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- Title
Low anti‐SARS‐CoV‐2 S antibody levels predict increased mortality and dissemination of viral components in the blood of critical COVID‐19 patients.
- Authors
Martin‐Vicente, María; Almansa, Raquel; Martínez, Isidoro; Tedim, Ana P.; Bustamante, Elena; Tamayo, Luis; Aldecoa, César; Gómez, José Manuel; Renedo, Gloria; Berezo, Jose Ángel; Cedeño, Jamil Antonio; Mamolar, Nuria; García Olivares, Pablo; Herrán‐Monge, Rubén; Cicuendez, Ramón; Enríquez, Pedro; Ortega, Alicia; Jorge, Noelia; Doncel, Cristina; de la Fuente, Amanda
- Abstract
Background: Anti‐SARS‐CoV‐2 S antibodies prevent viral replication. Critically ill COVID‐19 patients show viral material in plasma, associated with a dysregulated host response. If these antibodies influence survival and viral dissemination in ICU‐COVID patients is unknown. Patients/Methods: We studied the impact of anti‐SARS‐CoV‐2 S antibodies levels on survival, viral RNA‐load in plasma, and N‐antigenaemia in 92 COVID‐19 patients over ICU admission. Results: Frequency of N‐antigenaemia was >2.5‐fold higher in absence of antibodies. Antibodies correlated inversely with viral RNA‐load in plasma, representing a protective factor against mortality (adjusted HR [CI 95%], p): (S IgM [AUC ≥ 60]: 0.44 [0.22; 0.88], 0.020); (S IgG [AUC ≥ 237]: 0.31 [0.16; 0.61], <0.001). Viral RNA‐load in plasma and N‐antigenaemia predicted increased mortality: (N1‐viral load [≥2.156 copies/ml]: 2.25 [1.16; 4.36], 0.016); (N‐antigenaemia: 2.45 [1.27; 4.69], 0.007). Conclusions: Low anti‐SARS‐CoV‐2 S antibody levels predict mortality in critical COVID‐19. Our findings support that these antibodies contribute to prevent systemic dissemination of SARS‐CoV‐2.
- Subjects
COVID-19; VIRAL antibodies; IMMUNOGLOBULINS; MORTALITY; VIRAL replication
- Publication
Journal of Internal Medicine, 2022, Vol 291, Issue 2, p232
- ISSN
0954-6820
- Publication type
Article
- DOI
10.1111/joim.13386