Cited by 321Cancer Risks and FactorsMenopause: Health Impacts and TreatmentsEndometrial and Cervical Cancer Treatments

Body mass index, hormone replacement therapy, and endometrial cancer risk: A meta-analysis

Crosbie, Emma J., Zwahlen, Marcel, Kitchener, Henry C., Egger, Matthias, Renehan, Andrew G.·2010·Cancer Epidemiology, Biomarkers & Prevention

Published version of a preprint

Abstract

Background: Body mass index (BMI) is a risk factor for endometrial cancer. We quantified the risk and investigated whether the association differed by use of hormone replacement therapy (HRT), menopausal status, and histologic type. Methods: We searched MEDLINE and EMBASE (1966 to December 2009) to identify prospective studies of BMI and incident endometrial cancer. We did random-effects meta-analyses, meta-regressions, and generalized least square regressions for trend estimations assuming linear, and piecewise linear, relationships. Results: Twenty-four studies (17,710 cases) were analyzed; 9 studies contributed to analyses by HRT, menopausal status, or histologic type, all published since 2003. In the linear model, the overall risk ratio (RR) per 5 kg/m2 increase in BMI was 1.60 (95% CI, 1.52–1.68), P < 0.0001. In the piecewise model, RRs compared with a normal BMI were 1.22 (1.19–1.24), 2.09 (1.94–2.26), 4.36 (3.75–5.10), and 9.11 (7.26–11.51) for BMIs of 27, 32, 37, and 42 kg/m2, respectively. The association was stronger in never HRT users than in ever users: RRs were 1.90 (1.57–2.31) and 1.18 (95% CI, 1.06–1.31) with P for interaction = 0.003. In the piecewise model, the RR in never users was 20.70 (8.28–51.84) at BMI 42 kg/m2, compared with never users at normal BMI. The association was not affected by menopausal status (P = 0.34) or histologic type (P = 0.26). Conclusions: HRT use modifies the BMI-endometrial cancer risk association. Impact: These findings support the hypothesis that hyperestrogenia is an important mechanism underlying the BMI-endometrial cancer association, whilst the presence of residual risk in HRT users points to the role of additional systems. Cancer Epidemiol Biomarkers Prev; 19(12); 3119–30. ©2010 AACR.

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Crossref · 10.1158/1055-9965.epi-10-0832

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  • Established risk factors for endometrial cancer include obesity and premalignant lesions associated with endometrial hyperplasia, with oestrogen exposure considered a key driver of both endometrial hyperplasia and Type I endometrial cancer, which make up 75% of endometrial cancer cases.

    “Established risk factors for development of EC include obesity and the presence of premalignant lesions associated with endometrial hyperplasia [75,76], with oestrogen exposure considered a key driver of both endometrial hyperplasia and Type I EC that make up 75% of EC cases [76].”

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Authors
Crosbie, E. J., Zwahlen, M., Kitchener, H. C., Egger, M., & Renehan, A. G.
Affiliations
University of Bern (CH)
Venue
Cancer Epidemiology, Biomarkers & Prevention
Published
2010-12-01
Volume
19
Issue
12
Pages
3119-3130
ISSN
  • 1055-9965 (ISSN-L)
  • 1538-7755
OpenAlex
W2076975509
Cited by
321
References
85
Citations by year
2026: 21 · 2025: 19 · 2024: 15 · 2023: 24 · 2022: 25 · 2021: 25 · 2020: 26 · 2019: 15 · 2018: 19 · 2017: 20 · 2016: 21 · 2015: 33 · 2014: 23 · 2013: 21 · 2012: 9
FWCI
1.18
Type
journal article
Language
en
Open access
closed
Locations
  • Cancer Epidemiology Biomarkers & Prevention (publishedVersion)
  • PubMed (publishedVersion)
  • Research Explorer (The University of Manchester) (publishedVersion)
  • BORIS (University Library Bern) (submittedVersion)
Funders
National Institute for Health and Care Research (CL-2007-06-005)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Risks and Factors
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Menopause: Health Impacts and Treatments
  • Health Sciences › Medicine › Obstetrics and Gynecology › Endometrial and Cervical Cancer Treatments
Keywords
body mass index, endometrial cancer, hormone replacement therapy, obesity, menopausal status, histological subtypes, cancer risk modification, dose-response relationship, postmenopausal women, endometrial hyperplasia, endometrial adenocarcinoma, endometrioid carcinoma, serous carcinoma
MeSH terms
Female, Humans, Risk Factors, Cohort Studies, Body Mass Index, Endometrial Neoplasms, Hormone Replacement Therapy

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