Torque teno virus viral load predicts SARS‐CoV‐2 vaccine response in kidney transplant recipients
Abstract Transplant recipients display poor responses to SARS‐CoV‐2 mRNA vaccines. In this retrospective study, we investigate torque teno virus (TTV) viral load (VL), a ubiquitous virus reflecting global immune response levels, as a predictive factor of vaccine response in kidney transplant recipients (KTR). Four hundred and fifty‐nine KTR having received two SARS‐CoV‐2 mRNA vaccine doses were enrolled, and 241 of them subsequently received a third vaccine dose. Antireceptor‐binding domain (RBD) IgG response was assessed after each vaccine dose and TTV VL was measured in pre‐vaccine samples. Prevaccine TTV VL > 6.2 log10 copies (cp)/mL was independently associated with nonresponse to two doses (odds ratio (OR) = 6.17, 95% confidence interval (CI95) = 2.42–15.78) as well as to three doses (OR = 3.62, 95% CI95 = 1.55–8.49). In nonresponders to the second dose, high TTV VL in prevaccine samples or measured before the third dose were equally predictive of lower seroconversion rates and antibody titers. High TTV VL before and during SARS‐CoV‐2 vaccination schedules are predictive of poor vaccine response in KTR. This biomarker should be further evaluated regarding other vaccine responses..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:95 |
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| Enthalten in: |
Journal of Medical Virology - 95(2023), 7 |
| Beteiligte Personen: |
Solis, Morgane [VerfasserIn] |
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| Anmerkungen: |
© 2023 Wiley Periodicals LLC. |
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| Umfang: |
9 |
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| doi: |
10.1002/jmv.28936 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Abstract Transplant recipients display poor responses to SARS‐CoV‐2 mRNA vaccines. In this retrospective study, we investigate torque teno virus (TTV) viral load (VL), a ubiquitous virus reflecting global immune response levels, as a predictive factor of vaccine response in kidney transplant recipients (KTR). Four hundred and fifty‐nine KTR having received two SARS‐CoV‐2 mRNA vaccine doses were enrolled, and 241 of them subsequently received a third vaccine dose. Antireceptor‐binding domain (RBD) IgG response was assessed after each vaccine dose and TTV VL was measured in pre‐vaccine samples. Prevaccine TTV VL > 6.2 log10 copies (cp)/mL was independently associated with nonresponse to two doses (odds ratio (OR) = 6.17, 95% confidence interval (CI95) = 2.42–15.78) as well as to three doses (OR = 3.62, 95% CI95 = 1.55–8.49). In nonresponders to the second dose, high TTV VL in prevaccine samples or measured before the third dose were equally predictive of lower seroconversion rates and antibody titers. High TTV VL before and during SARS‐CoV‐2 vaccination schedules are predictive of poor vaccine response in KTR. This biomarker should be further evaluated regarding other vaccine responses. | ||
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