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Inherited Ifnar1 Deficiency in a Child With Both Critical Covid-19 Pneumonia and Multisystem Inflammatory Syndrome Publisher Pubmed



Abolhassani H1, 2 ; Landegren N3, 4 ; Bastard P5, 6, 7 ; Materna M6, 7 ; Modaresi M8 ; Du L1 ; Arandaguillen M3 ; Sardh F3, 4 ; Zuo F1 ; Zhang P5 ; Marcotte H9 ; Marr N10, 11 ; Khan T10 ; Ata M10 Show All Authors
Authors
  1. Abolhassani H1, 2
  2. Landegren N3, 4
  3. Bastard P5, 6, 7
  4. Materna M6, 7
  5. Modaresi M8
  6. Du L1
  7. Arandaguillen M3
  8. Sardh F3, 4
  9. Zuo F1
  10. Zhang P5
  11. Marcotte H9
  12. Marr N10, 11
  13. Khan T10
  14. Ata M10
  15. Alali F10
  16. Pescarmona R12, 13
  17. Belot A12, 14, 15
  18. Beziat V6, 7
  19. Zhang Q5, 6
  20. Casanova JL5, 6, 7, 16
  21. Kampe O4, 17
  22. Zhang SY5, 6, 7
  23. Hammarstrom L1
  24. Panhammarstrom Q1
Show Affiliations
Authors Affiliations
  1. 1. Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge Stockholm, 14183, Sweden
  2. 2. Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children’s Medical Center, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
  4. 4. Centre for Molecular Medicine, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
  5. 5. St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY, United States
  6. 6. Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de La Sante Et de La Recherche Medicale U1163, Necker Hospital for Sick Children, Paris, France
  7. 7. University of Paris, Imagine Institute, Paris, France
  8. 8. Division of Pediatrics Pulmonary Disease, Children’s Medical Center, Pediatrics Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran
  9. 9. Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
  10. 10. Department of Human Immunology, Sidra Medicine, Doha, Qatar
  11. 11. College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
  12. 12. Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Universite Claude Bernard, Lyon 1, Centre National de La Recherche Scientifique, UMR5308, ENS de Lyon, Lyon, France
  13. 13. Laboratoire d’immunologie, Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Pierre-Benite, France
  14. 14. Paediatric Nephrology, Rheumatology, Dermatology, Hopital Femme, Mere Enfant, Hospices Civils de Lyon, Bron, France
  15. 15. National Reference Centre for Rheumatic and Autoimmune and Systemic Diseases in Children (RAISE), Lyon, France
  16. 16. Howard Hughes Medical Institute, New York, NY, United States
  17. 17. Department of Endocrinology, Metabolism and Diabetes, Karolinska University Hospital, Stockholm, Sweden

Source: Journal of Clinical Immunology Published:2022


Abstract

Background: Inborn errors of immunity (IEI) and autoantibodies to type I interferons (IFNs) underlie critical COVID-19 pneumonia in at least 15% of the patients, while the causes of multisystem inflammatory syndrome in children (MIS-C) remain elusive. Objectives: To detect causal genetic variants in very rare cases with concomitant critical COVID-19 pneumonia and MIS-C. Methods: Whole exome sequencing was performed, and the impact of candidate gene variants was investigated. Plasma levels of cytokines, specific antibodies against the virus, and autoantibodies against type I IFNs were also measured. Results: We report a 3-year-old child who died on day 56 of SARS-CoV-2 infection with an unusual clinical presentation, combining both critical COVID-19 pneumonia and MIS-C. We identified a large, homozygous loss-of-function deletion in IFNAR1, underlying autosomal recessive IFNAR1 deficiency. Conclusions: Our findings confirm that impaired type I IFN immunity can underlie critical COVID-19 pneumonia, while suggesting that it can also unexpectedly underlie concomitant MIS-C. Our report further raises the possibility that inherited or acquired dysregulation of type I IFN immunity might contribute to MIS-C in other patients. © 2022, The Author(s).
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