Alcohol Consumption and Breast Cancer Risk According to Hormone Receptor Status in Japanese Women: A Case-Control Study

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Author(s)

    • Takizawa Yoko
    • Division of Community Health, Tohoku University Graduate School of Medicine
    • Kawai Masaaki
    • Department of Breast Oncology, Miyagi Cancer Center Hospital|Department of Surgical Oncology, Tohoku University Graduate School of Medicine
    • Nishino Yoshikazu
    • Division of Cancer Epidemiology and Prevention, Miyagi Cancer Center Research Institute|Department of Epidemiology and Public Health, Kanazawa Medical University
    • Ohuchi Noriaki
    • Department of Surgical Oncology, Tohoku University Graduate School of Medicine
    • Minami Yuko
    • Division of Community Health, Tohoku University Graduate School of Medicine|Division of Cancer Epidemiology and Prevention, Miyagi Cancer Center Research Institute|Center for Preventive Medicine, Osaki Citizen Hospital

Abstract

<p>Alcohol consumption is a risk factor for breast cancer in Western countries, but few studies have evaluated the risk for Japanese women, who have a relatively low alcohol intake. This case-control study investigated the association of alcohol consumption with breast cancer risk according to estrogen-receptor and progesterone-receptor (ER/PgR) status in Japanese women. From female patients aged 30 years and over admitted to a single hospital in Japan between 1997 and 2011, 1,256 breast cancer cases (669 ER+/PgR+, 162 ER+/PgR−, 21 ER−/PgR+, 305 ER−/PgR−, and 99 missing) and 2,933 controls were selected. Alcohol-related measures were assessed using a self-administered questionnaire. Unconditional logistic regression analysis was performed. Alcohol-related measures were not associated with breast cancer risk among the women overall. Moreover, no association was observed between ever drinking and the risk of a concordant receptor subtype (ER+/PgR+ or ER−/PgR−). Conversely, ever drinking was inversely associated with the risk of discordant subtype (ER+/PgR−, odds ratio (OR) = 0.63, 95% confidence interval (CI): 0.41-0.95; ER−/PgR+, OR = 0.44, 95% CI: 0.14-1.42). For ER+/PgR−, an inverse association with the amount of alcohol consumed per day was observed (<i>P </i>for trend = 0.04), and this inverse association was limited to premenopausal women. Alcohol consumption may have differential effects on concordant and discordant receptor subtypes of breast cancer. In view of the low frequency of discordant subtype in Japanese women and their relatively low alcohol intake, our findings may provide a clue for elucidating the etiology of breast cancer rather than for preventing discordant subtype.</p>

Journal

  • The Tohoku Journal of Experimental Medicine

    The Tohoku Journal of Experimental Medicine 244(1), 63-73, 2018

    Tohoku University Medical Press

Codes

  • NII Article ID (NAID)
    130006316035
  • Text Lang
    ENG
  • ISSN
    0040-8727
  • Data Source
    J-STAGE 
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