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Hepatitis E virus infection-triggered intrahepatic cholestasis: A case report
Stephan Drexler1, Frederic Haedge2, Susanne N Weber3
1Department of Medicine III, University Hospital Aachen, Aachen 52070, Germany. sdrexler@ukaachen.de.
Background:
Genetic disorders affecting hepatobiliary transporters can be triggered by various factors, resulting in marked cholestasis.
Case Summary:
We report two patients who experienced a severe episode of intrahepatic cholestasis triggered by an acute hepatitis E virus infection. Following an extensive clinical examination that ruled out common causes of cholestatic liver damage, we conducted next-generation sequencing to determine the genetic profiles of the patients. The analysis revealed several known and unknown variants in genes associated with hepatobiliary transporters and bile salt regulation, including ATP8B1, ABCB11, ABCB4, MYO5B, and FXR. For a comprehensive understanding of the pathophysiology, we performed ClinVar analysis and utilized PolyPhen for bioinformatic prediction of functional impact. Both patients exhibited rapid symptom improvement and a decrease in hyperbilirubinemia when treated with either rifampicin or bezafibrate.
Conclusion:
Our findings introduce hepatitis E viral infection as a novel trigger for intrahepatic cholestasis, and we categorize the significance of the various genetic variants based on the current state of research.
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