Association of female reproductive and hormonal factors with gallbladder cancer risk in Asia: A pooled analysis of the Asia Cohort Consortium
- Department of Preventive Medicine Seoul National University College of Medicine Seoul Republic of Korea, Cancer Research Institute Seoul National University Seoul Republic of Korea, Integrated Major in Innovative Medical Science Seoul National University College of Medicine Seoul Republic of Korea, Medical Research Centre, Genomic Medicine Institute Seoul National University College of Medicine Seoul Republic of Korea
- Department of Preventive Medicine Seoul National University College of Medicine Seoul Republic of Korea, Medical Research Centre, Genomic Medicine Institute Seoul National University College of Medicine Seoul Republic of Korea
- Division of Prevention, Centre for Public Health Sciences, National Cancer Centre Institute for Cancer Control Tokyo Japan
- Division of Prevention, Centre for Public Health Sciences, National Cancer Centre Institute for Cancer Control Tokyo Japan, Hitotsubashi Institute for Advanced Study Hitotsubashi University Tokyo Japan
- Division of Prevention, Centre for Public Health Sciences, National Cancer Centre Institute for Cancer Control Tokyo Japan, Research Centre for Child Mental Development Hamamatsu University School of Medicine Hamamatsu Japan
- Sustainable Society Design Center Graduate School of Frontier Science, The University of Tokyo Tokyo Japan
- Department of Preventive Medicine Seoul National University College of Medicine Seoul Republic of Korea
- Division of Cohort Research National Cancer Centre, Institute for Cancer Control Tokyo Japan, National Institute of Health and Nutrition, National Institutes of Biomedical Innovation, Health and Nutrition Osaka Japan
- The Daffodil Centre The University of Sydney, a joint venture with Cancer Council NSW Sydney New South Wales Australia
- Department of Biomedical Sciences Seoul National University Graduate School Seoul Republic of Korea
- Division of Epidemiology, Vanderbilt‐Ingram Cancer Centre, Vanderbilt Epidemiology Centre Vanderbilt University Medical Centre Nashville Tennessee USA
- Division of Cohort Research National Cancer Centre, Institute for Cancer Control Tokyo Japan
- Department of Public Health Hokkaido University Faculty of Medicine Sapporo Japan
- Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore, Singapore Institute for Clinical Sciences, Agency for Science Technology and Research (A*STAR) Singapore Singapore
- Radiation Effects Research Foundation Hiroshima Japan
- Tohoku University Graduate School of Medicine Miyagi Prefecture Japan
- Graduate School of Cancer Science and Policy, National Cancer Centre Gyeonggi‐do Republic of Korea
- Department of Preventive Medicine Seoul National University College of Medicine Seoul Republic of Korea, Cancer Research Institute Seoul National University Seoul Republic of Korea, Integrated Major in Innovative Medical Science Seoul National University College of Medicine Seoul Republic of Korea
- Department of Preventive Medicine Chonnam National University Medical School Gwangju Republic of Korea
- Division of Cohort Research National Cancer Centre, Institute for Cancer Control Tokyo Japan, Graduate School of Public Health International University of Health and Welfare Tokyo Japan
- Division of Cancer Control and Population Sciences, UPMC Hillman Cancer Centre University of Pittsburgh Pittsburgh Pennsylvania USA, Department of Epidemiology, Graduate School of Public Health University of Pittsburgh Pittsburgh Pennsylvania USA
- Department of Public Health Sciences University of Chicago Chicago Illinois USA
- Stony Brook Cancer Centre Stony Brook University Stony Brook New York USA, Department of Medical and Surgical Sciences University of Bologna Bologna Italy
- Saw Swee Hock School of Public Health National University of Singapore Singapore
- Division of Cancer Epidemiology and Prevention Aichi Cancer Centre Research Institute Nagoya Japan, Department of Cancer Epidemiology Nagoya University Graduate School of Medicine Nagoya Japan
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
- Division of Cancer Epidemiology &, Genetics, Occupational and Environmental Epidemiology Branch, National Cancer Institute Bethesda Maryland USA
- Department of Preventive Medicine Seoul National University College of Medicine Seoul Republic of Korea, Integrated Major in Innovative Medical Science Seoul National University College of Medicine Seoul Republic of Korea
Abstract The female predominance of gallbladder cancer (GBC) has led to a hypothesis regarding the hormone‐related aetiology of GBC. We aimed to investigate the association between female reproductive factors and GBC risk, considering birth cohorts of Asian women. We conducted a pooled analysis of 331,323 women from 12 cohorts across 4 countries (China, Japan, Korea, and Singapore) in the Asia Cohort Consortium. Cox proportional hazard models were used to estimate the hazard ratios (HRs) and corresponding 95% confidence intervals (CIs) to assess the association between reproductive factors (age at menarche, parity, age at first delivery, breastfeeding, and age at menopause) and GBC risk. We observed that a later age at menarche was associated with an increased risk of GBC (HR 1.4, 95% CI 1.16–1.70 for 17 years and older vs. 13–14 years), especially among the cohort born in 1940 and later (HR 2.5, 95% CI 1.50–4.35). Among the cohort born before 1940, women with a later age at first delivery showed an increased risk of GBC (HR 1.56, 95% CI 1.08–2.24 for 31 years of age and older vs. 20 years of age and younger). Other reproductive factors did not show a clear association with GBC risk. Later ages at menarche and at first delivery were associated with a higher risk of GBC, and these associations varied by birth cohort.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 2323596
- Journal Information:
- International Journal of Cancer, Journal Name: International Journal of Cancer Vol. 155 Journal Issue: 2; ISSN 0020-7136
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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