As we might have expected, the prevalence of obesity (BMI > 30kg/m2) was greater in those with each indicator of NAFLD, but was greatest for USS steatosis (60%, 20% and 12% for USS steatosis, elevated ALT and elevated AST, respectively, compared to 5% for participants without these indicators). This evidence concerns the gene GPT and obesity due to melanocortin 4 receptor deficiency.