Table 1 HLA-DRB1 risk levels. Definitions and case-control ratios for shared-epitope (SE) categories.
From: Conditional analysis of the major histocompatibility complex in rheumatoid arthritis
DRB1 risk level | Definition | Case-control ratio |
|---|---|---|
3 = Highest-risk SE | DRB1*0401, 0404, 0405, 0408, or 0409 | 72%-28% |
2 = Lower-risk SE | Other SE alleles | 52%-48% |
1 = No SE | Not an SE allele | 23%-77% |