Am J Clin Nutr. 2016 Jan;103(1):161-7.
Nutrient-wide association study of 57 foods/nutrients and epithelial ovarian cancer in the European Prospective Investigation into Cancer and Nutrition study and the Netherlands Cohort Study.
Merritt MA1, Tzoulaki I2, van den Brandt PA3, Schouten LJ3, Tsilidis KK4, Weiderpass E5, Patel CJ6, Tjønneland A7, Hansen L7, Overvad K8, His M9, Dartois L9, Boutron-Ruault MC9, Fortner RT10, Kaaks R10, Aleksandrova K11, Boeing H11, Trichopoulou A12, Lagiou P13, Bamia C14, Palli D15, Krogh V16, Tumino R17, Ricceri F18, Mattiello A19, Bueno-de-Mesquita HB20, Onland-Moret NC21, Peeters PH22, Skeie G23, Jareid M23, Quirós JR24, Obón-Santacana M25, Sánchez MJ26, Chamosa S27, Huerta JM28, Barricarte A29, Dias JA30, Sonestedt E30, Idahl A31, Lundin E32, Wareham NJ33, Khaw KT34, Travis RC35, Ferrari P36, Riboli E2, Gunter MJ2.
Abstract
BACKGROUND:
Studies of the role of dietary factors in epithelial ovarian cancer (EOC) development have been limited, and no specific dietary factors have been consistently associated with EOC risk.
OBJECTIVE:
We used a nutrient-wide association study approach to systematically test the association between dietary factors and invasive EOC risk while accounting for multiple hypothesis testing by using the false discovery rate and evaluated the findings in an independent cohort.
DESIGN:
We assessed dietary intake amounts of 28 foods/food groups and 29 nutrients estimated by using dietary questionnaires in the EPIC (European Prospective Investigation into Cancer and Nutrition) study (n = 1095 cases). We selected 4 foods/nutrients that were statistically significantly associated with EOC risk when comparing the extreme quartiles of intake in the EPIC study (false discovery rate = 0.43) and evaluated these factors in the NLCS (Netherlands Cohort Study; n = 383 cases). Cox regression models were used to estimate HRs and 95% CIs.
RESULTS:
None of the 4 dietary factors that were associated with EOC risk in the EPIC study (cholesterol, polyunsaturated and saturated fat, and bananas) were statistically significantly associated with EOC risk in the NLCS; however, in meta-analysis of the EPIC study and the NLCS, we observed a higher risk of EOC with a high than with a low intake of saturated fat (quartile 4 compared with quartile 1; overall HR: 1.21; 95% CI: 1.04, 1.41).
CONCLUSION:
In the meta-analysis of both studies, there was a higher risk of EOC with a high than with a low intake of saturated fat.
TRIAL REGISTRATION: ClinicalTrials.gov .
© 2016 American Society for Nutrition.