CYP1A1 and cancer: Overall, a significantly increased risk of cancer was associated with the CYP1A1 G/G polymorphism for the allele contrast (G vs. A: OR = 1.18 CI = 1.12–1.25), the additive genetic model (G/G vs. A/A: OR =1.52 CI = 1.34–1.72; G/G vs. G/A: OR = 1.28 CI = 1.17–1.39), the recessive genetic model (G/G vs. G/A+A/A: OR = 1.42 CI = 1.27–1.60) and the dominant genetic model (G/G + G/A vs. A/A: OR = 1.18 CI = 1.11–1.26).