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Longitudinal Clinical Outcomes and Mortality from Steatotic Liver Disease: A Meta-Analysis
Do Han Kim1, Donghyun Ko2, Pojsakorn Danpanichkul3
1Department of Medicine, Mount Sinai Morningside and West, Icahn School of Medicine at Mount Sinai, New York, NY.
Introduction:
The updated consensus introduces "steatotic liver disease" as an umbrella term for all patients with hepatic steatosis, with specific subtypes such as metabolic dysfunction-associated steatotic liver disease (MASLD), MetALD (MASLD with moderate alcohol intake), and alcohol-associated liver disease. Understanding the characteristics and long-term outcomes of these subtypes is essential.
Methods:
A systematic review and meta-analysis examined studies published between January 2023 and August 2024 in MEDLINE and EMBASE on liver-related events, cardiovascular outcomes, and mortality across steatotic liver disease subtypes.
Results:
A total of 13 studies, involving 17.6 million patients were included. Of these, 6.8 million individuals were diagnosed with steatotic liver disease. Subtype analysis revealed a significant increase in liver-related events and composite cardiovascular outcomes across all steatotic liver disease subtypes compared to non-steatotic liver disease. Patients with MetALD and alcohol-associated liver disease were associated with a higher risk of all-cause mortality when compared to non-steatotic liver disease. Compared to MASLD, patients with MetALD and alcohol-associated liver disease significantly elevated the risk of liver-related events and individuals with alcohol-associated liver disease were associated with increased risk of all-cause mortality. Sensitivity analysis demonstrated that certain mortality outcomes were no longer significant.
Conclusion:
Individuals across steatotic liver disease face an elevated risk of liver-related events, liver cancer, and cardiovascular outcomes. For liver-related events, the risk is progressively higher across MASLD, MetALD, and alcohol-associated liver disease, respectively. Misclassification may be introduced when using different diagnostic methods, leading to changes in outcomes. These findings validate the impact of the new classification in predicting outcomes.
