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Published on: November 7, 2020
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Antibody-Mediated Rejection After Liver Transplant
1Department of Pathology and Cell Biology, Columbia University, 630 West 168th Street, VC14-238, New York, NY 10032, USA.
Gastroenterology Clinics of North America
|May 17, 2017
Summary
Antibody-mediated rejection (AMR) in liver transplants is less understood than in kidney or lung transplants. Diagnosis of acute AMR relies on specific criteria, while chronic AMR diagnosis is more challenging, with various treatments available for both.
Area of Science:
- Transplantation immunology
- Hepatology
- Graft rejection mechanisms
Background:
- Antibody-mediated rejection (AMR) is a significant concern in organ transplantation, yet its understanding in liver transplantation lags behind kidney and lung allografts.
- Acute AMR diagnosis in liver recipients involves specific clinical and histopathologic markers, including donor-specific antibodies and C4d staining.
- Chronic AMR presents diagnostic challenges due to less specific histological features compared to acute AMR.
Purpose of the Study:
- To delineate the diagnostic criteria and therapeutic strategies for antibody-mediated rejection in liver transplantation.
- To highlight the complexities in diagnosing chronic AMR in liver allograft recipients.
- To provide an overview of current treatment modalities for both acute and chronic AMR.
Main Methods:
- Review of clinical and histopathologic diagnostic criteria for acute AMR.
- Analysis of histological features associated with chronic AMR.
- Compilation of treatment options for AMR in liver transplant patients.
Main Results:
- Acute AMR diagnosis is established through a combination of serological, immunohistochemical (C4d staining), and histopathological findings, alongside the exclusion of alternative causes.
- Chronic AMR diagnosis is less defined histologically, posing greater clinical challenges.
- Treatment regimens for AMR encompass a range of immunosuppressive and targeted therapies.
Conclusions:
- Antibody-mediated rejection in liver transplantation requires further research to refine diagnostic criteria, particularly for chronic forms.
- Current treatment strategies for AMR involve a multi-faceted approach combining standard immunosuppression with advanced therapies.
- Improved understanding and diagnostic tools for AMR are crucial for enhancing long-term liver allograft survival.
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