Autoantibodies Neutralizing Type III Interferons Are Uncommon in Patients with Severe Coronavirus Disease 2019 Pneumonia

  • Martti Vanker
  • , Karita Särekannu
  • , Arnaud Fekkar
  • , Sofie Eg Jørgensen
  • , Liis Haljasmägi
  • , Anne Kallaste
  • , Kai Kisand
  • , Margus Lember
  • , Pärt Peterson
  • , Madhvi Menon
  • , Tracy Hussell
  • , Sean Knight
  • , James Moore-Stanley
  • , Paul Bastard
  • , Shen Ying Zhang
  • , Trine H. Mogensen
  • , Quentin Philippot
  • , Qian Zhang
  • , Anne Puel
  • , Jean Laurent Casanova
  • Kai Kisand

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

15 Citations (Scopus)
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Abstract

Autoantibodies (AABs) neutralizing type I interferons (IFN) underlie about 15% of cases of critical coronavirus disease 2019 (COVID-19) pneumonia. The impact of autoimmunity toward type III IFNs remains unexplored. We included samples from 1,002 patients with COVID-19 (50% with severe disease) and 1,489 SARS-CoV-2-naive individuals. We studied the prevalence and neutralizing capacity of AABs toward IFNλ and IFNα. Luciferase-based immunoprecipitation method was applied using pooled IFNα (subtypes 1, 2, 8, and 21) or pooled IFNλ1-IFNλ3 as antigens, followed by reporter cell-based neutralization assay. In the SARS-CoV-2-naive cohort, IFNλ AABs were more common (8.5%) than those targeting IFNα2 (2.9%) and were related with older age. In the COVID-19 cohort the presence of autoreactivity to IFNλ did not associate with severe disease [odds ratio (OR) 0.84; 95% confidence interval (CI) 0.40-1.73], unlike to IFNα (OR 4.88; 95% CI 2.40-11.06; P < 0.001). Most IFNλ AAB-positive COVID-19 samples (67%) did not neutralize any of the 3 IFNλ subtypes. Pan-IFNλ neutralization occurred in 5 patients (0.50%), who all suffered from severe COVID-19 pneumonia, and 4 of them neutralized IFNα2 in addition to IFNλ. Overall, AABs to type III IFNs are rarely neutralizing, and do not seem to predispose to severe COVID-19 pneumonia on their own.

Original languageEnglish
JournalJournal of Interferon & Cytokine Research
Volume43
Issue9
Pages (from-to)379-393
Number of pages15
ISSN1079-9907
DOIs
Publication statusPublished - 1 Sept 2023

Keywords

  • autoantibodies
  • COVID-19
  • type I interferons
  • type III interferons

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