Impact of Omicron BA.1 infection on BA.4/5 immunity in transplant recipients
Copyright © 2022 American Society of Transplantation & American Society of Transplant Surgeons. Published by Elsevier Inc. All rights reserved..
Mutations in the spike protein of SARS-CoV-2 have allowed Omicron subvariants to escape neutralizing antibodies. The degree to which this occurs in transplant recipients is poorly understood. We measured BA.4/5 cross-neutralizing responses in 75 mostly vaccinated transplant recipients who recovered from BA.1 infection. Sera were collected at 1 and 6 months post-BA.1 infection, and a lentivirus pseudovirus neutralization assay was performed using spike constructs corresponding to BA.1 and BA.4/5. Uninfected immunized transplant recipients and health care worker controls were used for comparison. Following BA.1 infection, the proportion of transplant recipients with neutralizing antibody responses was 88.0% (66/75) against BA.1 and 69.3% (52/75) against BA.4/5 (P = .005). The neutralization level against BA.4/5 was approximately 17-fold lower than that against BA.1 (IQR 10.6- to 45.1-fold lower, P < .0001). BA.4/5 responses declined over time and by ≥0.5 log10 (approximately 3-fold) in almost half of the patients by 6 months. BA.4/5-neutralizing antibody titers in transplant recipients with breakthrough BA.1 infection were similar to those in immunized health care workers but significantly lower than those in uninfected triple-vaccinated transplant recipients. These results provide evidence that transplant recipients are at ongoing risk for BA.4/5 infection despite vaccination and prior Omicron strain infection, and additional mitigation strategies may be required to prevent severe disease in this cohort.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2023 |
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Erschienen: |
2023 |
Enthalten in: |
Zur Gesamtaufnahme - volume:23 |
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Enthalten in: |
American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons - 23(2023), 2 vom: 15. Feb., Seite 278-283 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Ferreira, Victor H [VerfasserIn] |
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Links: |
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Anmerkungen: |
Date Completed 23.02.2023 Date Revised 03.04.2023 published: Print-Electronic Citation Status MEDLINE |
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doi: |
10.1016/j.ajt.2022.10.004 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM352546107 |
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245 | 1 | 0 | |a Impact of Omicron BA.1 infection on BA.4/5 immunity in transplant recipients |
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520 | |a Copyright © 2022 American Society of Transplantation & American Society of Transplant Surgeons. Published by Elsevier Inc. All rights reserved. | ||
520 | |a Mutations in the spike protein of SARS-CoV-2 have allowed Omicron subvariants to escape neutralizing antibodies. The degree to which this occurs in transplant recipients is poorly understood. We measured BA.4/5 cross-neutralizing responses in 75 mostly vaccinated transplant recipients who recovered from BA.1 infection. Sera were collected at 1 and 6 months post-BA.1 infection, and a lentivirus pseudovirus neutralization assay was performed using spike constructs corresponding to BA.1 and BA.4/5. Uninfected immunized transplant recipients and health care worker controls were used for comparison. Following BA.1 infection, the proportion of transplant recipients with neutralizing antibody responses was 88.0% (66/75) against BA.1 and 69.3% (52/75) against BA.4/5 (P = .005). The neutralization level against BA.4/5 was approximately 17-fold lower than that against BA.1 (IQR 10.6- to 45.1-fold lower, P < .0001). BA.4/5 responses declined over time and by ≥0.5 log10 (approximately 3-fold) in almost half of the patients by 6 months. BA.4/5-neutralizing antibody titers in transplant recipients with breakthrough BA.1 infection were similar to those in immunized health care workers but significantly lower than those in uninfected triple-vaccinated transplant recipients. These results provide evidence that transplant recipients are at ongoing risk for BA.4/5 infection despite vaccination and prior Omicron strain infection, and additional mitigation strategies may be required to prevent severe disease in this cohort | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Research Support, Non-U.S. Gov't | |
650 | 4 | |a clinical research/practice | |
650 | 4 | |a complication: infectious, infection, and infectious agents – viral: SARS-CoV-2/COVID-19 | |
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700 | 1 | |a Hu, Queenie |e verfasserin |4 aut | |
700 | 1 | |a Kurtesi, Alexandra |e verfasserin |4 aut | |
700 | 1 | |a Solera, Javier T |e verfasserin |4 aut | |
700 | 1 | |a Ierullo, Matthew |e verfasserin |4 aut | |
700 | 1 | |a Gingras, Anne-Claude |e verfasserin |4 aut | |
700 | 1 | |a Kumar, Deepali |e verfasserin |4 aut | |
700 | 1 | |a Humar, Atul |e verfasserin |4 aut | |
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