- Clinical evidence of acute or chronic liver disease or liver injury as indicated by clinically significant abnormal liver function tests such as aspartate aminotransferase, alanine aminotransferase, gamma glutamyl-transpeptidase, alkaline phosphatase, (any ≥2.5 ULN ) or serum bilirubin (≥1.5 ULN) unless there is another more likely explanation (e.g. Gilbert's syndrome).