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Distribution of patients with different B27 subtype and B27-negative in JAS and AAS groups.
| JAS | AAS | P | |
|---|---|---|---|
| HLA-B27-negative | 11/145 (7.59%) | 41/360 (11.39%) | 1.000 |
| HLA-B∗2704 | 120/145 (82.76%) | 275/360 (76.39%) | 1.000 |
| HLA-B∗2705 | 11/145 (7.59%) | 38/360 (10.56%) | 1.000 |
| HLA-B∗2715 | 3/145 (2.07%) | 3/360 (0.83%) | 1.000 |
| HLA-B∗2702 | 0/145 (0) | 3/360 (0.83%) | 0.561 |
