|
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 |