CYP3A4 and ovarian cancer: The association between this CYP3A4 variant and risk of ovarian cancer was consistent across these two racial/ethnic groups in the combined existing and follow-up data: ORhom in Blacks=6.82 (95% CI 0.73–63.86, P=0.093) and ORhom in Whites=2.40 (95% CI 0.67–8.68, P=0.18).