Journal article

Pro-inflammatory fatty acid profile and colorectal cancer risk: A Mendelian randomisation analysis

S May-Wilson, A Sud, PJ Law, K Palin, S Tuupanen, A Gylfe, UA Hänninen, T Cajuso, T Tanskanen, J Kondelin, E Kaasinen, AP Sarin, JG Eriksson, H Rissanen, P Knekt, E Pukkala, P Jousilahti, V Salomaa, S Ripatti, A Palotie Show all

European Journal of Cancer | ELSEVIER SCI LTD | Published : 2017

Abstract

Background While dietary fat has been established as a risk factor for colorectal cancer (CRC), associations between fatty acids (FAs) and CRC have been inconsistent. Using Mendelian randomisation (MR), we sought to evaluate associations between polyunsaturated (PUFA), monounsaturated (MUFA) and saturated FAs (SFAs) and CRC risk. Methods We analysed genotype data on 9254 CRC cases and 18,386 controls of European ancestry. Externally weighted polygenic risk scores were generated and used to evaluate associations with CRC per one standard deviation increase in genetically defined plasma FA levels. Results Risk reduction was observed for oleic and palmitoleic MUFAs (OROA = 0.77, 95% CI: 0.65–0...

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Awarded by University of Southern California


Funding Acknowledgements

At the Institute of Cancer Research, this work was supported by Cancer Research UK (C1298/A8362 - Bobby Moore Fund for Cancer Research UK). Additional support was provided by the National Cancer Research Network. S. M-W was in receipt of a PhD studentship from The Institute of Cancer Research. A. S. is supported by a clinical fellowship from Cancer Research UK. In Edinburgh the work was supported by Programme Grant funding from Cancer Research UK (C348/A12076). In Oxford additional funding was provided by the Oxford Comprehensive Biomedical Research Centre and the EU FP7 CHIBCHA grant. Core infrastructure support to the Wellcome Trust Centre for Human Genetics, Oxford was provided by grant (090532/Z/09/Z). We are grateful to many colleagues within UK Clinical Genetics Departments (for CORGI) and to many collaborators who participated in the VICTOR and QUASAR2 trials. We also thank colleagues from the UK National Cancer Research Network (for NSCCG). Support from the European Union (FP7/207-2013, grant 258236) and FP7 collaborative project SYSCOL and COST Action in the UK is also acknowledged (BM1206). The COIN and COIN-B trials were funded by Cancer Research UK and the Medical Research Council and were conducted with the support of the National Institute of Health Research Cancer Research Network. COIN and COIN-B translational studies were supported by the Bobby Moore Fund from Cancer Research UK, Tenovus, the Kidani Trust, Cancer Research Wales and the National Institute for Social Care and Health Research Cancer Genetics Biomedical Research Unit (2011-2014). N.A.A., B.F.M. and S.M.W. were funded and supported by KFSHRC. In Finland, this work was supported by grants from the Academy of Finland (Finnish Center of Excellence Program 2012-2017, 250345), the Jane and Aatos Erkko Foundation, the Finnish Cancer Society (K.P.), the European Research Council [ERC; 268648], the Sigrid Juselius Foundation, SYSCOL, the Nordic Information for Action eScience Center (NIASC), the Nordic Center of Excellence financed by NordForsk (project 62721, K.P.) and State Research Funding of Kuopio University Hospital (B1401). We acknowledge the computational resources provided by the ELIXIR node, hosted at the CSCeIT Center for Science, Finland, and funded by the Academy of Finland (grants 271642 and 263164), the Ministry of Education and Culture, Finland. V.S. was supported by the Finnish Academy (grant number 139635). Sample collection and genotyping in the Finnish Twin Cohort has been supported by the Wellcome Trust Sanger Institute, ENGAGE - European Network for Genetic and Genomic Epidemiology, FP7-HEALTH-F4-2007 (201413), the National Institute of Alcohol Abuse and Alcoholism [grants AA-12502 and AA-00145 to Richard J Rose and K02AA018755 to Danielle M Dick] and the Academy of Finland (100499, 205585, 265240 and 263278 to J.K.). The work of the Colon Cancer Family Registry (CCFR) was supported by from the National Cancer Institute (UM1 CA167551), National Institutes of Health and through cooperative agreements with the following CCFR centers: Australasian Colorectal Cancer Family Registry (U01 CA074778, U01/U24 CA097735), USC Consortium Colorectal Cancer Family Registry (U01/U24 CA074799), Mayo Clinic Cooperative Familial Registry for Colon Cancer Studies (U01/U24 CA074800), Ontario Familial Colorectal Cancer Registry (U01/U24 CA074783), Seattle Colorectal Cancer Family Registry (U01/U24 CA074794), and University of Hawaii Colorectal Cancer Family Registry (U01/U24 CA074806). r The CCFR Illumina GWAS was supported by funding from the National Cancer Institute, National Institutes of Health (U01 CA122839 and R01 CA143237 to G.C.). Additional support was provided from the Surveillance, Epidemiology and End Results (SEER) Program of the National Cancer Institute to Fred Hutchinson Cancer Research Center (Control Nos. N01-CN-67009, N01-PC-35142 and Contract No. HHSN2612013000121), the Hawai'i Department of Health (Control Nos. N01-PC-67001, N01-PC-35137, and Contract No. HHSN26120100037C), and the California Department of Public Health (contract HHSN261201000035C) awarded to the University of Southern California. The content of this manuscript does not necessarily reflect the views or policies of the National Cancer Institute, any SEER program or any of the collaborating centres in the CCFR, nor does mention of trade names, commercial products, or organisations imply endorsement by the US Government, SEER or the CCFR.