Frontiers in Immunology (Nov 2023)

More rapid blood interferon α2 decline in fatal versus surviving COVID-19 patients

  • Candie Joly,
  • Delphine Desjardins,
  • Raphael Porcher,
  • Hélène Péré,
  • Thomas Bruneau,
  • Qian Zhang,
  • Qian Zhang,
  • Qian Zhang,
  • Paul Bastard,
  • Paul Bastard,
  • Paul Bastard,
  • Aurélie Cobat,
  • Aurélie Cobat,
  • Aurélie Cobat,
  • Léa Resmini,
  • Olivia Lenoir,
  • Laurent Savale,
  • Laurent Savale,
  • Camille Lécuroux,
  • Céline Verstuyft,
  • Anne-Marie Roque-Afonso,
  • Anne-Marie Roque-Afonso,
  • David Veyer,
  • David Veyer,
  • Gabriel Baron,
  • Matthieu Resche-Rigon,
  • Philippe Ravaud,
  • Jean-Laurent Casanova,
  • Jean-Laurent Casanova,
  • Jean-Laurent Casanova,
  • Jean-Laurent Casanova,
  • Roger Le Grand,
  • Olivier Hermine,
  • Olivier Hermine,
  • Pierre-Louis Tharaux,
  • Xavier Mariette,
  • Xavier Mariette

DOI
https://doi.org/10.3389/fimmu.2023.1250214
Journal volume & issue
Vol. 14

Abstract

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BackgroundThe clinical outcome of COVID-19 pneumonia is highly variable. Few biological predictive factors have been identified. Genetic and immunological studies suggest that type 1 interferons (IFN) are essential to control SARS-CoV-2 infection.ObjectiveTo study the link between change in blood IFN-α2 level and plasma SARS-Cov2 viral load over time and subsequent death in patients with severe and critical COVID-19.MethodsOne hundred and forty patients from the CORIMUNO-19 cohort hospitalized with severe or critical COVID-19 pneumonia, all requiring oxygen or ventilation, were prospectively studied. Blood IFN-α2 was evaluated using the Single Molecule Array technology. Anti-IFN-α2 auto-Abs were determined with a reporter luciferase activity. Plasma SARS-Cov2 viral load was measured using droplet digital PCR targeting the Nucleocapsid gene of the SARS-CoV-2 positive-strand RNA genome.ResultsAlthough the percentage of plasmacytoid dendritic cells was low, the blood IFN-α2 level was higher in patients than in healthy controls and was correlated to SARS-CoV-2 plasma viral load at entry. Neutralizing anti-IFN-α2 auto-antibodies were detected in 5% of patients, associated with a lower baseline level of blood IFN-α2. A longitudinal analysis found that a more rapid decline of blood IFN-α2 was observed in fatal versus surviving patients: mortality HR=3.15 (95% CI 1.14–8.66) in rapid versus slow decliners. Likewise, a high level of plasma SARS-CoV-2 RNA was associated with death risk in patients with severe COVID-19.ConclusionThese findings could suggest an interest in evaluating type 1 IFN treatment in patients with severe COVID-19 and type 1 IFN decline, eventually combined with anti-inflammatory drugs.Clinical trial registrationhttps://clinicaltrials.gov, identifiers NCT04324073, NCT04331808, NCT04341584.

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