Monoclonal antibody-mediated neutralization of SARS-CoV-2 in an IRF9-deficient child.
Proc Natl Acad Sci U S A
; 118(45)2021 11 09.
Article
em En
| MEDLINE
| ID: mdl-34702736
We describe an unvaccinated child at risk for life-threatening COVID-19 due to an inherited deficiency of IRF9, which governs ISGF-3-dependent responses to type I and III interferons (IFN). She was admitted, with a high nasal SARS-CoV-2 load on day 1 of upper respiratory tract infection. She was viremic on day 2 and received casirivimab and imdevimab. Her clinical manifestations and viremia disappeared on days 3 and 4, respectively. Circulating SARS-CoV-2 virus induced the expression of IFN-stimulated genes in leukocytes on day 1, whereas the secretion of blood type I IFNs, which peaked on day 4, did not. Antibody-mediated SARS-CoV-2 neutralization is, therefore, sufficient to overcome a deficiency of antiviral IFNs.
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Base de dados:
MEDLINE
Assunto principal:
Fator Gênico 3 Estimulado por Interferon, Subunidade gama
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Anticorpos Monoclonais Humanizados
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SARS-CoV-2
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COVID-19
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
França