HLA-DQA1 and asthma: The association with asthma protection of HLA-DQA1*01:02 reached study-wise significance in the meta-analysis results from stage 1 and stage 2 (OR [95% CI] = 0.64 [0.50–0.82], p = 3.98 × 10–4) (Table 3, Fig. 1).