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Association of galactose-1-phosphate uridyltransferase activity and N314D genotype with the risk of ovarian cancer.

Abstract
Deficiency in the galactose-1-phosphate uridyltransferase (GALT) enzyme results in accumulation of galactose and its metabolites in the ovary (Am J Epidemiol 1989;130:904-10). Galactose may raise gonadotropin levels, resulting in proliferation of ovarian epithelium. In 1993-1999, the authors conducted a population-based case-control study of ovarian cancer in Hawaii and Los Angeles, California, to examine the hypothesis that reduced GALT activity is associated with an increased risk of ovarian cancer. A total of 239 ovarian cancer cases and 244 population controls were interviewed. A blood sample was collected to measure levels of GALT and to assay for the N314D (A940G) polymorphism of the GALT gene. Covariate-adjusted mean GALT activity was similar between cases (23.8 micro mol per hour/g hemoglobin (Hb)) and controls (23.7 micro mol per hour/g Hb) (p = 0.83). No evidence was found for a dose-response relation between the odds ratios for ovarian cancer and GALT activity or the ratio of lactose intake to GALT activity. The risk associated with the presence of at least one variant Asp314 allele was 0.77 (95% confidence interval: 0.42, 1.41). This study did not support the hypothesis that reduced galactose metabolism is a risk factor for ovarian cancer, although increased GALT activity attenuated the inverse association of oral contraceptive pill use with risk.
AuthorsMarc T Goodman, Anna H Wu, Ko-Hui Tung, Katharine McDuffie, Daniel W Cramer, Lynne R Wilkens, Keith Terada, Juergen K V Reichardt, Won G Ng
JournalAmerican journal of epidemiology (Am J Epidemiol) Vol. 156 Issue 8 Pg. 693-701 (Oct 15 2002) ISSN: 0002-9262 [Print] United States
PMID12370157 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, P.H.S.)
Chemical References
  • Contraceptives, Oral
  • UTP-Hexose-1-Phosphate Uridylyltransferase
  • Galactose
Topics
  • Adult
  • Aged
  • California (epidemiology)
  • Case-Control Studies
  • Contraceptives, Oral (pharmacology)
  • Female
  • Galactose (adverse effects, metabolism)
  • Genetic Predisposition to Disease
  • Genotype
  • Hawaii (epidemiology)
  • Humans
  • Middle Aged
  • Odds Ratio
  • Ovarian Neoplasms (enzymology, epidemiology, genetics)
  • Ovary (enzymology)
  • Risk Factors
  • UTP-Hexose-1-Phosphate Uridylyltransferase (pharmacology)

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