Volume 77, Issue 2 pp. 153-159
Review Articles

The Liver in Hemophagocytic Lymphohistiocytosis

Not an Innocent Bystander

Tamir Diamond MD

Corresponding Author

Tamir Diamond MD

Division of Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Philadelphia, Philadelphia, PA

Department of Pediatrics, University of Pennsylvania, Philadelphia, PA

Address correspondence and reprint requests to Tamir Diamond, MD, Division of Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA 19104 (e-mail: [email protected]).Search for more papers by this author
Aaron D. Bennett MD

Aaron D. Bennett MD

Division of Gastroenterology, Hepatology and Nutrition, Children’s Hospital of Philadelphia, Philadelphia, PA

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Edward M. Behrens MD

Edward M. Behrens MD

Department of Pediatrics, University of Pennsylvania, Philadelphia, PA

Division of Rheumatology, Children’s Hospital of Philadelphia, Philadelphia, PA

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First published: 25 April 2023
Citations: 6

T.D. was supported by the National Center for Advancing Translational Sciences of the National Institutes of Health under award number KL2TR001879. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. T.D. and A.D.B. were supported by the Fred and Suzanne Biesecker Pediatric Liver Center at Children’s Hospital of Philadelphia. The remaining authors report no conflicts of interest.

Abstract

Hemophagocytic lymphohistiocytosis (HLH) is a rare multisystemic hyperinflammatory disease commonly associated with hepatic dysfunction. Liver injury is mediated by unchecked antigen presentation, hypercytokinemia, dysregulated cytotoxicity by natural killer and CD8 T cells, and disruption of intrinsic hepatic metabolic pathways. Over the past decade, there have been significant advances in diagnostics and expansion in therapeutic armamentarium for this disorder allowing for improved morbidity and mortality. This review discusses the clinical manifestations and pathogenesis of HLH hepatitis in both familial and secondary forms. It will review growing evidence that the intrinsic hepatic response to hypercytokinemia in HLH perpetuates disease progression and the novel therapeutic approaches for patients with HLH-hepatitis/liver failure.

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