4.4 Article

Effect of Statin Use on Cancer-related Mortality in Nonalcoholic Fatty Liver Disease A Prospective United States Cohort Study

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JOURNAL OF CLINICAL GASTROENTEROLOGY
卷 56, 期 2, 页码 173-180

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LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MCG.0000000000001503

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no-alcoholic fatty liver disease; statin; hydroxymethylglutaryl-CoA reductase inhibitors; mortality; neoplasms

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This study, based on a large US prospective cohort, found that statin use is significantly associated with a decrease in cancer-related mortality among patients with NAFLD. These findings are important for guiding clinical decision making regarding statin use in NAFLD patients.
Background: Indications for use of statins are common among patients with nonalcoholic fatty liver disease (NAFLD). Epidemiologic studies have suggested a possible association between statins and decreased risk of malignancies. We hypothesized that statin use has a protective effect on cancer mortality in patients with NAFLD. Methods: Participants with NAFLD in 8 rounds of National Health and Nutrition Examination Survey (NHANES) were included in this study. Mortality data were obtained by linking the NHANES data to National Death Index. NAFLD was defined using the previously validated Hepatic Steatosis Index model. Results: A total of 10,821 participants with NAFLD were included and 23% were statin users (n=2523). Statin use was associated with a 43% lower risk of cancer mortality [hazard ratio (HR)=0.57, 95% confidence interval (CI): 0.43-0.75, P<0.001] in multivariable analysis. Statin use under 1 year did not show a significant effect on cancer mortality (HR=0.72, 95% CI: 0.46-1.12), while statin use for 1 to 5 years decreased cancer mortality by 35% (HR=0.65, 95% CI: 0.42-0.99, P=0.46), and statin use >5 years decreased cancer mortality by 56% (HR=0.44, 95% CI: 0.29-0.66, P<0.001). Statin use was associated with a significant decrease in the risk of cancer mortality in NAFLD patients with both low and high risk of liver fibrosis (HR=0.55, 95% CI: 0.38-0.81; and HR=0.53, 95% CI: 0.31-0.89, respectively). Conclusion: Using a large US prospective cohort, we showed statin use is associated with a considerable decrease in cancer-related mortality among patients with NAFLD. These results are important for clinical decision making, as statin indications are prevalent among NAFLD patients, but many do not receive benefit in the event that the statin is discontinued due to liver test abnormalities.

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