GPT and obesity due to melanocortin 4 receptor deficiency: The proportion of boys with ALT above the normal range (ALT >28 IU/L) was 46.5 % in the obesity group, 13.7 % in the overweight group, and 1.8 % in the non-overweight/obesity group; the proportion of girls with ALT above the normal range (ALT >19 IU/L) was 34.6 % in the obesity group, 9.1 % in the overweight group, and 3.3 % in the non-overweight/obesity group.