Metabolic Burden and Hyperuricemia Are Associated With CKD‐Related Outcomes in Individuals With and Without Steatotic Liver Disease

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AIM: Although steatotic liver disease (SLD) has been associated with chronic kidney disease (CKD), it remains unclear whether CKD-related outcomes are driven by hepatic steatosis itself or by accompanying cardiometabolic abnormalities. We investigated the relative contribution of hepatic steatosis and cardiometabolic risk factors to CKD-related outcomes using a large Japanese health screening cohort. METHODS: ) and proteinuria. Multivariable logistic regression and trend analyses were performed to identify factors associated with these outcomes. RESULTS: Compared with non-SLD participants, those with SLD exhibited a higher burden of cardiometabolic abnormalities. Type 2 diabetes mellitus, obesity, and hyperuricemia were independently associated with proteinuria, whereas advanced age (≥ 65 years), low alcohol intake, and hyperuricemia were strongly associated with reduced eGFR. After multivariable adjustment, SLD showed an inverse association with CKD-related outcomes. In both SLD and non-SLD populations, the prevalence of CKD-related outcomes increased stepwise with a higher number of cardiometabolic risk factors. Incorporation of hyperuricemia significantly improved model fit for reduced eGFR (Δ-2 log likelihood = 119.4, p < 0.001) and modestly improved model fit for proteinuria (p = 0.002). CONCLUSIONS: CKD-related outcomes were more strongly associated with the burden of cardiometabolic abnormalities than with hepatic steatosis itself, and these associations were consistent in individuals with and without SLD. Hyperuricemia provided incremental value for renal risk stratification within this cardiometabolic framework, underscoring the importance of comprehensive metabolic risk assessment beyond liver fat status.

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