Frontiers in Immunology (Dec 2021)

Evidence of SARS-CoV-2-Specific T-Cell-Mediated Myocarditis in a MIS-A Case

  • Kevin M. Vannella,
  • Kevin M. Vannella,
  • Cihan Oguz,
  • Cihan Oguz,
  • Sydney R. Stein,
  • Sydney R. Stein,
  • Stefania Pittaluga,
  • Esra Dikoglu,
  • Arjun Kanwal,
  • Sabrina C. Ramelli,
  • Thomas Briese,
  • Ling Su,
  • Xiaolin Wu,
  • Marcos J. Ramos-Benitez,
  • Marcos J. Ramos-Benitez,
  • Marcos J. Ramos-Benitez,
  • Luis J. Perez-Valencia,
  • Luis J. Perez-Valencia,
  • Ashley Babyak,
  • Ashley Babyak,
  • Nu Ri Cha,
  • Joon-Yong Chung,
  • Kris Ylaya,
  • Ronson J. Madathil,
  • Kapil K. Saharia,
  • Thomas M. Scalea,
  • Quincy K. Tran,
  • Daniel L. Herr,
  • David E. Kleiner,
  • Stephen M. Hewitt,
  • Luigi D. Notarangelo,
  • Alison Grazioli,
  • Daniel S. Chertow,
  • Daniel S. Chertow

DOI
https://doi.org/10.3389/fimmu.2021.779026
Journal volume & issue
Vol. 12

Abstract

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A 26-year-old otherwise healthy man died of fulminant myocarditis. Nasopharyngeal specimens collected premortem tested negative for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Histopathological evaluation of the heart showed myocardial necrosis surrounded by cytotoxic T-cells and tissue-repair macrophages. Myocardial T-cell receptor (TCR) sequencing revealed hyper-dominant clones with highly similar sequences to TCRs that are specific for SARS-CoV-2 epitopes. SARS-CoV-2 RNA was detected in the gut, supporting a diagnosis of multisystem inflammatory syndrome in adults (MIS-A). Molecular targets of MIS-associated inflammation are not known. Our data indicate that SARS-CoV-2 antigens selected high-frequency T-cell clones that mediated fatal myocarditis.

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