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Glycosylation Analysis of Lupus Anti-DNA Antibodies (GALA)

NCT05394922 · Status: RECRUITING · Type: OBSERVATIONAL · Enrollment: 140

Last updated 2024-08-05

No results posted yet for this study

Summary

Systemic lupus erythematosus (SLE) is a severe autoimmune disease in which patients often develop numerous autoantibodies (Abs). Unfortunately, none of the SLE specific Abs described so far (anti-DNA, -C1q, -nucleosome) are correlated enough to the disease activity to be used as a useful biomarker and reliably help in the therapeutic decision.

Abs effector functions, including antibody-dependent cell-mediated cytotoxicity (ADCC), antibody-dependent cellular phagocytosis (ADCP) and antibody-mediated complement activation, are conditioned by the structure of the crystallizable fragment (Fc) and especially the N-linked oligosaccharide structures attached to the asparagine-297 in the CH2 domain of the Fc region. It has been shown that the decrease in galactosylation, sialylation and fucolylation is generally associated with inflammatory function of circulating IgG whereas Abs with sialic acid, fucose and/or galactose in Asn-297 are anti-inflammatory. This major role of Ab glycosylation in the regulation of the effector and pathogenic functions of Abs have been well documented in rheumatoid arthritis and ANCA associated vasculitis with a good correlation between Ab sialylation and disease activity. In lupus, it has been shown that glycosylation of total IgG is also altered and correlated with disease activity but glycosylation analysis of the LES specific Abs is still lacking.

The aim of this study is to analyse by mass spectrometry (MS) the different glycoforms of anti-DNA Abs in lupus patients and find a correlation with disease activity.

Conditions

Sponsors & Collaborators

  • University Hospital, Montpellier

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2022-08-23
Primary Completion
2026-02-22
Completion
2027-02-22

Countries

  • France

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05394922 on ClinicalTrials.gov