Frontiers in Immunology (Jul 2021)

Individual HLA-A, -B, -C, and -DRB1 Genotypes Are No Major Factors Which Determine COVID-19 Severity

  • Johannes Schetelig,
  • Johannes Schetelig,
  • Falk Heidenreich,
  • Falk Heidenreich,
  • Henning Baldauf,
  • Sarah Trost,
  • Bose Falk,
  • Christian Hoßbach,
  • Ruben Real,
  • Axel Roers,
  • Dirk Lindemann,
  • Alexander Dalpke,
  • Martin Kolditz,
  • Katja de With,
  • Martin Bornhäuser,
  • Ezio E. Bonifacio,
  • Elke Rücker-Braun,
  • Elke Rücker-Braun,
  • Vinzenz Lange,
  • Jan Markert,
  • Ralf Barth,
  • Jan A. Hofmann,
  • Jürgen Sauter,
  • Stefanie N. Bernas,
  • Alexander H. Schmidt,
  • Alexander H. Schmidt,
  • Alexander H. Schmidt

DOI
https://doi.org/10.3389/fimmu.2021.698193
Journal volume & issue
Vol. 12

Abstract

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HLA molecules are key restrictive elements to present intracellular antigens at the crossroads of an effective T-cell response against SARS-CoV-2. To determine the impact of the HLA genotype on the severity of SARS-CoV-2 courses, we investigated data from 6,919 infected individuals. HLA-A, -B, and -DRB1 allotypes grouped into HLA supertypes by functional or predicted structural similarities of the peptide-binding grooves did not predict COVID-19 severity. Further, we did not observe a heterozygote advantage or a benefit from HLA diplotypes with more divergent physicochemical peptide-binding properties. Finally, numbers of in silico predicted viral T-cell epitopes did not correlate with the severity of SARS-CoV-2 infections. These findings suggest that the HLA genotype is no major factor determining COVID-19 severity. Moreover, our data suggest that the spike glycoprotein alone may allow for abundant T-cell epitopes to mount robust T-cell responses not limited by the HLA genotype.

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