Mutations in human cytymegalovirus (Orthoherpesviridae: Herpesvirales: Cytomegalovirus: Cytomegalovirus humanbeta 5) UL97 gene lead to increase in viremia duration and poor antiviral response in recipients of allogeneic hematopoietic stem cells
- Authors: Tikhomirov D.S.1, Demin M.V.1, Serikova A.A.1, Biderman B.V.1, Sudarikov A.B.1, Filatov F.P.2, Tupoleva T.A.1
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Affiliations:
- National Medical Research Center for Hematology of the Ministry of Health of Russia
- I. Mechnikov Research Institute of Vaccines and Sera
- Issue: Vol 69, No 5 (2024)
- Pages: 449-458
- Section: ORIGINAL RESEARCH
- URL: https://journal-vniispk.ru/0507-4088/article/view/269834
- DOI: https://doi.org/10.36233/0507-4088-251
- EDN: https://elibrary.ru/vrdyiz
- ID: 269834
Cite item
Abstract
Introduction. Human cytomegalovirus (Orthoherpesviridae: Herpesvirales: Cytomegalovirus: Cytomegalovirus humanbeta 5) (HCMV) is one of the most commonly detected viruses in recipients of allogeneic hematopoietic stem cell (allo-HSCT) transplants. However, the emergence of resistance to antiviral drugs such as ganciclovir (GCV) poses a challenge in managing these patients.
This study aims to investigate the prevalence and impact of mutations in the HCMV UL97 gene associated with resistance to GCV on the course of infection among allo-HSCT patients.
Materials and methods. The study examined the association between UL97 mutations and the clinical course of HCMV infection in allo-HSCT patients. Genetic sequencing was performed to identify mutations, and their impact on viral replication and resistance to GCV was assessed.
Results and discussion. Six mutations were identified (D490A, T502A, C592G, C592F, E596G, C603W). C592G, C592F, E596G, and C603W are associated with resistance to antiviral drugs, while D490A and T502A described for the first time. When comparing patients with wild-type and those carrying the mutant variant, several parameters of peripheral blood were significantly lower in the former group. The median time to peak viral load following allo-HSCT, duration of viremia, and rate of virological response to high-dose therapy also differed significantly between the two groups.
Conclusion. It was shown that approximately one third (4 out of 14) of allogeneic stem cell transplant recipients had mutations associated with resistance to GCV. Patients carrying the mutant variant of HCMV had longer viremia and took longer to achieve a negative virological test result after starting high-dose therapy. Performing genotyping may help make more evidence-based therapeutic decisions.
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##article.viewOnOriginalSite##About the authors
Dmitriy S. Tikhomirov
National Medical Research Center for Hematology of the Ministry of Health of Russia
Email: memindisha@gmail.com
ORCID iD: 0000-0002-2553-6579
PhD in Biology, Head of the Laboratory for Analysis of Posttransfusion Viral Infections
Russian Federation, 125167, MoscowMikhail V. Demin
National Medical Research Center for Hematology of the Ministry of Health of Russia
Author for correspondence.
Email: memindisha@gmail.com
ORCID iD: 0000-0002-7579-3442
PhD in Biology, Biologist of the Laboratory for the Analysis of Posttransfusion Viral Infections
Russian Federation, 125167, MoscowAnastasia A. Serikova
National Medical Research Center for Hematology of the Ministry of Health of Russia
Email: memindisha@gmail.com
ORCID iD: 0009-0009-6094-3223
Specialist of the Laboratory for the Analysis of Posttransfusion Viral Infections
Russian Federation, 125167, MoscowBella V. Biderman
National Medical Research Center for Hematology of the Ministry of Health of Russia
Email: memindisha@gmail.com
ORCID iD: 0000-0002-6253-3334
PhD in Biology, Senior Researcher at the Laboratory of Molecular Hematology
Russian Federation, 125167, MoscowAndrey B. Sudarikov
National Medical Research Center for Hematology of the Ministry of Health of Russia
Email: memindisha@gmail.com
ORCID iD: 0000-0001-9463-9187
Doctor of Biological Sciences, Head of the Laboratory of Molecular Hematology
Russian Federation, 125167, MoscowFelix P. Filatov
I. Mechnikov Research Institute of Vaccines and Sera
Email: memindisha@gmail.com
ORCID iD: 0000-0001-6182-2241
PhD in Medicine, Doctor of Biological Sciences, Researcher in Laboratory of Molecular Biotechnology
Russian Federation, 105064, MoscowTatiana A. Tupoleva
National Medical Research Center for Hematology of the Ministry of Health of Russia
Email: memindisha@gmail.com
ORCID iD: 0000-0003-4668-9379
ResearcherId: P-7607-2014
Doctor of Medical Sciences, Head of the Virology Department, Head of the Department ‒ Virologist of the Infectious Transfusion Safety Department
Russian Federation, 125167, MoscowReferences
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