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Updated: Aug 28, 2025

Trans-vivo Delayed Type Hypersensitivity Assay for Antigen Specific Regulation
Published on: May 2, 2013
Response to SARS-CoV-2 vaccines in patients receiving B-cell modulating antibodies for renal autoimmune disease
Frederic Arnold1,2, Daniela Huzly3, Yakup Tanriver1,2
1Department of Medicine IV, Medical Center, Faculty of Medicine, University of Freiburg, Hugstetter Strasse 55, 79106, Freiburg, Freiburg, Germany.
Background:
Effective SARS-CoV-2 vaccination in patients receiving treatment with B-cell depleting agents is challenging. Information on vaccination responses in these patients are a valuable tool to develop efficient vaccination regimens.
Methods:
In this single-center retrospective observational study, we report the humoral and cellular response in 34 patients receiving anti-CD20 antibody treatment for renal immune disease.
Results:
After base immunization with SARS-CoV-2-vaccines, 92.0% developed a cellular, 32.4% a humoral response. Humoral immunity correlated with B-cell counts and the timespan between anti-CD20 antibody treatment and vaccination. All patients with > 21/µl B-cells, or > 197 days after treatment showed humoral response.
Conclusions:
Adequate timing of SARS-CoV-2-vaccinations after anti-CD20 antibody treatment and CD19 measurements are crucial to generate immunity. Awaiting partial B-cell recovery by postponing regularly scheduled anti-CD20 treatment should be considered in patients with stable immune disease.
Trial Registration:
This study has been retrospectively registered in the German Clinical Trials Register (DRKS00027049) on 29/10/2021.
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