Table 3. Association of the DLA-DRB1*02001/DQA1*00401/DQB1*01303 genotypes with polymyositis, relative to the disease risk in individuals who are DLA-DRB1*02001/DQA1*00401/DQB1*01303 homozygous negative.
| Genotype | Cases | Controls | OR | 95% CI |
| n = 29 | n = 46 | (compared to controls) | ||
| DRB1/DQA1/DQB1 | n (%) | n (%) | ||
| 02001/00401/01303 (−/−) | 4 (13.8) | 24 (52.2) | 1 | Baseline |
| 02001/00401/01303 (−/+) | 15 (51.7) | 18 (39.1) | 5 | 1.25–21.67 |
| 02001/00401/01303 (+/+) | 10 (34.5) | 4 (8.7) | 15 | 2.54–104.45 |