CD4 and obesity due to melanocortin 4 receptor deficiency: Underweight recipients had a median [(interquartile range (IQR)] CD4 cell count of 444 (270–597) cells/mm3, recipients with normal BMI had a median (IQR) CD4 cell count of 513 (375–686) cells/mm3 while overweight/obesity recipients had a median (IQR) CD4 cell count of 577 (416–732) (p = 0.001).