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Humans with inherited MyD88 and IRAK-4 deficiencies are predisposed to hypoxemic COVID-19 pneumonia

  • ESID Registry Working Party
  • Laboratory of Molecular Oncology, Hospital Sant Joan de Déu, Fundación Sant Joan de Déu, Barcelona, Spain
  • IdiPAZ Institute for Health Research
  • Scottish Renal Registry, Meridian Court, Glasgow, UK; and Division of Population Health and Genomics, University of Dundee, Dundee, UK
  • Rockefeller University
  • Spain CIBER de Enfermedades Respiratorias, Universidad Europea, Madrid, Spain.
  • University Hospital of Gran Canaria Dr. Negrín
  • University and University Hospital Würzburg
  • Laboratory for Inborn Errors of Immunity
  • Drexel University College of Medicine
  • SUNY Upstate Medical University
  • Complejo Hospitalario Universitario Insular-Materno Infantil
  • Hospital Virgen de las Nieves-IBS
  • Alicante University General Hospital Doctor Balmis
  • Federico II University, Italy
  • Ibn Rushd University Hospital
  • Faculty of Medicine, University of British Columbia School of Medicine, Vancouver, British Columbia, Canada
  • Clinic for Children and Adolescents. Dept. of Hematology and Oncology. University Clinic Erlangen
  • Department of Ophthalmology, Ghent University and Ghent University Hospital, Ghent, Belgium.
  • University Hospital and Research Institute of Marqués de Valdecilla (IDIVAL)
  • Hospital Materno Infantil Torrecárdenas
  • Department of Economics, University of Zurich, Zurich, Switzerland.
  • BC Children’s Hospital, University of British Columbia, Vancouver CA, dept pediatrics
  • University Hospital of Jaén
  • Study Group for Immune Dysfunction Diseases in Children
  • Hospital Pequeno Príncipe
  • Department of Clinical Sciences, University Fernando Pessoa Canarias, Las Palmas de Gran Canaria, Las Palmas, Spain
  • Necker Hospital for Sick Children
  • University Fernando Pessoa Canarias

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

X-linked recessive deficiency of TLR7, a MyD88- and IRAK-4-dependent endosomal ssRNA sensor, impairs SARS-CoV-2 recognition and type I IFN production in plasmacytoid dendritic cells (pDCs), thereby underlying hypoxemic COVID-19 pneumonia with high penetrance. We report 22 unvaccinated patients with autosomal recessive MyD88 or IRAK-4 deficiency infected with SARS-CoV-2 (mean age: 10.9 yr; 2 mo to 24 yr), originating from 17 kindreds from eight countries on three continents. 16 patients were hospitalized: six with moderate, four with severe, and six with critical pneumonia, one of whom died. The risk of hypoxemic pneumonia increased with age. The risk of invasive mechanical ventilation was also much greater than in age-matched controls from the general population (OR: 74.7, 95% CI: 26.8-207.8, P < 0.001). The patients' susceptibility to SARS-CoV-2 can be attributed to impaired TLR7-dependent type I IFN production by pDCs, which do not sense SARS-CoV-2 correctly. Patients with inherited MyD88 or IRAK-4 deficiency were long thought to be selectively vulnerable to pyogenic bacteria, but also have a high risk of hypoxemic COVID-19 pneumonia.

Original languageEnglish
JournalJournal of experimental medicine
Volume220
Issue number5
DOIs
Publication statusPublished - 1 May 2023

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Child
  • Humans
  • Adaptor Proteins, Signal Transducing
  • COVID-19/complications
  • Myeloid Differentiation Factor 88/genetics
  • SARS-CoV-2
  • Toll-Like Receptor 7

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