Comparison of the frequency of HLA-A alleles carried on HLA-B27+ haplotype between patients with familial spondyloarthropathy and the French control population*
| HLA-A allele | Patients haplotypes (n=81) | Control haplotypes (n=196) | p Value†| OR (95% CI) |
|---|---|---|---|---|
| OR, odds ratio; CI, confidence interval. | ||||
| *Except where otherwise indicated, values are the number (%) of haplotypes; †statistical comparisons were performed, using Fisher's exact test. | ||||
| A1 | 1 (1.2) | 11 (5.6) | 0.19 | 0.2 (0.03 to 1.7) |
| A2 | 31 (38.3) | 61 (31.3) | 0.26 | 1.4 (0.8 to 2.4) |
| A3 | 8 (9.9) | 20 (10) | 1 | 1 (0.4 to 2.29) |
| A11 | 12 (14.8) | 18 (9.4) | 0.2 | 1.7 (0.8 to 3.8) |
| A23 | 1 (1.2) | 2 (1.2) | 1 | 1.2 (0.1 to 13.6) |
| A24 | 4 (4.9) | 24 (12.1) | 0.08 | 0.4 (0.1 to 1.1) |
| A25 | 3 (3.7) | 1 (0.6) | 0.08 | 7.5 (0.8 to 73.2) |
| A26 | 1 (1.2) | 13 (6.5) | 0.07 | 0.2 (0.02 to 1.4) |
| A28 | 7 (8.6) | 11 (5.6) | 0.42 | 1.6 (0.6 to 4.3) |
| A29 | 2 (2.5) | 4 (2.1) | 1 | 1.2 (0.2 to 6.8) |
| A30 | 0 (0) | 8 (3.8) | 0.11 | 0.1 (0.01 to 2.4) |
| A31 | 2 (2.5) | 6 (2.9) | 1 | 0.8 (0.2 to 4.1) |
| A32 | 7 (8.6) | 16 (8.3) | 1 | 1.1 (0.4 to 2.7) |
| A33 | 1 (1.2) | 1 (0.6) | 0.5 | 2.4 (0.2 to 39.5) |
| A43 | 1 (1.2) | 0 (0) | 0.29 | 7.3 (0.3 to 182) |