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Nat Med ; 26(10): 1623-1635, 2020 10.
Article in English | MEDLINE | ID: covidwho-717130

ABSTRACT

Improved understanding and management of COVID-19, a potentially life-threatening disease, could greatly reduce the threat posed by its etiologic agent, SARS-CoV-2. Toward this end, we have identified a core peripheral blood immune signature across 63 hospital-treated patients with COVID-19 who were otherwise highly heterogeneous. The signature includes discrete changes in B and myelomonocytic cell composition, profoundly altered T cell phenotypes, selective cytokine/chemokine upregulation and SARS-CoV-2-specific antibodies. Some signature traits identify links with other settings of immunoprotection and immunopathology; others, including basophil and plasmacytoid dendritic cell depletion, correlate strongly with disease severity; while a third set of traits, including a triad of IP-10, interleukin-10 and interleukin-6, anticipate subsequent clinical progression. Hence, contingent upon independent validation in other COVID-19 cohorts, individual traits within this signature may collectively and individually guide treatment options; offer insights into COVID-19 pathogenesis; and aid early, risk-based patient stratification that is particularly beneficial in phasic diseases such as COVID-19.


Subject(s)
Antibodies, Viral/immunology , B-Lymphocytes/immunology , Coronavirus Infections/immunology , Cytokines/immunology , Dendritic Cells/immunology , Pneumonia, Viral/immunology , T-Lymphocytes/immunology , Aged , B-Lymphocyte Subsets/immunology , Basophils/immunology , Betacoronavirus , COVID-19 , Case-Control Studies , Cell Cycle , Chemokine CXCL10/immunology , Chemokines/immunology , Cohort Studies , Coronavirus Infections/blood , Disease Progression , Female , Flow Cytometry , Hospitalization , Humans , Immunologic Memory , Immunophenotyping , Interleukin-10/immunology , Interleukin-6/immunology , Leukocyte Count , Lymphocyte Activation/immunology , Male , Middle Aged , Pandemics , Pneumonia, Viral/blood , Prognosis , SARS-CoV-2 , Severity of Illness Index , T-Lymphocyte Subsets/immunology , Up-Regulation
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