GPT and obesity due to melanocortin 4 receptor deficiency: In a pediatric group, the risk factors for NAFLD include obesity, insulin resistance and hypertriglyceridemia.14 The major features are a higher rate in male children, with serum alanine aminotransferase (ALT) levels that are usually higher than serum aspartate aminotransferase (AST) levels, and with hypertriglyceridemia and vague abdominal pain (which is usually the main reason for seeking clinical evaluation).14-16