ABSTRACT Objective: This study was designed to investigate the possible effect of the insulin receptor substrate 1 (IRS1) gene rs1801276 polymorphism on the risk of nonalcoholic fatty liver disease (NAFLD). Subjects and methods: The rs1801276 polymorphism was investigated in 127 controls and 123 biopsy-proven NAFLD patients using PCR-RFLP. Results: No deviation from Hardy-Weinberg equilibrium was discovered for the rs1801276 variant of IRS1 in either NAFLD patients or controls (P>0.05). The distribution of different rs1801276 genotypes and alleles showed significant variations […]