GSTP1 and asthma: Effect estimates were elevated and statistically significant in carriers of minor alleles of GSTP1 rs1138272 and rs1695 in models for current asthma (corrected p-value for minor allele carriers = 0.006; corrected p-value for homozygous major allele carriers = 0.766; corrected p-values for interaction = 0.039) and ever asthma (corrected p-value for minor allele carriers = 0.048; corrected p-value for homozygous major allele carriers = 0.432; corrected p-values for interaction = 0.087), respectively.