(18-06-07) Alcohol intake and renal cell cancer in a pooled analysis of 12 prospective studies.

Lee JE,Hunter DJSpiegelman DAdami HOAlbanes DBernstein Lvan den Brandt PABuring JECho EFolsom ARFreudenheim JLGiovannucci EGraham SHorn-Ross PLLeitzmann MFMcCullough MLMiller ABParker ASRodriguez CRohan TESchatzkin ASchouten LJVirtanen MWillett WCWolk AZhang SMSmith-Warner SA.
Channing Laboratory, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA. [email protected]
BACKGROUND: The association between alcohol intake and risk of renal cell cancer has been inconsistent in case-control studies. An inverse association between alcohol intake and risk of renal cell cancer has been suggested in a few prospective studies, but each of these studies included a small number of cases. METHODS: We performed a pooled analysis of 12 prospective studies that included 530,469 women and 229,575 men with maximum follow-up times of 7-20 years. All participants had completed a validated food-frequency questionnaire at baseline. Using the primary data from each study, the study-specific relative risks (RRs) for renal cell cancer were calculated using Cox proportional hazards models and then pooled using a random-effects model. All statistical tests were two-sided. RESULTS: A total of 1430 (711 women and 719 men) cases of incident renal cell cancer were identified. The study-standardized incidence rates of renal cell cancer were 23 per 100,000 person-years among nondrinkers and 15 per 100,000 person-years among those who drank 15 g/day or more of alcohol. Compared with nondrinking, alcohol consumption (> or = 15 g/day, equivalent to slightly more than one alcoholic drink per day) was associated with a decreased risk of renal cell cancer (pooled multivariable RR = 0.72, 95% confidence interval = 0.60 to 0.86; P(trend)<.001); statistically significant inverse trends with increasing intake were seen in both women and men. No difference by sex was observed (P(heterogeneity) = .89). Associations between alcohol intake and renal cell cancer were not statistically different across alcoholic beverage type (beer versus wine versus liquor) (P = .40). CONCLUSION: Moderate alcohol consumption was associated with a lower risk of renal cell cancer among both women and men in this pooled analysis.

Fonte: J Natl Cancer Inst.

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