2022
DOI: 10.1101/2022.01.27.22269944
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Persistently reduced humoral and cellular immune response following third SARS-CoV-2 mRNA vaccination in anti-CD20-treated multiple sclerosis patients

Abstract: Objective: To examine humoral and cellular response in multiple sclerosis patients on anti-CD20 therapy after third BNT162b2 mRNA SARS-CoV-2 vaccination. Methods A prospective longitudinal study design from first throughout third vaccination in Danish and American MS centers. All participants were treated with ocrelizumab. Antibody (Ab) levels were assessed before and after third vaccination using SARS-CoV-2 IgG II Quant assay (Abbott Laboratories). B- and T-lymphocytes enumeration was done with BD Multitest(T… Show more

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Cited by 3 publications
(4 citation statements)
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“…Furthermore, the preliminary evidence indicates significant decline in seropositivity rates of pwMS on aCD20 six months after their second dose 50,51 . Homologous mRNA boosters in pwMS on aCD20 promoted T-cell responses 52 , while humoral responses were still heavily dependent on the serostatus following the priming regimen, and B-cell dynamics at the time of booster administration 33,51-53 ; In other words, the booster doses did not promote humoral immunization in pwMS on aCD20 who did not seroconvert following priming vaccination, unless their B-cells were reconstituted.…”
Section: Resultsmentioning
confidence: 95%
See 1 more Smart Citation
“…Furthermore, the preliminary evidence indicates significant decline in seropositivity rates of pwMS on aCD20 six months after their second dose 50,51 . Homologous mRNA boosters in pwMS on aCD20 promoted T-cell responses 52 , while humoral responses were still heavily dependent on the serostatus following the priming regimen, and B-cell dynamics at the time of booster administration 33,51-53 ; In other words, the booster doses did not promote humoral immunization in pwMS on aCD20 who did not seroconvert following priming vaccination, unless their B-cells were reconstituted.…”
Section: Resultsmentioning
confidence: 95%
“…Furthermore, the preliminary evidence indicates significant decline in seropositivity rates of pwMS on aCD20 six months after their second dose 50,51 . Homologous mRNA boosters in pwMS on aCD20…”
Section: Indicated Positive Adaptive T-cell Responses Among 100%mentioning
confidence: 93%
“…Furthermore, the preliminary evidence indicates significant decline in seropositivity rates of pwMS on aCD20 6 months after their second dose 44 45. Homologous mRNA boosters in pwMS on aCD20 promoted T-cell responses,46 while humoral responses were still heavily dependent on the serostatus following the first vaccination cycle, and the B-cell dynamics at the time of booster administration 27 45–47…”
Section: Resultsmentioning
confidence: 99%
“…Although not all individuals on anti-CD20 therapies developed T cell responses, it further appears that T cell responses and antibody titres are not well correlated, and so a lack of antibody response is not in itself indicative of a failed response to vaccination (27). Additionally, data on the effect of a third vaccine dose on both antibody levels and T cell responses are mixed; some studies suggest no effect of additional vaccination on either humoral or cellular immune responses (28), whereas others find boosted responses (29,30).…”
Section: Introductionmentioning
confidence: 99%