Lost in Translation: Lack of CD4 Expression due to a Novel Genetic Defect

Abstract CD4 expression identifies a subset of mature T cells primarily assisting the germinal center reaction and contributing to CD8+ T-cell and B-cell activation, functions, and longevity. Herein, we present a family in which a novel variant disrupting the translation-initiation codon of the CD4...

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Veröffentlicht in:The Journal of infectious diseases 2021-02, Vol.223 (4), p.645-654
Hauptverfasser: Lisco, Andrea, Ye, Peiying, Wong, Chun-Shu, Pei, Luxin, Hsu, Amy P, Mace, Emily M, Orange, Jordan S, Lage, Silvia Lucena, Ward, Addison Jon, Migueles, Stephen A, Connors, Mark, Anderson, Megan V, Buckner, Clarisa M, Moir, Susan, Rupert, Adam, Dulau-Florea, Alina, Ogbogu, Princess, Timberlake, Dylan, Notarangelo, Luigi D, Pittaluga, Stefania, Abraham, Roshini S, Sereti, Irini
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Sprache:eng
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Zusammenfassung:Abstract CD4 expression identifies a subset of mature T cells primarily assisting the germinal center reaction and contributing to CD8+ T-cell and B-cell activation, functions, and longevity. Herein, we present a family in which a novel variant disrupting the translation-initiation codon of the CD4 gene resulted in complete loss of membrane and plasma soluble CD4 in peripheral blood, lymph node, bone marrow, skin, and ileum of a homozygous proband. This inherited CD4 knockout disease illustrates the clinical and immunological features of a complete deficiency of any functional component of CD4 and its similarities and differences with other clinical models of primary or acquired loss of CD4+ T cells. The first inherited loss of any functional component of CD4, including soluble-CD4, is clinically distinct from any other congenital or acquired CD4 T-cell defect and characterized by compensatory changes in T-cell subsets and functional impairment of B-cells, monocyte and NK-cells.
ISSN:0022-1899
1537-6613
DOI:10.1093/infdis/jiab025