For example, Wang et al. [50], and Tutunchi et al. [51] found that low serum Nrg4 levels were inversely correlated with the proxies of adiposity and impaired lipid metabolism, such as BMI, WC, TG, and HOMA-IR in children and adults with NAFLD. Here, NRG4 is linked to metabolic dysfunction-associated steatotic liver disease.