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ABSTRACT: Background
To prospectively examine the association between diabetes and risk of prostate cancer defined by clinical and molecular features.Methods
A total of 49,392 men from the Health Professionals Follow-up Study (HPFS) were followed from 1986 to 2014. Data on self-reported diabetes were collected at baseline and updated biennially. Clinical features of prostate cancer included localised, advanced, lethal, low-grade, intermediate-grade, and high-grade. Molecular features included TMPRSS2: ERG and PTEN subtypes. Cox proportional hazards regression models were used to evaluate the association between diabetes and incidence of subtype-specific prostate cancer.Results
During 28 years of follow-up, we documented 6733 incident prostate cancer cases. Relative to men free from diabetes, men with diabetes had lower risks of total (HR: 0.82, 95% CI: 0.75-0.90), localised (HR: 0.82, 95% CI: 0.74-0.92), low-and intermediate-grade prostate cancer (HR: 0.77, 95% CI: 0.66-0.90; HR: 0.77, 95% CI: 0.65-0.91, respectively). For molecular subtypes, the HRs for ERG-negative and ERG-positive cases were 0.63 (0.42-0.95) and 0.72 (0.46-1.12); and for PTEN-intact and PTEN-loss cases were 0.69 (0.48-0.98) and 0.52 (0.19-1.41), respectively.Conclusion
Besides providing advanced evidence for the inverse association between diabetes and prostate cancer, this study is the first to report associations between diabetes and ERG/PTEN defined prostate cancers.
SUBMITTER: Feng X
PROVIDER: S-EPMC7435261 | biostudies-literature | 2020 Aug
REPOSITORIES: biostudies-literature

Feng Xiaoshuang X Song Mingyang M Preston Mark A MA Ma Wenjie W Hu Yang Y Pernar Claire H CH Stopsack Konrad H KH Ebot Ericka M EM Fu Benjamin C BC Zhang Yiwen Y Li Ni N Dai Min M Liu Lydia L Giovannucci Edward L EL Mucci Lorelei A LA
British journal of cancer 20200529 4
<h4>Background</h4>To prospectively examine the association between diabetes and risk of prostate cancer defined by clinical and molecular features.<h4>Methods</h4>A total of 49,392 men from the Health Professionals Follow-up Study (HPFS) were followed from 1986 to 2014. Data on self-reported diabetes were collected at baseline and updated biennially. Clinical features of prostate cancer included localised, advanced, lethal, low-grade, intermediate-grade, and high-grade. Molecular features inclu ...[more]