RT Journal Article T1 Bisphenol-A exposure and risk of breast and prostate cancer in the Spanish European Prospective Investigation into Cancer and Nutrition study A1 Salamanca-Fernández, Elena A1 Rodríguez-Barranco, Miguel A1 Amiano, Pilar A1 Delfrade, Josu A1 Chirlaque, Maria Dolores A1 Colorado, Sandra A1 Guevara, Marcela A1 Jimenez, Ana A1 Arrebola, Juan Pedro A1 Vela, Fernando A1 Olea, Nicolás A1 Agudo, Antonio A1 Sanchez-Perez, Maria-Jose K1 Breast cancer K1 Prostate cancer K1 Case-cohort K1 Bisphenol a K1 Environmental pollutants K1 Endocrine disruptors K1 Neoplasias de la mama K1 Neoplasias de la próstata K1 Estudios de cohortes K1 Bisfenol A glicidil metacrilato K1 Contaminantes ambientales K1 Disruptores endocrinos AB BackgroundBisphenol A (BPA) is an endocrine disruptor that it is present in numerous products of daily use. The aim of this study was to assess the potential association of serum BPA concentrations and the risk of incident breast and prostate cancer in a sub-cohort of the Spanish European Prospective Investigation into Cancer and Nutrition (EPIC).MethodsWe designed a case-cohort study within the EPIC-Spain cohort. Study population consisted on 4812 participants from 4 EPIC-Spain centers (547 breast cancer cases, 575 prostate cancer cases and 3690 sub-cohort participants). BPA exposure was assessed by means of chemical analyses of serum samples collected at recruitment. Borgan II weighted Cox regression was used to estimate hazard ratios.ResultsMedian follow-up time in our study was 16.9 years. BPA geometric mean serum values of cases and sub-cohort were 1.12 ng/ml vs 1.10 ng/ml respectively for breast cancer and 1.33 ng/ml vs 1.29 ng/ml respectively for prostate cancer. When categorizing BPA into tertiles, a 40% increase in risk of prostate cancer for tertile 1 (p = 0.022), 37% increase for tertile 2 (p = 0.034) and 31% increase for tertile 3 (p = 0.072) was observed with respect to values bellow the limit of detection. No significant association was observed between BPA levels and breast cancer risk.ConclusionsWe found a similar percentage of detection of BPA among cases and sub-cohort from our population, and no association with breast cancer risk was observed. However, we found a higher risk of prostate cancer for the increase in serum BPA levels. Further investigation is needed to understand the influence of BPA in prostate cancer risk. PB BioMed Central, Springer Nature YR 2021 FD 2021-08-16 LK http://hdl.handle.net/10668/4435 UL http://hdl.handle.net/10668/4435 LA en NO Salamanca-Fernández E, Rodríguez-Barranco M, Amiano P, Delfrade J, Chirlaque MD, Colorado S, et al. Bisphenol-A exposure and risk of breast and prostate cancer in the Spanish European Prospective Investigation into Cancer and Nutrition study. Environ Health. 2021 Aug 16;20(1):88 DS RISalud RD Apr 5, 2025