EPHX1 and ovarian cancer: After stratification for ethnicity, we observed that in the Chinese population of 86 cases and 174 controls [13], mEH polymorphism was not associated with increased or decreased risk of ovarian cancer based on the C allele, homozygote comparison, or recessive and dominant genetic models (C allele, OR = 0.83, 95% CI = 0.58-1.20, P = 0.32; homozygotes, OR = 0.78, 95% CI = 0.42-1.46, P = 0.44; recessive model, OR = 0.77, 95% CI = 0.45-1.30, P = 0.32; dominant model, OR = 1.13, 95% CI = 0.65-1.99, P = 0.66).