GPT and obesity due to melanocortin 4 receptor deficiency: Although fatty liver was observed on imaging ultrasound in patients with obesity, there were no significant differences in liver function indicators, ALT, AST, GGT, and ALP (p = 0.065, p = 0.985 p = 0.189, and p = 0.14, respectively), nor in indicators of renal function, including urea nitrogen, creatinine, and simple glomerular filtration rate (p = 0.659, p = 0.612, and p = 0.427, respectively).