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- W4304080308 abstract "Several health authorities recommend a third (booster) vaccination to protect patients with rheumatic and musculoskeletal diseases from severe COVID-19. Methotrexate has been shown to reduce the efficacy of the first and second dose of SARS-CoV-2 mRNA vaccines. So far, it remains unknown how concomitant methotrexate affects the efficacy of a COVID-19 booster vaccination.We compared the humoral immune response to SARS-CoV-2 vaccination in 136 patients with rheumatoid arthritis (RA) treated with methotrexate and/or biological or targeted synthetic (b/tsDMARDs). IgG targeting the receptor binding domain (RBD) of SARS-CoV-2 spike protein was measured at a median of 52.5 (range 2-147) days after a third dose of the SARS-CoV-2 mRNA vaccines BNT162b2 or mRNA-1273.Anti-RBD IgG was significantly reduced in elderly patients receiving concomitant treatment with methotrexate as compared with elderly patients receiving monotherapy with b/tsDMARDs or methotrexate (64.8 (20.8, 600.3) binding antibody units per mL (BAU/mL) vs 1106.0 (526.3, 4965.2) BAU/mL vs 1743.8 (734.5, 6779.6) BAU/mL, median (IQR), p<0.001, Kruskal-Wallis test). In younger patients (< 64.5 years), concomitant methotrexate had no significant impact on the humoral immune response.Concomitant methotrexate increases the risk of an insufficient humoral immune response to SARS-CoV-2 vaccination in elderly patients with RA. Pausing methotrexate during the third vaccination period may be considered for this group of patients." @default.
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- W4304080308 date "2022-10-01" @default.
- W4304080308 modified "2023-09-25" @default.
- W4304080308 title "Reduced humoral response to a third dose (booster) of SARS-CoV-2 mRNA vaccines by concomitant methotrexate therapy in elderly patients with rheumatoid arthritis" @default.
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- W4304080308 doi "https://doi.org/10.1136/rmdopen-2022-002632" @default.
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