Influence of Splenomegaly and Splenectomy on the Immune Cell Profile of Patients with Common Variable Immunodeficiency Disease

Overview

Journal J Clin Immunol

Publisher Springer

Specialty Allergy & Immunology

Date 2024 Jan 17

PMID 38231432

Authors

Jean-Francois Viallard

Marie Parrens

Patrick Blanco

Jean-Francois Moreau

Eric Oksenhendler

Claire Fieschi

Affiliations

Soon will be listed here.

Abstract

Purpose: About 25% of patients with common variable immunodeficiency disease (CVID) have splenomegaly, necessitating sometimes splenectomy whom consequences on the immunological profile of CVID patients have never been studied. We analyzed 11 CVID patients' comprehensive blood immune cell phenotypes pre- and post-splenectomy.

Methods: Flow cytometry analyses of immune cell populations.

Results: Among 89 CVID cohort patients, 41 with splenomegaly, splenomegaly was strongly associated with granulomatous disease, autoimmune disorders, lymphoid hyperplasia, and/or portal hypertension. CVID patients with splenomegaly have significant peripheral lymphopenia (p = 0.001), and significantly fewer peripheral class-switched memory B cells (smBs) (p = 0.001), CD4 T lymphocytes (p = 0.001), NK (p = 0.0001) and dendritic cells (p ≤ 0.01), and significantly more circulating CD4 and CD8 (p = 0.00001) T cell subset activation (p = 0.00005), than CVID patients without splenomegaly. Examination of splenectomy impact on circulating lymphocyte subset distributions demonstrated the drastically enhanced total circulating lymphocyte count post-splenectomy, predominantly B lymphocytes and CD8 T cells. However, splenectomy did not change B cell distribution, with smBs remaining persistently low, in contrast to complete inversion of the circulating T cell composition, with reversal of the CD4/CD8 ratio suggesting that amplification of the CD8 T cell compartment is a CVID characteristic in patients with splenomegaly. Our results highlight this CD8 amplification in CVID-splenomegaly patients that might be explained by a homing effect to the spleen and/or possible chronic virus replication, which in turn could induce T cell expansions.

Conclusion: Splenectomizing CVID patients with splenomegaly restores the absolute circulating lymphocyte count, suggesting that the decreased T cell count in the presence of splenomegaly cannot be used as an exclusive criterion for combined immunodeficiency.

Citing Articles

Possible Role of Cytomegalovirus in Gastric Cancer Development and Recurrent Macrolide-Resistant Infection in Common Variable Immunodeficiency: A Case Report and Literature Discussion.

Diaz-Alberola I, Espuch-Oliver A, Fernandez-Segovia F, Lopez-Nevot M Microorganisms. 2024; 12(6).

PMID: 38930460 PMC: 11205354. DOI: 10.3390/microorganisms12061078.

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