Insulin-like growth factor (IGF)-1, IGF-binding protein-3, and pancreatic cancer in male smokers

Rachael Z. Stolzenberg-Solomon, Paul Limburg, Michael Pollak, Philip R. Taylor, Jarino Virtamo, Demetrius Albanes

Research output: Contribution to journalArticle

38 Scopus citations

Abstract

To investigate whether insulin-like growth factor (IGF)-1 and IGF-binding protein-3 (IGFBP-3) are prospectively associated with exocrine pancreatic cancer, we conducted a nested case-control study within the Alpha-Tocopherol, Beta-Carotene Cancer Prevention Study cohort of 29,133 male Finnish smokers, aged 50-69 years. To avoid the potential influence of subclinical cancer on IGF-1 and IGFBP-3, all subjects in this study were alive without clinical evidence of cancer during their 5th year of the cohort follow-up. Four hundred randomly selected cohort controls and 93 incident pancreatic adenocarcinoma cases that occurred between their 5th follow-up year through 1997 (i.e., up to 12.7 years of follow-up) were included in this study. Concentrations of IGF-1 and IGFBP-3 were measured in serum samples obtained at baseline using ELISA. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated using logistic regression models, adjusted for confounders. Neither IGF-1, IGFBP-3, nor the IGF-1:IGFBP-3 molar ratio was significantly associated with pancreatic cancer: highest compared to lowest tertile, OR = 0.67, 95% CI 0.37-1.21, P trend = 0.17; OR = 0.70, 95% CI 0.38-1.27, P trend = 0.12; and OR = 0.85, 95% CI 0.50-1.46, P trend = 0.54, respectively. Our results do not support the hypothesis that serum IGF-1 and IGFBP-3 concentrations are associated with pancreatic cancer risk among male smokers. Further studies are necessary to evaluate these associations in other populations.

Original languageEnglish (US)
Pages (from-to)438-444
Number of pages7
JournalCancer Epidemiology Biomarkers and Prevention
Volume13
Issue number3
StatePublished - Mar 2004

ASJC Scopus subject areas

  • Epidemiology
  • Oncology

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    Stolzenberg-Solomon, R. Z., Limburg, P., Pollak, M., Taylor, P. R., Virtamo, J., & Albanes, D. (2004). Insulin-like growth factor (IGF)-1, IGF-binding protein-3, and pancreatic cancer in male smokers. Cancer Epidemiology Biomarkers and Prevention, 13(3), 438-444.