What does this research mean for the field?

DWI abnormality of the hippocampal CA1 area is a good biomarker for diagnosing HHV-6-positive or -negative PALE in children. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This research aims to identify biomarkers for limbic encephalitis related to human herpesvirus infections in children with stem cell transplants.

February 27, 2026Open Access

Human herpesvirus 6 and non-human herpesvirus 6 limbic encephalitis in children with allogeneic stem cell transplantation: A case series

Key Points

This research aims to identify biomarkers for limbic encephalitis related to human herpesvirus infections in children with stem cell transplants.
Presented case series of children who underwent allogeneic stem cell transplantation
Used DWI (Diffusion Weighted Imaging) to identify abnormalities in the hippocampal CA1 area
Assessed both HHV-6 positive and negative cases for differences in symptoms and imaging
DWI abnormality in the CA1 area serves as a reliable biomarker for diagnosing PALE
Identified glutamatergic dysregulation and cytotoxic edema in the hippocampus as possible mechanisms involved in PALE

Abstract

A DWI abnormality of the hippocampal CA1 area is a good biomarker for the diagnosis of HHV-6-positive or -negative PALE in children. Glutamatergic dysregulation and hippocampal cytotoxic edema may be involved in PALE.

Human herpesvirus 6 and non-human herpesvirus 6 limbic encephalitis in children with allogeneic stem cell transplantation: A case series

Key Points

Abstract

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