Associations of smoking with breast cancer tended to be somewhat stronger among the women with the slow acetylator genotype for NAT2: when compared to those who never smoked and were rapid acetylators, the OR for ever smoking was 1.50 (95% CI: 1.11-2.02) in slow acetylators, and OR: 1.24 (95% CI: 0.91-1.70) in rapid acetylators.
C0037369
Smoking