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Background: Transarterial chemoembolization (TACE) is widely used for hepatocellular carcinoma treatment but side effects hamper tolerance. Dexamethasone reduces TACE side effects in patients with viral hepatitis, but data regarding alcohol and metabolic liver diseases are lacking. We aimed to evaluate the efficacy of dexamethasone in preventing TACE-associated adverse events in European populations with predominantly alcoholic and metabolic cirrhosis., Methods: All cirrhotic patients undergoing TACE in our center between 2017 and 2021 were included. Dexamethasone was added to our protocol from 2019. Using a quasi-experimental study design, patients before and after introduction of dexamethasone in our procedure were compared. Factors associated with TACE adverse events were assessed by univariate and multivariate analysis. A sensitivity analysis was performed using propensity scores for covariate adjustment., Results: 234 patients undergoing 398 TACE procedure were included. Cirrhosis was predominantly of alcohol or metabolic etiology (86.7 %). Dexamethasone was administered in 99 procedures (24.9 %). Incidence of fever and encephalopathy at day 2 after TACE was lower in the Dexamethasone group (p < 0.001; p = 0.02 respectively). In multivariate analysis, dexamethasone was associated with lower occurrence of fever (OR=0.03; p < 0.001), lower analgesics use (OR=0.11; p = 0.002), milder liver and kidney function impairment (OR=0.98; p = 0.001 and OR=0.94; p < 0.001 for bilirubin and creatinine variation respectively). Propensity score-adjusted analyses yielded similar results., Conclusion: Dexamethasone improves TACE tolerance in a population of predominantly metabolic and alcohol cirrhosis., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)