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Annals of Hepatology
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Inicio Annals of Hepatology P- 108 POLYMORPHISMS OF HLA (LOCI DR 4*) IN HISPANICS AS RISK FACTOR FOR DE-NOVO...
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Vol. 28. Núm. S1.
Abstracts of the 2022 Annual Meeting of the ALEH
(marzo 2023)
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Vol. 28. Núm. S1.
Abstracts of the 2022 Annual Meeting of the ALEH
(marzo 2023)
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P- 108 POLYMORPHISMS OF HLA (LOCI DR 4*) IN HISPANICS AS RISK FACTOR FOR DE-NOVO AUTOIMMUNE HEPATITIS AFTER LIVER TRANSPLANTATION
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Adriana Varón1, Luisa Santos1, Oscar Beltrán1, Martin Garzón1, Geovanny Hernandez1, Carolina Salinas1, Maria C. Torres1, Andres Murcia2, Jairo Rivera2, Gilberto Mejia2
1 Hepatology Department, La Cardio –Cardioinfantil Foundation, Bogotá, Colombia
2 Liver Trasplant Department, La Cardio –Cardioinfantil Foundation, Bogotá, Colombia
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Vol. 28. Núm S1

Abstracts of the 2022 Annual Meeting of the ALEH

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Introduction and Objectives

De-novo Autoimmune Hepatitis (De-novo AIH) after Liver Transplantation (LT) is an entity recently described and considered rare. Its importance relies on a severe clinical course, with graft loss in the short term, non-response to immunosuppressant therapies and requiring retransplantation even more than once. The Colombian population has a higher incidence of autoimmune liver diseases when compared to the literature, with a more aggressive clinical course and poorer response to classical immunosuppressive therapies requiring LT. This suggests a unique genetic component of the Colombian population that determines specific management and prognosis. The HLA (loci DR 3 * and DR 4 *) has been associated with De-novo AIH, especially in children, but no studies have been published in Hispanic Adults to date.

Materials and Methods

A retrospective observational study. The overall objective of this study was to determine the allelic frequencies of HLA (loci DR 3 * and DR 4 *) in donor livers of a Colombian population of patients with LT and its association with De-novo AIH.

Results

Out of 260 adult patients with LT at Cardioinfantil Foundation, eight were identified with De-novo AIH, all with graft loss and indication for liver retransplantation, 2 of them with graft loss for the second time in less than one year. HLA DR 4 was identified in all donors of patients who developed De-novo AIH.

Conclusions

The association between HLA DR-4 and De-novo AIH after LT establishes a precedent in the history of liver transplantation not only in Colombia but the world and requires immediate attention.

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