This finding suggested that NTCP deficiency might work as one of the contributing factors that affect the bilirubin homeostasis, giving rise to the development of indirect hyperbilirubinemia, particularly in neonates who have very rich bilirubin sources but immature liver function to uptake, conjugate and excrete bilirubin [18, 19]. Here, SLC10A1 is linked to hyperinsulinemic hypoglycemia, familial, 4.