Circulating 25-hydroxyvitamin D and risk of epithelial ovarian cancer: Cohort Consortium Vitamin D Pooling Project of Rarer Cancers.

Zheng W, Danforth KN, Tworoger SS, Goodman MT, Arslan AA, Patel AV, McCullough ML, Weinstein SJ, Kolonel LN, Purdue MP, Shu XO, Snyder K, Steplowski E, Visvanathan K, Yu K, Zeleniuch-Jacquotte A, Gao YT, Hankinson SE, Harvey C, Hayes RB, Henderson BE, Horst RL, Helzlsouer KJ
Am J Epidemiol. 2010 172 (1): 70-80

PMID: 20562186 · PMCID: PMC2892541 · DOI:10.1093/aje/kwq118

A role for vitamin D in ovarian cancer etiology is supported by ecologic studies of sunlight exposure, experimental mechanism studies, and some studies of dietary vitamin D intake and genetic polymorphisms in the vitamin D receptor. However, few studies have examined the association of circulating 25-hydroxyvitamin D (25(OH)D), an integrated measure of vitamin D status, with ovarian cancer risk. A nested case-control study was conducted among 7 prospective studies to evaluate the circulating 25(OH)D concentration in relation to epithelial ovarian cancer risk. Logistic regression models were used to estimate odds ratios and 95% confidence intervals among 516 cases and 770 matched controls. Compared with 25(OH)D concentrations of 50-<75 nmol/L, no statistically significant associations were observed for <37.5 (odds ratio (OR) = 1.21, 95% confidence interval (CI): 0.87, 1.70), 37.5-<50 (OR = 1.03, 95% CI: 0.75, 1.41), or > or =75 (OR = 1.11, 95% CI: 0.79, 1.55) nmol/L. Analyses stratified by tumor subtype, age, body mass index, and other variables were generally null but suggested an inverse association between 25(OH)D and ovarian cancer risk among women with a body mass index of > or =25 kg/m(2) (P(interaction) < 0.01). In conclusion, this large pooled analysis did not support an overall association between circulating 25(OH)D and ovarian cancer risk, except possibly among overweight women.

MeSH Terms (15)

Adult Case-Control Studies China Cohort Studies Female Finland Humans Logistic Models Ovarian Neoplasms Overweight Prospective Studies Risk Factors United States Vitamin D Vitamin D Deficiency

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