Kinetics of antibody responses dictate COVID-19 outcome
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Abstract
Recent studies have provided insights into innate and adaptive immune dynamics in coronavirus disease 2019 (COVID-19). Yet, the exact feature of antibody responses that governs COVID-19 disease outcomes remain unclear. Here, we analysed humoral immune responses in 209 asymptomatic, mild, moderate and severe COVID-19 patients over time to probe the nature of antibody responses in disease severity and mortality. We observed a correlation between anti-Spike (S) IgG levels, length of hospitalization and clinical parameters associated with worse clinical progression. While high anti-S IgG levels correlated with worse disease severity, such correlation was time-dependent. Deceased patients did not have higher overall humoral response than live discharged patients. However, they mounted a robust, yet delayed response, measured by anti-S, anti-RBD IgG, and neutralizing antibody (NAb) levels, compared to survivors. Delayed seroconversion kinetics correlated with impaired viral control in deceased patients. Finally, while sera from 89% of patients displayed some neutralization capacity during their disease course, NAb generation prior to 14 days of disease onset emerged as a key factor for recovery. These data indicate that COVID-19 mortality does not correlate with the cross-sectional antiviral antibody levels per se , but rather with the delayed kinetics of NAb production.
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SciScore for 10.1101/2020.12.18.20248331: (What is this?)
Please note, not all rigor criteria are appropriate for all manuscripts.
Table 1: Rigor
Institutional Review Board Statement IRB: Ethics statement: This study was approved by Yale Human Research Protection Program Institutional Review Boards (FWA00002571, protocol ID 2000027690).
Consent: Informed consent was obtained from all enrolled patients and healthcare workers.Randomization not detected. Blinding Cytokines and flow cytometry analyses were blinded. Power Analysis not detected. Sex as a biological variable not detected. Cell Line Authentication Contamination: The cell line was obtained from the ATCC and has been tested negative for contamination with mycoplasma. Table 2: Resources
Antibodies Sentences Resources Plates were washed three times with PBS-T (PBS with 0.1% Tween-20) and 50 μl of … SciScore for 10.1101/2020.12.18.20248331: (What is this?)
Please note, not all rigor criteria are appropriate for all manuscripts.
Table 1: Rigor
Institutional Review Board Statement IRB: Ethics statement: This study was approved by Yale Human Research Protection Program Institutional Review Boards (FWA00002571, protocol ID 2000027690).
Consent: Informed consent was obtained from all enrolled patients and healthcare workers.Randomization not detected. Blinding Cytokines and flow cytometry analyses were blinded. Power Analysis not detected. Sex as a biological variable not detected. Cell Line Authentication Contamination: The cell line was obtained from the ATCC and has been tested negative for contamination with mycoplasma. Table 2: Resources
Antibodies Sentences Resources Plates were washed three times with PBS-T (PBS with 0.1% Tween-20) and 50 μl of HRP anti-Human IgG Antibody (GenScript #A00166, 1:5,000) or anti-Human IgM-Peroxidase anti-Human IgGsuggested: Noneanti-Human IgM-Peroxidasesuggested: NoneFlow cytometry: Antibody clones and vendors were as follows: BB515 anti-hHLA-DR (G46-6) (1:400 anti-hHLA-DR ( G46-6 )suggested: NoneExperimental Models: Cell Lines Sentences Resources Viral titers were measured by standard plaque assay using Vero E6 cells. Vero E6suggested: RRID:CVCL_XD71)Software and Algorithms Sentences Resources Ethics statement: This study was approved by Yale Human Research Protection Program Institutional Review Boards (FWA00002571, protocol ID 2000027690). Yale Human Research Protection Programsuggested: NoneThe clinical data were collected using EPIC EHR and REDCap 9.3.6 software. REDCapsuggested: (REDCap, RRID:SCR_003445)Data were analysed using FlowJo software version 10.6 software (Tree Star). FlowJosuggested: (FlowJo, RRID:SCR_008520)Statistical analysis: All analysis of patient samples was conducted using Matlab 2020a Matlabsuggested: (MATLAB, RRID:SCR_001622), GraphPad Prism 9, and JMP 15. GraphPadsuggested: (GraphPad Prism, RRID:SCR_002798)Results from OddPub: Thank you for sharing your data.
Results from LimitationRecognizer: An explicit section about the limitations of the techniques employed in this study was not found. We encourage authors to address study limitations.Results from TrialIdentifier: No clinical trial numbers were referenced.
Results from Barzooka: We did not find any issues relating to the usage of bar graphs.
Results from JetFighter: We did not find any issues relating to colormaps.
Results from rtransparent:- Thank you for including a conflict of interest statement. Authors are encouraged to include this statement when submitting to a journal.
- Thank you for including a funding statement. Authors are encouraged to include this statement when submitting to a journal.
- No protocol registration statement was detected.
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