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Investigating the possible causal role of coffee consumption with prostate cancer risk and progression using Mendelian randomization analysis

Taylor, AE, Martin, RM, Kote-Jarai, Z, Al Olama, AA, Benlloch, S, Muir, K, Giles, GG, Wiklund, F, Gronberg, H, Haiman, CA , Schleutker, J, Nordestgaard, BG, Travis, RC, Neal, D, Pashayan, N, Khaw, KT, Blott, W, Thibodeau, S, Maier, C, Kibel, AS, Cybulski, C, Cannon‐Albright, L, Brenner, H, Park, J, Kaneva, R, Batra, J, Teixeira, MR, Pandha, HS, PRACTICAL Consortium, ., Donovan, J and Munafo, MR (2016) Investigating the possible causal role of coffee consumption with prostate cancer risk and progression using Mendelian randomization analysis International Journal of Cancer.

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Abstract

Coffee consumption has been shown in some studies to be associated with lower risk of prostate cancer. However, it is unclear if this association is causal or due to confounding or reverse causality. We conducted a Mendelian randomisation analysis to investigate the causal effects of coffee consumption on prostate cancer risk and progression. We used two genetic variants robustly associated with caffeine intake (rs4410790 and rs2472297) as proxies for coffee consumption in a sample of 46,687 men of European ancestry from 25 studies in the PRACTICAL consortium. Associations between genetic variants and prostate cancer case status, stage and grade were assessed by logistic regression and with all-cause and prostate cancer-specific mortality using Cox proportional hazards regression. There was no clear evidence that a genetic risk score combining rs4410790 and rs2472297 was associated with prostate cancer risk (OR per additional coffee increasing allele: 1.01, 95% CI: 0.98,1.03) or having high-grade compared to low-grade disease (OR: 1.01, 95% CI: 0.97,1.04). There was some evidence that the genetic risk score was associated with higher odds of having nonlocalised compared to localised stage disease (OR: 1.03, 95% CI: 1.01, 1.06). Amongst men with prostate cancer, there was no clear association between the genetic risk score and all-cause mortality (HR: 1.00, 95% CI: 0.97,1.04) or prostate cancer-specific mortality (HR: 1.03, 95% CI: 0.98,1.08). These results, which should have less bias from confounding than observational estimates, are not consistent with a substantial effect of coffee consumption on reducing prostate cancer incidence or progression.

Item Type: Article
Subjects : Medical Science
Divisions : Faculty of Health and Medical Sciences > School of Biosciences and Medicine
Authors :
NameEmailORCID
Taylor, AEUNSPECIFIEDUNSPECIFIED
Martin, RMUNSPECIFIEDUNSPECIFIED
Kote-Jarai, ZUNSPECIFIEDUNSPECIFIED
Al Olama, AAUNSPECIFIEDUNSPECIFIED
Benlloch, SUNSPECIFIEDUNSPECIFIED
Muir, KUNSPECIFIEDUNSPECIFIED
Giles, GGUNSPECIFIEDUNSPECIFIED
Wiklund, FUNSPECIFIEDUNSPECIFIED
Gronberg, HUNSPECIFIEDUNSPECIFIED
Haiman, CAUNSPECIFIEDUNSPECIFIED
Schleutker, JUNSPECIFIEDUNSPECIFIED
Nordestgaard, BGUNSPECIFIEDUNSPECIFIED
Travis, RCUNSPECIFIEDUNSPECIFIED
Neal, DUNSPECIFIEDUNSPECIFIED
Pashayan, NUNSPECIFIEDUNSPECIFIED
Khaw, KTUNSPECIFIEDUNSPECIFIED
Blott, WUNSPECIFIEDUNSPECIFIED
Thibodeau, SUNSPECIFIEDUNSPECIFIED
Maier, CUNSPECIFIEDUNSPECIFIED
Kibel, ASUNSPECIFIEDUNSPECIFIED
Cybulski, CUNSPECIFIEDUNSPECIFIED
Cannon‐Albright, LUNSPECIFIEDUNSPECIFIED
Brenner, HUNSPECIFIEDUNSPECIFIED
Park, JUNSPECIFIEDUNSPECIFIED
Kaneva, RUNSPECIFIEDUNSPECIFIED
Batra, JUNSPECIFIEDUNSPECIFIED
Teixeira, MRUNSPECIFIEDUNSPECIFIED
Pandha, HSUNSPECIFIEDUNSPECIFIED
PRACTICAL Consortium, .UNSPECIFIEDUNSPECIFIED
Donovan, JUNSPECIFIEDUNSPECIFIED
Munafo, MRUNSPECIFIEDUNSPECIFIED
Date : 26 October 2016
Identification Number : 10.1002/ijc.30462
Copyright Disclaimer : © 2016 The Authors International Journal of Cancer published by John Wiley & Sons Ltd on behalf of UICC This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Depositing User : Symplectic Elements
Date Deposited : 28 Oct 2016 13:30
Last Modified : 31 Oct 2017 18:52
URI: http://epubs.surrey.ac.uk/id/eprint/812664

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