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Effect of monoclonal antibody therapy on the endogenous SARS-CoV-2 antibody response. | LitMetric

Effect of monoclonal antibody therapy on the endogenous SARS-CoV-2 antibody response.

Clin Immunol

Pathology and Laboratory Medicine Service, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, MI 48105, USA; Department of Pathology, University of Michigan Medical School, Ann Arbor, MI 48109, USA. Electronic address:

Published: March 2022

AI Article Synopsis

Article Abstract

Monoclonal antibody treatment of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection has been widely implemented. Effects of treatment on the endogenous primary humoral response to the virus are unknown. A retrospective cohort study performed at a Veterans Health Administration medical center compared serologic responses of treated and untreated COVID-19 patients at high risk for severe outcomes. Three anti-viral spike protein IgG monoclonal treatments were used during the study period, 1) bamlanivimab, 2) casirivimab with imdevimab, and 3) bamlanivimab with etesevimab. Data were analyzed at acute (0-9 days), seroconversion (10-19 days), and maximum antibody (20-39 days) stages. SARS-Cov-2 infection induced a dynamic primary humoral response with anti-spike IgM and anti-nucleocapsid IgG seroconversion occurring after 9 days with maximum serologic indices achieved by 20-39 days. All monoclonal antibody treatments suppressed the endogenous anti-spike IgM response by 85-90% with minor effect on the anti-nucleocapsid response. Thus, passive immunization therapy may cause immunologic interference.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8866167PMC
http://dx.doi.org/10.1016/j.clim.2022.108959DOI Listing

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