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Increased plasma levels of insulin-like growth factor 2 and insulin-like growth factor binding protein 3 are associated with endometrial cancer risk.

Abstract
Circulating insulin-like growth factors (IGFs) and their binding proteins have been associated with increased risk of breast, prostate, colon, and lung cancer. To examine the association of IGFs and endometrial cancer risk, we measured the plasma levels of IGF-1, IGF-2, and IGF binding protein 3 (IGFBP-3) by ELISA in 80 women with endometrial cancer and 80 age-matched control subjects with no history of cancer. Mean plasma levels of IGF-2 were significantly higher in women with cancer versus controls (670 ng/ml versus 380 ng/ml, P < 0.001). In contrast, significantly lower mean plasma levels of IGF-1 (155 mg/ml versus 185 ng/ml, P < 0.01) and IGFBP-3 (1703 ng/ml versus 2170 ng/ml, P < 0.001) were observed among cases compared to the control group. Women in the highest quartile of IGF-2 were found to have 9.67 (95% confidence interval 3.29-28.43) times the risk of endometrial cancer than women in the lowest quartiles. Women in the highest quartile of IGFBP-3 were associated with a significantly decreased risk for developing endometrial cancer (odds ratio = 0.23, 95% confidence interval 0.09-0.60). These data suggest that increased plasma levels of IGF-2 and decreased levels of IGFBP-3 are associated with an increased risk of endometrial cancer. Further validation of these results is needed to determine the potential usefulness of risk assessment.
AuthorsJonathan C Oh, Weiguo Wu, Guillermo Tortolero-Luna, Russell Broaddus, David M Gershenson, Thomas W Burke, Rosemarie Schmandt, Karen H Lu
JournalCancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology (Cancer Epidemiol Biomarkers Prev) Vol. 13 Issue 5 Pg. 748-52 (May 2004) ISSN: 1055-9965 [Print] United States
PMID15159305 (Publication Type: Comparative Study, Journal Article)
Chemical References
  • Biomarkers, Tumor
  • Insulin-Like Growth Factor Binding Protein 3
  • Insulin-Like Growth Factor II
Topics
  • Adult
  • Age Distribution
  • Aged
  • Biomarkers, Tumor (blood)
  • Case-Control Studies
  • Cohort Studies
  • Confidence Intervals
  • Endometrial Neoplasms (blood, epidemiology)
  • Enzyme-Linked Immunosorbent Assay
  • Female
  • Humans
  • Incidence
  • Insulin-Like Growth Factor Binding Protein 3 (blood)
  • Insulin-Like Growth Factor II (metabolism)
  • Logistic Models
  • Middle Aged
  • Multivariate Analysis
  • Neoplasm Staging
  • Odds Ratio
  • Prognosis
  • Risk Assessment
  • Sensitivity and Specificity
  • United States (epidemiology)

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