Ambient air pollution contributes to chronic obstructive pulmonary disease (COPD), but the genetic factors that may influence susceptibility remain poorly defined. We conducted a genome-wide interacti Show more
Ambient air pollution contributes to chronic obstructive pulmonary disease (COPD), but the genetic factors that may influence susceptibility remain poorly defined. We conducted a genome-wide interaction analysis to identify genetic markers that may modify the association between air pollution and COPD. We analyzed data from 16,839 Canadian Longitudinal Study of Aging participants, including spirometry, genome-wide genotype data (645,625 single-nucleotide polymorphisms [SNPs]), and air pollution exposure estimates. COPD was defined as a forced expiratory volume in 1 second to forced vital capacity ratio (FEV Show less