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Open Access 01-08-2024 | Humoral Immunodeficiency | Research

Evaluation of Frequency of CMV Replication and Disease Complications Reveals New Cellular Defects and a Time Dependent Pattern in CVID Patients

Authors: Luca Marri, Paola Contini, Federico Ivaldi, Chiara Schiavi, Ottavia Magnani, Chiara Vassallo, Andrea Guastalla, Noemi Traversone, Claudia Angelini, Genny Del Zotto, Andrea De Maria, Raffaele De Palma

Published in: Journal of Clinical Immunology | Issue 6/2024

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Abstract

Purpose

Common Variable Immunodeficiency (CVID) is characterized by hypogammaglobulinemia and failure of specific antibody production due to B-cell defects. However, studies have documented various T-cell abnormalities, potentially linked to viral complications. The frequency of Cytomegalovirus (CMV) replication in CVID cohorts is poorly studied. To address this gap in knowledge, we set up an observational study with the objectives of identifying CVID patients with active viraemia (CMV, Epstein-Barr virus (EBV)), evaluating potential correlations with immunophenotypic characteristics, clinical outcome, and the dynamic progression of clinical phenotypes over time.

Methods

31 CVID patients were retrospectively analysed according to viraemia, clinical and immunologic characteristics. 21 patients with non CVID humoral immunodeficiency were also evaluated as control.

Results

Active viral replication of CMV and/or EBV was observed in 25% of all patients. CMV replication was detected only in CVID patients (16%). CVID patients with active viral replication showed reduced HLA-DR+ NK counts when compared with CMV-DNA negative CVID patients. Viraemic patients had lower counts of LINDNAMbright and LINCD16+ inflammatory lymphoid precursors which correlated with NK-cell subsets. Analysis of the dynamic progression of CVID clinical phenotypes over time, showed that the initial infectious phenotype progressed to complicated phenotypes with time. All CMV viraemic patients had complicated disease.

Conclusion

Taken together, an impaired production of inflammatory precursors and NK activation is present in CVID patients with active viraemia. Since “Complicated” CVID occurs as a function of disease duration, there is need for an accurate evaluation of this aspect to improve classification and clinical management of CVID patients.
Appendix
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Literature
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Metadata
Title
Evaluation of Frequency of CMV Replication and Disease Complications Reveals New Cellular Defects and a Time Dependent Pattern in CVID Patients
Authors
Luca Marri
Paola Contini
Federico Ivaldi
Chiara Schiavi
Ottavia Magnani
Chiara Vassallo
Andrea Guastalla
Noemi Traversone
Claudia Angelini
Genny Del Zotto
Andrea De Maria
Raffaele De Palma
Publication date
01-08-2024
Publisher
Springer US
Published in
Journal of Clinical Immunology / Issue 6/2024
Print ISSN: 0271-9142
Electronic ISSN: 1573-2592
DOI
https://doi.org/10.1007/s10875-024-01744-3

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