Significant association betweenlung cancer and GSTT1 null genotype (OR = 1.2; 95% CI: 1.0–1.6), and homozygousCYP1A1 Msp1variant allele (CYP1A1*2A and *2B) genotype (OR = 4.7 95% CI: 1.2–19.0). Here, CYP1A1 is linked to cancer.