Transforming growth factor beta receptor I polyalanine repeat polymorphism does not increase ovarian cancer risk.

Journal Article (Journal Article)

OBJECTIVES: It has been suggested that the 6A allele of the type I TGFbeta receptor (TGFbetaR1) polyalanine repeat tract polymorphism may increase susceptibility to various types of cancer including ovarian cancer. METHODS: The TGFbetaR1 polyalanine polymorphism was genotyped in 588 ovarian cancer cases and 614 controls from a population-based case-control study in North Carolina. RESULTS: Significant racial differences in the frequency of the 6A allele were observed between Caucasian (10.7%) and African-American (2.4%) controls (P < 0.001). One or two copies of the 6A allele of the TGFbetaR1 polyalanine polymorphism was carried by 18% of all controls and 19% of cases, and there was no association with ovarian cancer risk (OR = 1.07, 95% CI 0.80-1.44). The odds ratio for 6A homozygotes was 1.81 (95% CI 0.655.06), but these comprised only 0.98% of controls and 1.70% of cases. CONCLUSIONS: The 6A allele of the TGFbetaR1 polyalanine polymorphism does not appear to increase ovarian cancer risk. Larger studies would be needed to exclude the possibility that the small fraction of individuals who are 6A homozygotes have an increased risk of ovarian or other cancers.

Full Text

Duke Authors

Cited Authors

  • Spillman, MA; Schildkraut, JM; Halabi, S; Moorman, P; Calingaert, B; Bentley, RC; Marks, JR; Murphy, S; Berchuck, A

Published Date

  • May 2005

Published In

Volume / Issue

  • 97 / 2

Start / End Page

  • 543 - 549

PubMed ID

  • 15863158

International Standard Serial Number (ISSN)

  • 0090-8258

Digital Object Identifier (DOI)

  • 10.1016/j.ygyno.2005.01.025


  • eng

Conference Location

  • United States