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Tanja Stocks

Tanja Stocks

Researcher

Tanja Stocks

Risk of bladder cancer by disease severity in relation to metabolic factors and smoking : A prospective pooled cohort study of 800,000 men and women

Author

  • Stanley Teleka
  • Christel Häggström
  • Gabriele Nagel
  • Tone Bjørge
  • Jonas Manjer
  • Hanno Ulmer
  • Fredrik Liedberg
  • Sara Ghaderi
  • Alois Lang
  • Håkan Jonsson
  • Staffan Jahnson
  • Marju Orho-Melander
  • Steinar Tretli
  • Pär Stattin
  • Tanja Stocks

Summary, in English

Previous studies on metabolic factors and bladder cancer (BC) risk have shown inconsistent results and have commonly not investigated associations separately by sex, smoking, and tumor invasiveness. Among 811,633 participants in six European cohorts, we investigated sex-specific associations between body mass index (BMI), mid-blood pressure (BP, [systolic + diastolic]/2), plasma glucose, triglycerides, total cholesterol and risk of BC overall, non-muscle invasive BC (NMIBC) and muscle invasive BC (MIBC). Among men, we additionally assessed additive interactions between metabolic factors and smoking on BC risk. During follow-up, 2,983 men and 754 women were diagnosed with BC. Among men, triglycerides and BP were positively associated with BC risk overall (hazard ratio [HR] per standard deviation [SD]: 1.17 [95% confidence interval (CI) 1.06–1.27] and 1.09 [1.02–1.17], respectively), and among women, BMI was inversely associated with risk (HR: 0.90 [0.82–0.99]). The associations for BMI and BP differed between men and women (pinteraction ≤ 0.005). Among men, BMI, cholesterol and triglycerides were positively associated with risk for NMIBC (HRs: 1.09 [95% CI 1.01–1.18], 1.14 [1.02–1.25], and 1.30 [1.12–1.48] respectively), and BP was positively associated with MIBC (HR: 1.23 [1.02–1.49]). Among women, glucose was positively associated with MIBC (HR: 1.99 [1.04–3.81]). Apart from cholesterol, HRs for metabolic factors did not significantly differ between MIBC and NMIBC, and there were no interactions between smoking and metabolic factors on BC. Our study supports an involvement of metabolic aberrations in BC risk. Whilst some associations were significant only in certain sub-groups, there were generally no significant differences in associations by smoking or tumor invasiveness.

Department/s

  • EpiHealth: Epidemiology for Health
  • EXODIAB: Excellence of Diabetes Research in Sweden
  • Tumor microenvironment
  • BioCARE: Biomarkers in Cancer Medicine improving Health Care, Education and Innovation
  • Surgery
  • Urology - urothelial cancer, Malmö
  • Diabetes - Cardiovascular Disease
  • Register-based epidemiology

Publishing year

2018

Language

English

Pages

3071-3082

Publication/Series

International Journal of Cancer

Volume

143

Issue

12

Document type

Journal article

Publisher

John Wiley and Sons

Topic

  • Cancer and Oncology
  • Nutrition and Dietetics

Keywords

  • bladder cancer
  • metabolic factors
  • muscle-invasive bladder cancer
  • non-muscle invasive bladder cancer
  • smoking

Status

Published

Project

  • Metabolic factors, smoking and genetic variation in relation to bladder cancer risk and prognosis

Research group

  • Surgery
  • Urology - urothelial cancer, Malmö
  • Diabetes - Cardiovascular Disease
  • Register-based epidemiology

ISBN/ISSN/Other

  • ISSN: 0020-7136