Understanding Mixed Connective Tissue Disease and Systemic Lupus Erythematosus

Immune Response to Small Nuclear Ribonucleoprotein Autoantigens

Observational University of Miami · NCT00582881

This study is trying to learn more about how mixed connective tissue disease and lupus affect the immune system and body, so they can help create better treatments for people with these conditions.

Quick facts

Study typeObservational
Enrollment400 (estimated)
Ages18 Years to 100 Years
SexAll
SponsorUniversity of Miami Academic / other
Drugs / interventionsmethotrexate, cyclophosphamide
Locations1 site (Miami, Florida)
Trial IDNCT00582881 on ClinicalTrials.gov

What this trial studies

This study aims to characterize the immune system abnormalities, genetic factors, and disease progression in individuals diagnosed with mixed connective tissue disease (MCTD) and systemic lupus erythematosus (SLE). Participants will attend up to four study visits over the course of the study, where they will complete questionnaires, undergo physical exams, and provide blood and urine samples. The research focuses on understanding how these autoimmune diseases affect various body systems and the potential genetic components involved. By gathering this information, the study seeks to contribute to the development of new and effective treatments for these conditions.

Who should consider this trial

Good fit: Ideal candidates for this study are individuals diagnosed with systemic lupus erythematosus or mixed connective tissue disease.

Not a fit: Patients with unstable medical conditions, significant cardiopulmonary disease, or those on high doses of corticosteroids or cytotoxic drugs may not benefit from this study.

Why it matters

Potential benefit: If successful, this research could lead to improved understanding and treatment options for patients with MCTD and SLE.

How similar studies have performed: Previous studies have explored aspects of SLE and MCTD, but this specific characterization approach may provide novel insights into these diseases.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with known rheumatic diseases including systemic lupus erythematosus, rheumatoid arthritis, connective tissue disease, undifferentiated connective tissue disease

Exclusion Criteria:

* Poor venous access, unstable medical problems or significant cardiopulmonary disease, anemia, leukopenia, thrombocytopenia, anticoagulation therapy, recent significant changes in medication or pregnacy. Patient cannot be taking large dose of corticosteroids (above 30mg per day) or cytotoxic drugs (cyclophosphamide, azathiprine, cyclosporine, methotrexate).

Where this trial is running

Miami, Florida

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Mixed Connective Tissue DiseaseSystemic Lupus ErythematosusAnti-RNP/Sm Autoantibody-PositiveMCTDSLE
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.