nCoV: Serological detection of past SARS-CoV-2 infection by non-invasive sampling for field epidemiology and quantitative antibody detection

Lead Research Organisation: Imperial College London

Abstract

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Publications

10 25 50

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Garson JA (2022) Highly sensitive and specific detection of the SARS-CoV-2 Delta variant by double-mismatch allele-specific real time reverse transcription PCR. in Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology

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Turner-Stokes T (2021) Serologic Screening for Coronavirus Disease 2019 in Patients With Glomerular Disease. in Kidney international reports

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Tedder RS (2021) Appropriate selection of convalescent plasma donors for COVID-19. in The Lancet. Infectious diseases

 
Title HYBRID DOUBLE ANTIGEN SARS-COV-2 ANTIBODY DETECTION ASSAY 
Description The present invention is directed to a method for detecting the presence or absence of SARS-Cov-2 antibodies in a sample, the method comprising: a. contacting the sample with a solid-phase support having a fusion protein immobilised thereto, said fusion protein comprising a first antigen and a scaffold polypeptide, 1. wherein the first antigen is a SARS-Cov-2 receptor binding domain polypeptide that binds anti-SARS-Cov-2 antibody, and ii. wherein the scaffold polypeptide immobilises the fusion protein to the solid-phase support and presents the first antigen away from the solid-phase support; b. allowing SARS-Cov-2 antibodies present in the sample to bind to the first antigen, thereby forming a complex of first antigen and SARS-Cov-2 antibody; c. contacting said complex with a labelled second antigen, wherein said labelled second antigen comprises a SARS-Cov-2 receptor binding domain polypeptide that binds SARS-Cov-2 antibody; d. allowing said labelled second antigen to bind to SARS-Cov-2 antibody present in the sample; e. removing labelled second antigen that is not bound to said complex; and f. detecting the presence of labelled second antigen bound to said complex; wherein the presence of labelled complex indicates the presence of SARS-Cov-2 antibody in the sample, and wherein the absence of labelled complex indicates the absence of SARS-Cov-2 antibody in the sample. 
IP Reference WO2022013574 
Protection Patent application published
Year Protection Granted 2022
Licensed No
Impact highest specificity and sensitivity, also predicts and measures neutralising antibody