Abstract
Background
Observational studies have found some evidence of an association between elevated blood pressure and prostate cancer risk; however, the results are inconclusive. We tested whether systolic blood pressure (SBP) influences prostate cancer risk and evaluated the effect of calcium channel blockers (CCB) on the disease using Mendelian randomization (MR) approach.
Methods
We used 278 genetic variants associated with SBP and 16 genetic variants in CCB genes as instrumental variables. Effect estimates were obtained from the UK Biobank sample of 142,995 males and from PRACTICAL consortium (79,148 cases and 61,106 controls).
Results
For each 10 mm Hg increase in SBP the estimated effect was OR 0.96 (0.90–1.01) for overall prostate cancer; and OR 0.92 (0.85–0.99) for aggressive prostate cancer. The MR-estimated effect of a 10 mm Hg- SBP lowering through CCB genetic variants was OR 1.22 (1.06–1.42) for all prostate cancers and OR 1.49 (1.18–1.89) for aggressive prostate cancer.
Conclusion
The results of our study did not support a causal relationship between SBP and prostate cancer; however, we found weak evidence of a protective effect of high SBP on aggressive prostate cancer and we found that blocking calcium channel receptors may increase prostate cancer risk.
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Data availability
This work has been conducted using the UK Biobank Resource. The UK Biobank is an open access resource and bona fide researchers can apply to use the UK Biobank dataset by registering and applying at http://ukbiobank.ac.uk/register-apply/. Further information is available from the corresponding author upon request.
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Acknowledgements
The authors thank the UK Biobank investigators and participants.
Funding
NKs salary is funded by a research grant from the World Cancer Research Fund (IIG_FULL_2020_01). SJL is supported by a Cancer Research UK 25 (C18281/A29019) programme grant (the Integrative Cancer Epidemiology Programme).
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All authors contributed to the study conception and design. Material preparation, data collection were performed by NK, EV, GK, SJL and DP. Analyses were performed by NK and DP. The first draft of the manuscript was written by NK and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Kazmi, N., Valeeva, E.V., Khasanova, G.R. et al. Blood pressure, calcium channel blockers, and the risk of prostate cancer: a Mendelian randomization study. Cancer Causes Control 34, 725–734 (2023). https://doi.org/10.1007/s10552-023-01712-z
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DOI: https://doi.org/10.1007/s10552-023-01712-z