Another patient diagnosed with NICCD (P17) was compound heterozygous for two P variants (c.1638_1660dup and c.852_855delTATG) of the SLC25A13 gene with a normal citrulline (Cit) level at the first screening but an increased Cit level at reexamination. The gene discussed is SLC25A13; the disease is neonatal intrahepatic cholestasis due to citrin deficiency.