of borderline significanceP =0.036
When considering DRB1*15- negative individuals, there was an additional significantly positive association with DRB1*04 (OR=1.88, 95% CI=1.34–2.63, P =1.6 × 10 −4 ) and a negative association with DRB1*07 of borderline significance (OR=0.69, 95% CI=0.49–0.98, P =0.036).