In the past decade, human genome-wide association studies (GWAS) have revealed that a group of genes encoding LD-associated proteins such as FIT2 (fat storage inducing transmembrane protein 2), adipose triglyceride lipase (ATGL; PNPLA2), and PNPLA3 (patatin-like phospholipase domain containing 3) plays an important role in the pathogenesis and progression of NAFLD. This evidence concerns the gene PNPLA2 and metabolic dysfunction-associated steatotic liver disease.