Background Since universal vaccinations represents the most effective strategy to mitigate coronavirus disease 2019 (COVID-19), baseline assessment and post-vaccine monitoring of anti-SARS-CoV-2 neutralizing antibodies are essential to vaccination programs. Therefore, this study aimed to compare data of five commercial anti-SARS-CoV2 immunoassays after administration of an mRNA vaccine. Methods Venous blood was collected from three healthcare workers, receiving a double (30 g) dose of BNT162b2 mRNA Covid-19 vaccine (Comirnaty, Pfizer), on the day of the first vaccine dose and then at fixed intervals for the following 2 months. Anti-SARS-CoV-2 neutralizing antibody response was assayed with Roche Total Ig anti-RBD (receptor binding domain), DiaSorin TrimericS IgG (spike trimer), Beckman Coulter IgG anti-RBD, SNIBE IgG anti-RBD and Technogenetics IgG anti-N/S1. Results A total number of 45 samples were drawn at the end of the 2-month study period. The Spearman’s correlations of absolute anti-SARS-CoV-2 antibodies were always excellent (all p<0.001), comprised between 0.967-0.994. Satisfactory results were also observed when absolute antiSARS-CoV-2 antibodies values of the five methods were compared with the mean consensus value, with correlations always higher than 0.979 (all p<0.001). The agreement of anti-SARS-CoV-2 antibodies positivity versus the consensus median positivity ranged between 0.764 and 1.000 (always p<0.001), but become always >0.900 after readjustment of one assay cutoff. Conclusions All the immunoassays evaluated in this study appear suitable for monitoring anti-SARS-CoV-2 neutralizing antibodies response in subjects undergoing mRNA COVID-19 vaccination.
【저자키워드】 antibodies, immune response, BNT162b2 mRNA COVID-19 vaccine, immunoassays comparison, BNT162b2 mRNA Covid-19 vakcina, imuni odgovor, antitela, poređenje imunoodređivanja, 【초록키워드】 COVID-19, coronavirus disease, neutralizing antibody, IgG, Vaccine, vaccination, antibody, mRNA vaccine, anti-SARS-CoV-2, Receptor binding domain, vaccine dose, Pfizer, immunoassay, COVID-19 vaccination, anti-SARS-CoV-2 antibody, mRNA, healthcare, correlation, Roche, Neutralizing antibody response, administration, dose, anti-RBD, venous blood, Consensus, SNIBE, subject, DiaSorin, Baseline assessment, study period, Cutoff, Beckman Coulter, spike trimer, Post-vaccine, Spearman, mitigate, FIVE, effective, Result, evaluated, receiving, was collected, median, fixed, interval, the mean, Total, ranged, of BNT162b2, the immunoassay, 【제목키워드】 IgG, vaccination, anti-SARS-CoV-2, immunoassay, total antibody, BNT162b2 mRNA, FIVE,