J Hepatol 2021 Apr 16. Epub 2021 Apr 16.
Institute of Liver Studies, King's College Hospital, London, SE5 9RS, UK; School of Transplantation, Immunology and Mucosal Biology, Faculty of Life Sciences and Medicine, King's College London, London, UK; European Reference Network - Hepatological Diseases (ERN RARE-LIVER).
Background: Patients with autoimmune hepatitis (AIH) usually receive maintenance therapy with thiopurines, such as azathioprine (AZA) or mercaptopurine (MP). Genetic polymorphisms in AZA metabolism can lead to variations in thioguanine nucleotide (TGN) and 6-methylmercaptopurine (MMP), both of which can cause adverse drug reactions (ADR). In inflammatory bowel disease (IBD), a therapeutic TGN range (225-450 pmol/8x10 erythrocytes) has been identified to optimise effectiveness. Read More