TY - JOUR TI - Insulin-like growth factor I and risk of epithelial invasive ovarian cancer by tumour characteristics: results from the EPIC cohort AU - Ose, J. AU - Fortner, R. T. AU - Schock, H. AU - Peeters, P. H. and AU - Onland-Moret, N. C. AU - Bueno-de-Mesquita, H. B. AU - Weiderpass, E. and AU - Gram, I. T. AU - Overvad, K. AU - Tjonneland, A. AU - Dossus, L. and AU - Fournier, A. AU - Baglietto, L. AU - Trichopoulou, A. AU - Benetou, V. and AU - Trichopoulos, D. AU - Boeing, H. AU - Masala, G. AU - Krogh, V. and AU - Matiello, A. AU - Tumino, R. AU - Popovic, M. AU - Obon-Santacana, M. and AU - Larranaga, N. AU - Ardanaz, E. AU - Sanchez, M-J AU - Menendez, V. and AU - Chirlaque, M-D AU - Travis, R. C. AU - Khaw, K-T AU - Braendstedt, J. and AU - Idahl, A. AU - Lundin, E. AU - Rinaldi, S. AU - Kuhn, E. AU - Romieu, I. and AU - Gunter, M. J. AU - Merritt, M. A. AU - Riboli, E. AU - Kaaks, R. JO - British Journal of Cancer PY - 2015 VL - 112 TODO - 1 SP - 162-166 PB - Nature Publishing Group SN - 0007-0920, 1532-1827 TODO - 10.1038/bjc.2014.566 TODO - IGF-I; ovarian cancer; histological subtypes; carcinogenesis; type I/type II; dualistic pathway TODO - Background: Prospective studies on insulin-like growth factor I (IGF-I) and epithelial ovarian cancer (EOC) risk are inconclusive. Data suggest risk associations vary by tumour characteristics. Methods: We conducted a nested case-control study in the European Prospective Investigation into Cancer and Nutrition (EPIC) to evaluate IGF-I concentrations and EOC risk by tumour characteristics (n = 565 cases). Multivariable conditional logistic regression models were used to estimate associations. Results: We observed no association between IGF-I and EOC overall or by tumour characteristics. Conclusions: In the largest prospective study to date was no association between IGF-I and EOC risk. Pre-diagnostic serum IGF-I concentrations may not influence EOC risk. ER -