POMC and congenital adrenal hyperplasia: When the model was applied to CAH patients only, ACTH (EC0.999; 95% CI 0.999-1.000; p=0.021) seems to be related to a shorter QTc, when normalizing for age (EC0.998, CI 95% 0.996-0.999; p=0.012), androstenedione levels, BMI, ABPM-24-hour mean SBP and smoking habit (Table 4, Model B).