Alcohol drinking and bladder cancer risk from a pooled analysis of ten cohort studies in Japan

Research Group for the Development and Evaluation of Cancer Prevention Strategies in Japan

研究成果: Article査読

3 被引用数 (Scopus)

抄録

Background: The association of alcohol drinking with bladder cancer risk remains unclear in East Asian populations. Aldehyde dehydrogenase 2 (ALDH2) enzyme oxidizes alcohol-metabolized carcinogenic acetaldehyde into acetate. It is well known that the inactive ALDH2 carriers, specific to East Asian populations, have an increased risk of several cancer types because of increased exposure to acetaldehyde after alcohol consumption. The aim of this study was to examine the association between alcohol drinking and bladder cancer risk using data from ten population-based prospective cohort studies in Japan, where approximately 40% of the population has inactive ALDH2 enzyme. Methods: We analyzed 340,497 Japanese participants with average follow-up of 13.4 years. The association between alcohol drinking and bladder cancer risk was evaluated using Cox regression models within each study, and random-effects models were used to estimate pooled hazard ratios (HRs) with corresponding 95% confidence intervals (CIs). Results: During 4,729,071 person-years, 936 men and 325 women were newly diagnosed with bladder cancer. Our results showed no evidence of significant association between alcohol drinking and bladder cancer risk even among men who consumed alcohol of ≥69 g=week, with HR of 1.02 (95% CI, 0.79–1.33). The null result was observed consistently among women. Conclusions: Our findings do not support an association between alcohol drinking and bladder cancer risk in the Japanese, at least without consideration of the polymorphisms of alcohol-metabolizing enzymes.

本文言語English
ページ(範囲)309-313
ページ数5
ジャーナルjournal of epidemiology
30
7
DOI
出版ステータスPublished - 2020

ASJC Scopus subject areas

  • 疫学

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