RCAN2 and metabolic dysfunction-associated steatotic liver disease: In order to further evaluate the association between serum RCAN2 levels and NAFLD risk, all subjects in the study were divided into three groups according to serum RCAN2 tertiles (lowest: < 8.03 ng/ml; median: 8.03–10.82 ng/ml; highest: ≥10.82 ng/ml).