Figs S2–S6 online show Forest plots for the meta‐analysis of the associations between TRPA1 and childhood‐onset asthma across GABRIEL studies, for five of the six SNPs most significantly associated with asthma in ALSPAC (rs920829 was not genotyped in GABRIEL; it was imputed in ALSPAC, but it is in strong LD with rs3735945). This evidence concerns the gene TRPA1 and asthma.