HLA-Cw*06 | PsA cases | Population controls n = 166 | Type I psoriasis n = 611 | ||
Total cohort n = 453 | Type I n = 335 | Type II n = 115 | |||
0 | 262 (57.8) | 166 (49.6) | 94 (81.7) | 138 (83.1) | 254 (41.6) |
1 | 182 (40.2) | 162 (48.4) | 19 (16.5) | 28 (16.9) | 323 (52.9) |
2 | 9 (2) | 7 (2) | 2 (1.8) | 0 | 34 (5.5) |
Phenotype | 191 (42.2) | 169 (50.4) | 21 (18.3) | 28 (16.9) | 357 (58.4) |
p-Value* | 5.5×10−9 | 4.39×10−13 | 0.76 | 2.15×10−21 |
PsA, psoriatic arthritis. Type I, patients with PsA with type I psoriasis; type II, patients with PsA with type II psoriasis.
*Comparison of phenotype (carriage of one or two alleles) with population controls using the χ2 test.
Data shown in n (%). Data were not available for three patients as to the type of psoriasis present.