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||Circulating 25-hydroxyvitamin D and risk of kidney cancer: Cohort Consortium Vitamin D Pooling Project of Rarer Cancers.
||Gallicchio L, Moore LE, Stevens VL, Ahn J, Albanes D, Hartmuller V, Setiawan VW, Helzlsouer KJ, Yang G, Xiang YB, Shu XO, Snyder K, Weinstein SJ, Yu K, Zeleniuch-Jacquotte A, Zheng W, Cai Q, Campbell DS, Chen Y, Chow WH, Horst RL, Kolonel LN, McCullough ML, Purdue MP, Koenig KL
||Am J Epidemiol
||2010 Jul 1
||OEEB, NEB, BB, IIB
||Although the kidney is a major organ for vitamin D metabolism, activity, and calcium-related homeostasis, little is known about whether this nutrient plays a role in the development or the inhibition of kidney cancer. To address this gap in knowledge, the authors examined the association between circulating 25-hydroxyvitamin D (25(OH)D) and kidney cancer within a large, nested case-control study developed as part of the Cohort Consortium Vitamin D Pooling Project of Rarer Cancers. Concentrations of 25(OH)D were measured from 775 kidney cancer cases and 775 age-, sex-, race-, and season-matched controls from 8 prospective cohort studies. Overall, neither low nor high concentrations of circulating 25(OH)D were significantly associated with kidney cancer risk. Although the data showed a statistically significant decreased risk for females (odds ratio = 0.31, 95% confidence interval: 0.12, 0.85) with 25(OH)D concentrations of > or =75 nmol/L, the linear trend was not statistically significant and the number of cases in this category was small (n = 14). The findings from this consortium-based study do not support the hypothesis that vitamin D is inversely associated with the risk of kidney cancer overall or with renal cell carcinoma specifically.