SLC25A13 and citrullinemia: We also conducted a genetic study for her parents and found that the father carried the SLC25A13 mutation 851–854 del, and the mother carried the SLC25A13 mutation 615 + 5G > A. Based on the findings of cholestasis, citrullinemia, argininemia, neonatal steatosis, and SLC25A13 mutation, we diagnosed NICCD.