Cell Mol Immunol. 2021 Sep 27; doi: 10.1038/s41423-021-00768-8. Epub 2021 Sep 27.
Autoimmmune hepatitis.
Cellular & molecular immunology
Benedetta Terziroli Beretta-Piccoli, Giorgina Mieli-Vergani, Diego Vergani
Affiliations
Affiliations
- Epatocentro Ticino & Facoltà di Scienze Biomediche, Università della Svizzera Italiana, Lugano, Switzerland. [email protected].
- Institute for Research in Biomedicine, Bellinzona, Switzerland. [email protected].
- King's College London Faculty of Life Sciences & Medicine at King's College Hospital, London, UK. [email protected].
- King's College London Faculty of Life Sciences & Medicine at King's College Hospital, London, UK.
- Paediatric Liver, GI and Nutrition Centre, MowatLabs, King's College Hospital, London, UK.
- Institute of Liver Studies, MowatLabs, King's College Hospital, London, UK.
PMID: 34580437
PMCID: PMC8475398 DOI: 10.1038/s41423-021-00768-8
Abstract
Autoimmune hepatitis (AIH) is a T-cell mediated, inflammatory liver disease affecting all ages and characterized by female preponderance, elevated serum transaminase and immunoglobulin G levels, positive circulating autoantibodies, and presence of interface hepatitis at liver histology. AIH type 1, affecting both adults and children, is defined by positive anti-nuclear and/or anti-smooth muscle antibodies, while type 2 AIH, affecting mostly children, is defined by positive anti-liver-kidney microsomal type 1 and/or anti-liver cytosol type 1 antibody. While the autoantigens of type 2 AIH are well defined, being the cytochrome P4502D6 (CYP2D6) and the formiminotransferase cyclodeaminase (FTCD), in type 1 AIH they remain to be identified. AIH-1 predisposition is conferred by possession of the MHC class II HLA DRB1*03 at all ages, while DRB1*04 predisposes to late onset disease; AIH-2 is associated with possession of DRB1*07 and DRB1*03. The majority of patients responds well to standard immunosuppressive treatment, based on steroid and azathioprine; second- and third-line drugs should be considered in case of intolerance or insufficient response. This review offers a comprehensive overview of pathophysiological and clinical aspects of AIH.
© 2021. The Author(s).
Keywords: Autoimmune Hepatitis; Genetic Predisposition; Immunopathophysiology; Treatment
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