Microsomal epoxide hydrolase polymorphism as a risk factor for ovarian cancer.

Journal Article (Journal Article)

Microsomal epoxide hydrolase (EPHX) is one of many enzymes involved in the metabolism of endogenous and exogenous toxicants. Polymorphic forms of the human EPHX gene have been described that vary in enzymatic activity, and one, Tyr113His, has been associated with hepatocellular carcinoma susceptibility. We demonstrated that EPHX was highly expressed in the human ovary, and investigated whether specific EPHX genotypes are associated with ovarian cancer susceptibility. Seventy-three Caucasian patients with ovarian cancer and 75 Caucasian-female controls without cancer were genotyped for the Tyr113His polymorphism by a polymerase chain reaction-restriction fragment length polymorphism assay. The frequency of the homozygous high-activity genotype was 41% in the control population and 64% in the ovarian cancer patients. The odds ratio for ovarian cancer with this genotype was 2.6 (95% confidence interval 1.3, 5.0; P < 0.01). The increased ovarian cancer risk associated with the high-activity genotype could reflect differences in metabolic activation of endogenous or exogenous carcinogens.

Full Text

Duke Authors

Cited Authors

  • Lancaster, JM; Brownlee, HA; Bell, DA; Futreal, PA; Marks, JR; Berchuck, A; Wiseman, RW; Taylor, JA

Published Date

  • November 1996

Published In

Volume / Issue

  • 17 / 3

Start / End Page

  • 160 - 162

PubMed ID

  • 8944076

International Standard Serial Number (ISSN)

  • 0899-1987

Digital Object Identifier (DOI)

  • 10.1002/(SICI)1098-2744(199611)17:3<160::AID-MC8>3.0.CO;2-J


  • eng

Conference Location

  • United States