GPT and obstructive jaundice: The presentation of neonatal cholestatic jaundice in ARC syndrome is distinct from the other clinical presentations of neonatal cholestatic jaundice; patients who have ARC syndrome and develop neonatal cholestatic jaundice typically present with no biliary obstruction, have consistently low γ-glutamyl transpeptidase (γGT) levels, and have normal or slightly elevated aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels, although they have jaundice and liver cell dysfunction [17].