Volume 29, Issue 12 pp. 1134-1142
ORIGINAL ARTICLE

Hepatitis E prevalence and infection in solid-organ transplant recipients in the United States

Niharika Samala

Corresponding Author

Niharika Samala

Division of Gastroenterology, Department of Medicine, Indiana University, Indianapolis, Indiana, USA

Correspondence

Niharika Samala, 702 Rotary Circle, Indianapolis, IN, 46202, USA.

Email: [email protected]

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Richard Y. Wang

Richard Y. Wang

Department of Transfusion Medicine, National Institutes of Health, Bethesda, Maryland, USA

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Sungyoung Auh

Sungyoung Auh

Office of the Director, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA

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Abdalla Kara Balla

Abdalla Kara Balla

MedStar Georgetown Transplant Institute, MedStar Georgetown University Hospital, Washington, District of Columbia, USA

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Lara Dakhoul

Lara Dakhoul

Division of Gastroenterology, Department of Medicine, Indiana University, Indianapolis, Indiana, USA

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Harvey J. Alter

Harvey J. Alter

Department of Transfusion Medicine, National Institutes of Health, Bethesda, Maryland, USA

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Patrizia Farci

Patrizia Farci

Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA

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Marwan Ghabril

Marwan Ghabril

Division of Gastroenterology, Department of Medicine, Indiana University, Indianapolis, Indiana, USA

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Michael R. Lucey

Michael R. Lucey

Division of Gastroenterology and Hepatology, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA

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Amol S. Rangnekar

Amol S. Rangnekar

MedStar Georgetown Transplant Institute, MedStar Georgetown University Hospital, Washington, District of Columbia, USA

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K. Rajender Reddy

K. Rajender Reddy

Division of Gastroenterology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA

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Marc G. Ghany

Marc G. Ghany

Liver Disease Branch (LDB), National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, USA

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First published: 29 August 2022
Citations: 1

Abstract

Hepatitis E virus (HEV) is the most common cause of acute viral hepatitis worldwide. An increased risk for HEV infection has been reported in organ-transplant recipients, mainly from Europe. Prospective data on HEV prevalence in the United States (U.S.) organ transplant population are limited. To determine the prevalence and factors associated with HEV infection among solid organ transplant-recipients, we conducted a prospective, cross-sectional, multicentre study among transplant-recipients and age- and organ-matched waitlist patients. Participants answered a risk-exposure questionnaire and were tested for HEV-RNA (in-house PCR), HEV-IgG, and IgM (ELISA, Wantai). Among 456 participants, 224 were transplant-recipients, and 232 were waitlist patients. The mean age was 58 years, 35% female, and 74% White. HEV seroprevalence of the entire cohort was 20.2% and associated with older age (p < 0.0001) and organ transplantation (p = 0.02). The HEV seropositivity was significantly higher among transplant-recipients compared with waitlist patients (24% vs. 16.4%, p = 0.042). Among transplant recipients, relative-risk of being HEV seropositive increased with older age (RR = 3.4 [1.07–10.74] in patients >70 years compared with ≤50 years, p = 0.037); history of graft hepatitis (2.2 [1.27–3.72], p = 0.005); calcineurin inhibitor use (RR = 1.9 [1.03–3.34], p = 0.02); and kidney transplantation (2.4 [1.15–5.16], p = 0.02). HEV-RNA, genotype 3 was detected in only two patients (0.4%), both transplant-recipients. HEV seroprevalence was higher among transplant-recipients than waitlist patients. HEV should be considered in transplant-recipients presenting with graft hepatitis. Detection of HEV-RNA was rare, suggesting that progression to chronic HEV infection is uncommon in transplant-recipients in the U.S.

CONFLICT OF INTEREST

The authors of this manuscript have no conflicts of interest to disclosure pertinent to the study.

DATA AVAILABILITY STATEMENT

The datasets generated during the current study are not publicly available due to presence of protected health information, but de-identified data are available from the corresponding author on reasonable request.

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