Abstract 4945
Background
Inflammation may promote prostate cancer development, which can be characterized by elevated circulating levels of inflammation markers, such as high-sensitivity C-reactive protein (hs-CRP). Whether pre-diagnostic measurements of hs-CRP are associated with prostate cancer remains unknown.
Methods
In the Prostate Cancer Study throughout life (PROCA-life), a total of 11 064 initially healthy men, who participated in the Tromsø Study between 1994 and 2008, were included. Pre-diagnostic hs-CRP was assessed and height and weight were measured at study entry. During a mean follow-up time of 14.2 years, a total of 459 men developed histological verified prostate cancer and detailed medical and histological records were obtained.
Results
At study entry, the cohort participants had a mean age of 60.5, mean level of hs-CRP of 2.18 mg/l and a mean body mass index (BMI) of 25.8 kg/m2. The 459 prostate cancer cases identified had a mean age at diagnosis of 72.0 years. Among normal weighted men (BMI<25kg/m2), we observed a positive linear relationship between pre-diagnostic hs-CRP levels and prostate cancer risk after adjustments, both when using single and repeated measurements of hs-CRP, with hazard ratio 1.09 (95% CI 1.03-1.14) and 1.08 (95% CI 1.01-1.16), respectively. This relationship was not present in the overweight (BMI 25-30 kg/m2) or obese (BMI>30kg/m2) group.
Conclusions
Our study supports the hypothesis that inflammation may play a role in prostate cancer development, but this association may vary by body composition.
Clinical trial identification
Legal entity responsible for the study
University of Tromsø.
Funding
University of Tromsø.
Editorial Acknowledgement
Disclosure
All authors have declared no conflicts of interest.