Human herpesvirus 6 viremia and encephalitis in CAR T-cell recipients

S Stephanie T. Isaac (1Blood Transplant and Cell Therapies Program, Department of Haematology, Westmead Hospital, Westmead, NSW, Australia) D David C. Bishop (1Blood Transplant and Cell Therapies Program, Department of Haematology, Westmead Hospital, Westmead, NSW, Australia) F Fahad Shaikh (Mercy St. Vincent Medical Center, Toledo, Ohio, United States) K Kenneth Micklethwaite (1Blood Transplant and Cell Therapies Program, Department of Haematology, Westmead Hospital, Westmead, NSW, Australia) D David J. Gottlieb (Blood Transplant and Cell Therapies Program, Westmead Hospital, Sydney) E Emily Blyth (5Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia)

Abstract

Abstract Human herpesvirus 6 reactivation in chimeric antigen receptor T-cell recipients is reported to be rare. Our patient cohort (n = 119) experienced a sevenfold higher incidence of viremia than a previous study and 2 cases of encephalitis. Further studies are needed to determine risk factors for infection.

Article Details

Journal Blood
Volume / Issue Vol. 146, Issue 25
Published December 18, 2025
Pages 3124-3128
ISSN 0006-4971
Publisher Elsevier BV

Journal Info

Blood

Elsevier BV

ISSN: 0006-4971 Health Sciences

Authors (6)

S

Stephanie T. Isaac

1Blood Transplant and Cell Therapies Program, Department of Haematology, Westmead Hospital, Westmead, NSW, Australia

D

David C. Bishop

1Blood Transplant and Cell Therapies Program, Department of Haematology, Westmead Hospital, Westmead, NSW, Australia

F

Fahad Shaikh

Mercy St. Vincent Medical Center, Toledo, Ohio, United States

K

Kenneth Micklethwaite

1Blood Transplant and Cell Therapies Program, Department of Haematology, Westmead Hospital, Westmead, NSW, Australia

D

David J. Gottlieb

Blood Transplant and Cell Therapies Program, Westmead Hospital, Sydney

E

Emily Blyth

5Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia