For this disorder, 3 age-dependent phenotypes have been reported thus far, i.e. Neonatal Intrahepatic Cholestasis caused by Citrin Deficiency (NICCD) in neonates or infants [3], adult-onset citrullinemia type II (CTLN2) in adolescents or adults, and Failure to Thrive and Dyslipidemia caused by Citrin Deficiency (FTTDCD) in older children [4, 5]. This evidence concerns the gene SLC25A13 and intrahepatic cholestasis.