Antibody development after three mRNA SARS-CoV-2 vaccinations in patients with systemic autoimmune rheumatic disease with and without treatment: an observational cohort study.

Antibody development after three mRNA SARS-CoV-2 vaccinations in patients with systemic autoimmune rheumatic disease with and without treatment: an observational cohort study.

Publication date: Sep 23, 2025

To further elucidate the effects of rare systemic autoimmune rheumatic diseases (SARD) and their treatment on antibody development after vaccination against SARS-CoV-2, we compared patients with and without immunosuppressive therapy to healthy controls in an observational cohort study. We enrolled 52 patients with SARD and 72 healthy subjects in a prospective, observational study at the Medical University of Vienna and measured the humoral response 6 months after two mRNA vaccinations and 2-6 weeks after a third dose. Patients with vasculitis showed significantly (p=0. 02) lower antibody titres 6 months after vaccination (median 247 BAU/mL, IQR [185-437]), as compared with healthy controls (median 514 BAU/mL, [185-437], IQR 323; 928, vasculitis patients: 247, IQR [185; 437], p

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Concepts Keywords
Autoimmune Adult
Rare Aged
Vaccinations Antibodies, Viral
Vienna Antibodies, Viral
Autoimmune Diseases
BNT162 Vaccine
BNT162 Vaccine
Case-Control Studies
Chronic Disease
COVID-19
COVID-19
COVID-19 Vaccines
COVID-19 Vaccines
Female
Humans
IMMUNOLOGY
Immunosuppressive Agents
Immunosuppressive Agents
Male
Middle Aged
Prospective Studies
Rheumatic Diseases
Rheumatology
SARS-CoV-2
Vaccination

Semantics

Type Source Name
disease MESH rheumatic disease

Original Article

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