NQO1 and asthma: Subjects homozygous for the NQO1 rs291766 C allele were at greater risk (p-value for interaction = 0.04) for developing asthma (OR = 2.02; 95% CI, 1.16–3.73) compared with those with CG/GG genotypes (OR = 1.26; 95% CI, 0.83–1.99).