Research

Enrollment Criteria & Data and Specimens Available

 

CLEAR I

Longitudinal Arm

CLEAR II

Cross-Sectional Arm

Enrollment Criteria
  • Self-reported African American race/ethnicity
  • RA for < 2 years disease duration at study entry, meeting ACR Criteria
  • Age 19 or older
  • African-American controls matched for sex, age, geographic location
  • Self-reported African American race/ethnicity
  • RA diagnosis at study entry, meeting ACR Criteria
  • Age 19 or older
  • African-American controls matched for sex, age, geographic location and
    disconfirmed for RA, Lupus, and other connective tissue autoimmune disease.
Data & Biological Specimens Available
  • Database: Baseline demographic, clinical, and socioeconomic information
  • Radiographic data*
  • Genomic DNA
  • Serum and plasma (limited amounts)
* 300 RA patients at baseline (<2 years disease duration)

175 RA patients at baseline (3 years disease duration)

110 RA patients at baseline (5 years disease duration)
  • Database: Baseline demographic,clinical, and socioeconomic information
  • Radiographic data*
  • Genomic DNA
  • Serum and plasma (limited amounts)
* 500 RA patients at various disease durations

 

 RA subjects (n) 350 500
 Matched Controls (n) 168 200

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