UGT1A1 gene mutations causes the condition. As a result, there can be reduced functionality of the bilirubin-UGT enzyme. Eventually it causes unconjugated<unk>  and jaundice as substance accumulates in the body due to the reduced ability of the enzyme.
Hereditary hyperbilirubinemia
Neonatal cholestasis
Neonatal hemochromatosis
Hemolytic jaundice
Congenital hepatic fibrosis
Dubin–Johnson syndrome
Progressive familial intrahepatic cholestasis
Intrahepatic cholestasis of pregnancy