Study of Genetic Anomalies of Complement Related Proteins in Patients With IgA Glomerulonephritis

Completed

• Conditions: IGA Glomerulonephritis

• Registration Number: NCT00004305
• Lead Sponsor: National Center for Research Resources (NCRR)

Brief Summary

OBJECTIVES: I. Determine whether allelic differences associated with the fourth component of complement, type-1 complement receptor expressed on erythrocytes, and Fc receptor FcgRIII contribute to the pathogenesis of IgA glomerulonephritis (IgA-N).

II. Compare genetic anomalies of these key components in immune complex processing and clearance between juvenile vs adult onset IgA-N vs normal controls.

Detailed Description

PROTOCOL OUTLINE:

Participants undergo qualitative genetic analysis of complement-related proteins. Studies include: genomic re-arrangement of 4-gene unit, C4 DNA sequence and RNA expression, type-1 complement receptor DNA sequence, Fc-gamma receptor IIIA isoform analysis, classical and alternative complement activation pathway assays, plasma C4 and C4d protein levels, and immunoglobulin patterns in glomerular deposits.

Study Timeline

• Study Start: 1998-01
• Study First Submitted: 1999-10-18
• Study First Submitted QC: 1999-10-18
• Study First Posted: 1999-10-19
• Status Verified: 2002-04
• Last Update Submitted: 2005-06-23
• Last Update Posted: 2005-06-24

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 105

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Trial Locations

Locations (1)

Ohio State University; 🇺🇸 Columbus, Ohio, United States