assessment of steatosis in patients with nonalcoholic fatty liver disease (NAFLD). However, their use in the context of chronic hepatitis C (CHC) virus infection is still unclear. Aim of our study was to assess the accuracy of both HSI and TyG index in patients with CHC.METHODS: The cohort included 814 patients with CHC infection in whom liver biopsy was performed. After imple-menting strict criteria for sample adequacy and necessary data, 424 patients were finally enrolled in our study. Histologi-cal findings were used as a reference point, and surrogate scores HSI and TyG index were expressed through receiver operating characteristic (ROC) curves in order to assess their ability in determining patients without (<5%) or with steatosis (>5%), but also to address their ability in assessing between different degrees of steatosis.RESULTS: The average age of study population was 37.09 years and the majority of patients were men (67%). Liver steatosis was detected in approximately half of the liver biopsy samples (50.4%). About 5% of them had severe steatosis. The area under the ROC curve values for HSI and TyG index when detecting liver steatosis were 0.76 and 0.629, respec-tively. Similar values were obtained comparing between absence of steatosis and mild steatosis (5-30%).CONCLUSIONS: Non-invasive surrogate scores HSI and TyG index in CHC patients, have good performance to detect the presence of steatosis. In this context, these tools are cheap, widely available and could be valuable asset in liver ste-atosis assessment outside liver biopsy.(Cite this article as: Preveden T, Veres B, Ruzic M, Pete M, Bogic S, Kovacevic N, et al. Triglyceride-Glucose Index and Hepatic Steatosis Index for the assessment of liver steatosis in HCV patients. Minerva Gastroenterol 2023;69:254-60. DOI: 10.23736/S2724-5985.22.03168-0)

Automated summary

This study aimed to evaluate the accuracy of the non-invasive surrogate scores HSI and TyG index in detecting liver steatosis in patients with chronic hepatitis C. The results showed that both scores have good performance in detecting liver steatosis and could be valuable assets in assessing liver steatosis outside of liver biopsy.