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We aimed to evaluate the associations between PFAS exposures, and liver enzymes and vibration controlled transient elastography (VCTE) biomarkers of metabolic dysfunction associated steatotic liver disease (MASLD) in adult National Health and Nutrition Examination Survey (NHANES) 2017 to 2018. VCTE was determined by FibroScan. Serum PFAS (n\u2009=\u200914), measured by mass spectrometry, were analyzed individually and by principal component (PC). Univariate and multivariable associations were determined between PFAS exposures and liver disease outcome variables: alanine aminotransferase (ALT), controlled attenuation parameter (CAP), liver stiffness measurement (LSM), FibroScan-based Score (FAST), using R. About 1,400 participants including 50% women with a mean age of 48\u2009\u00b1\u200919\u2009years and a mean BMI of 29\u2009\u00b1\u20097\u2009kg\/m2 were analyzed. Four PFAS clustered to PC1, whereas 3 PFAS clustered to PC2. PC1 was significantly associated with ALT (\u03b2\u2009=\u20090.028), CAP (\u03b2\u2009=\u20090.041), LSM (\u03b2\u2009=\u20090.025), and FAST (\u03b2\u2009=\u20090.198) in univariate analysis. Individual PFAS exposures were oftentimes inversely associated with these measurements in multivariate analysis. In adult NHANES 2017\u20132018, PFAS may not be a significant burden for MASLD, because of the inconsistent associations between the environmental PFAS exposures and biomarkers of liver steatosis, inflammation, and fibrosis. More data are required to better understand the relationships between PFAS exposures and liver disease.<\/jats:p>","DOI":"10.1093\/toxsci\/kfae106","type":"journal-article","created":{"date-parts":[[2024,8,16]],"date-time":"2024-08-16T17:09:48Z","timestamp":1723828188000},"page":"142-151","source":"Crossref","is-referenced-by-count":7,"title":["Associations between per- and polyfluoroalkyl substance exposures and metabolic dysfunction associated steatotic liver disease (MASLD) in adult National Health and Nutrition Examination Survey 2017 to 2018"],"prefix":"10.1093","volume":"202","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1993-5223","authenticated-orcid":false,"given":"Niharika","family":"Samala","sequence":"first","affiliation":[{"name":"Department of Medicine, Division of Gastroenterology & Hepatology, Indiana University School of Medicine , Indianapolis, IN 46202,","place":["United 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