Neutralizing antibody response against the B.1.617.2 (delta) and the B.1.1.529 (omicron) variants after a third mRNA SARS-CoV-2 vaccine dose in kidney transplant recipients.
clinical decision-making
clinical research
immune modulation
immunosuppression
kidney transplantation
nephrology
practice
solid organ transplantation
vaccine
Journal
American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons
ISSN: 1600-6143
Titre abrégé: Am J Transplant
Pays: United States
ID NLM: 100968638
Informations de publication
Date de publication:
07 2022
07 2022
Historique:
revised:
24
03
2022
received:
04
02
2022
accepted:
01
04
2022
pubmed:
7
4
2022
medline:
7
7
2022
entrez:
6
4
2022
Statut:
ppublish
Résumé
Seroconversion after COVID-19 vaccination is impaired in kidney transplant recipients. Emerging variants of concern such as the B.1.617.2 (delta) and the B.1.1.529 (omicron) variants pose an increasing threat to these patients. In this observational cohort study, we measured anti-S1 IgG, surrogate neutralizing, and anti-receptor-binding domain antibodies three weeks after a third mRNA vaccine dose in 49 kidney transplant recipients and compared results to 25 age-matched healthy controls. In addition, vaccine-induced neutralization of SARS-CoV-2 wild-type, the B.1.617.2 (delta), and the B.1.1.529 (omicron) variants was assessed using a live-virus assay. After a third vaccine dose, anti-S1 IgG, surrogate neutralizing, and anti-receptor-binding domain antibodies were significantly lower in kidney transplant recipients compared to healthy controls. Only 29/49 (59%) sera of kidney transplant recipients contained neutralizing antibodies against the SARS-CoV-2 wild-type or the B.1.617.2 (delta) variant and neutralization titers were significantly reduced compared to healthy controls (p < 0.001). Vaccine-induced cross-neutralization of the B.1.1.529 (omicron) variants was detectable in 15/35 (43%) kidney transplant recipients with seropositivity for anti-S1 IgG, surrogate neutralizing, and/or anti-RBD antibodies. Neutralization of the B.1.1.529 (omicron) variants was significantly reduced compared to neutralization of SARS-CoV-2 wild-type or the B.1.617.2 (delta) variant for both, kidney transplant recipients and healthy controls (p < .001 for all).
Identifiants
pubmed: 35384272
doi: 10.1111/ajt.17054
pmc: PMC9111366
pii: S1600-6135(22)08276-4
doi:
Substances chimiques
Antibodies, Neutralizing
0
Antibodies, Viral
0
COVID-19 Vaccines
0
Immunoglobulin G
0
RNA, Messenger
0
Vaccines, Synthetic
0
Viral Envelope Proteins
0
mRNA Vaccines
0
Types de publication
Journal Article
Observational Study
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1873-1883Informations de copyright
© 2022 The Authors. American Journal of Transplantation published by Wiley Periodicals LLC on behalf of The American Society of Transplantation and the American Society of Transplant Surgeons.
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