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Circulating B-cell, Drug and Anti-drug Antibodies Monitoring in Patients Treated With Rituximab for Autoimmune Disorders

NCT07037732 · Status: RECRUITING · Type: OBSERVATIONAL · Enrollment: 50

Last updated 2025-06-25

No results posted yet for this study

Summary

The MONIRITUX study aimed to evaluate whether monitoring (i) circulating B-cell reconstitution or (ii) serum rituximab levels could help identify relapse of autoimmune diseases in patients treated with rituximab. Retrospective data suggest that B-cell reconstitution or the appearance of anti-drug antibodies are associated with rituximab's failure to prevent relapses (i.e. rheumatoid arthritis, systemic lupus erythematosus, autoimmune cytopenia...). According to the routine care provided by our institution, patients undergoing rituximab therapy are monitored every three months during the first year after treatment induction and every six months thereafter. At each clinical visit, a blood test is performed to quantify total gammaglobulins, IgG and CD19+ cells (along with other tests depending on the disease). This study will use the remaining blood in the tubes from routine care to quantify CD27+ and CD38+ B cells, as well as serum rituximab and anti-rituximab antibodies, during the first year of follow-up. The primary outcome will be to identify risk factors for clinical relapse according to circulating B-cell or rituximab status.

Conditions

  • Autoimmune Cytopenia
  • Connective Tissue Disorder
  • Systemic Vasculitis

Sponsors & Collaborators

  • Centre Hospitalier Universitaire de Nice

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-06-01
Primary Completion
2030-01-01
Completion
2030-06-01

Countries

  • France

Study Locations

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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 NCT07037732 on ClinicalTrials.gov