To determine whether alleles at one or more of the HLA loci were associated with Artemisia pollen hypersensitivity in allergic rhinitis patients, Xing et al. [74] also tested the frequency distribution of the HLA-DQA1 and DQB alleles in 41 patients with allergic rhinitis (AR) and in 41 healthy controls from Beijing with PCR-SSP. This evidence concerns the gene HLA-DQA1 and allergic rhinitis.