Ferreira et al. 2014 found in their GWAS meta‐analysis including children and adults from different populations, that GSDMA gene (rs7212938, G) was associated with risk of asthma without hay fever (OR 1.14, 95% CI 1.07–1.22) and less with risk of hay fever without asthma (OR 1.02, 95% CI 0.98–1.06), suggesting that it is a stronger risk factor for asthma than hay fever [37 ]. This evidence concerns the gene GSDMA and seasonal allergic rhinitis.