TRPA1 and asthma: In PIAMA, information on current doctor‐diagnosed asthma at age 8 years was obtained for 3253 children, and TRPA1 genotype data were available for 1968 children, generating a final sample of 1877 white children with data on asthma and genotype, of whom 89 (4.7%) had current doctor‐diagnosed asthma at age 8 years.