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Clinical Trial Summary

To investigate the effect of CTLA4-Ig (abatacept) on phenotype, transcriptional profile, B cell receptor usage and functional parameters of circulating B cells expressing anticitrullinated protein antibodies (ACPA) in patients with early, methotrexate-naïve, ACPA positive rheumatoid arthritis.

Clinical Trial Description

B cells expressing anti citrullinated protein antibodies (ACPA) in patients with rheumatoid arthritis (RA) display an activated, proliferative phenotype. Experimental data indicate that ACPA and ACPA-expressing B cells are actively involved in driving the disease process in RA. The present study is based on the hypothesis that targeted intervention with CTLA4-Ig (abatacept) as a means to interfere with T cell help for B cells in early, active, ACPA-positive rheumatoid arthritis can reverse the activated, proliferative phenotype of citrullinated antigen-specific B cells. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT03492658
Study type Interventional
Source Leiden University Medical Center
Contact Nienke Blomberg
Phone +31 (0) 715298733
Status Not yet recruiting
Phase Phase 4
Start date May 2018
Completion date September 2021

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