1. Physical activity, sedentary time and breast cancer risk: a Mendelian randomisation study
- Author
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Dixon-Suen, Suzanne C, Lewis, Sarah J, Martin, Richard M, English, Dallas R, Boyle, Terry, Giles, Graham G, Michailidou, Kyriaki, Bolla, Manjeet K, Wang, Qin, Dennis, Joe, Lush, Michael, Investigators, Abctb, Ahearn, Thomas U, Ambrosone, Christine B, Andrulis, Irene L, Anton-Culver, Hoda, Arndt, Volker, Aronson, Kristan J, Augustinsson, Annelie, Auvinen, Päivi, Beane Freeman, Laura E, Becher, Heiko, Beckmann, Matthias W, Behrens, Sabine, Bermisheva, Marina, Blomqvist, Carl, Bogdanova, Natalia V, Bojesen, Stig E, Bonanni, Bernardo, Brenner, Hermann, Brüning, Thomas, Buys, Saundra S, Camp, Nicola J, Campa, Daniele, Canzian, Federico, Castelao, Jose E, Cessna, Melissa H, Chang-Claude, Jenny, Chanock, Stephen J, Clarke, Christine L, Conroy, Don M, Couch, Fergus J, Cox, Angela, Cross, Simon S, Czene, Kamila, Daly, Mary B, Devilee, Peter, Dörk, Thilo, Dwek, Miriam, Eccles, Diana M, Eliassen, A Heather, Engel, Christoph, Eriksson, Mikael, Evans, D Gareth, Fasching, Peter A, Fletcher, Olivia, Flyger, Henrik, Fritschi, Lin, Gabrielson, Marike, Gago-Dominguez, Manuela, García-Closas, Montserrat, García-Sáenz, José A, Goldberg, Mark S, Guénel, Pascal, Gündert, Melanie, Hahnen, Eric, Haiman, Christopher A, Häberle, Lothar, Håkansson, Niclas, Hall, Per, Hamann, Ute, Hart, Steven N, Harvie, Michelle, Hillemanns, Peter, Hollestelle, Antoinette, Hooning, Maartje J, Hoppe, Reiner, Hopper, John, Howell, Anthony, Hunter, David J, Jakubowska, Anna, Janni, Wolfgang, John, Esther M, Jung, Audrey, Kaaks, Rudolf, Keeman, Renske, Kitahara, Cari M, Koutros, Stella, Kraft, Peter, Kristensen, Vessela N, Kubelka-Sabit, Katerina, Kurian, Allison W, Lacey, James V, Lambrechts, Diether, Le Marchand, Loic, Lindblom, Annika, Loibl, Sibylle, Lubiński, Jan, Mannermaa, Arto, Manoochehri, Mehdi, Margolin, Sara, Martinez, Maria Elena, Mavroudis, Dimitrios, Menon, Usha, Mulligan, Anna Marie, Murphy, Rachel A, Collaborators, Nbcs, Nevanlinna, Heli, Nevelsteen, Ines, Newman, William G, Offit, Kenneth, Olshan, Andrew F, Olsson, Håkan, Orr, Nick, Patel, Alpa, Peto, Julian, Plaseska-Karanfilska, Dijana, Presneau, Nadege, Rack, Brigitte, Radice, Paolo, Rees-Punia, Erika, Rennert, Gad, Rennert, Hedy S, Romero, Atocha, Saloustros, Emmanouil, Sandler, Dale P, Schmidt, Marjanka K, Schmutzler, Rita K, Schwentner, Lukas, Scott, Christopher, Shah, Mitul, Shu, Xiao-Ou, Simard, Jacques, Southey, Melissa C, Stone, Jennifer, Surowy, Harald, Swerdlow, Anthony J, Tamimi, Rulla M, Tapper, William J, Taylor, Jack A, Terry, Mary Beth, Tollenaar, Rob AEM, Troester, Melissa A, Truong, Thérèse, Untch, Michael, Vachon, Celine M, Joseph, Vijai, Wappenschmidt, Barbara, Weinberg, Clarice R, Wolk, Alicja, Yannoukakos, Drakoulis, Zheng, Wei, Ziogas, Argyrios, Dunning, Alison M, Pharoah, Paul DP, Easton, Douglas F, Milne, Roger L, Lynch, Brigid M, Breast Cancer Association Consortium, Law and Economics, Medical Oncology, Dixon-Suen, Suzanne C [0000-0003-3714-8386], Boyle, Terry [0000-0001-6741-330X], Romero, Atocha [0000-0002-1634-7397], Lynch, Brigid M [0000-0001-8060-547X], Apollo - University of Cambridge Repository, Dixon-Suen, Suzanne C, Lewis, Sarah J, Martin, Richard M, English, Dallas R, Boyle, Terry, Lynch, Brigid M, ABCTB Investigators, NBCS Collaborators, and Breast Canc Assoc Consortium
- Subjects
Breast Neoplasms ,Physical Therapy, Sports Therapy and Rehabilitation ,Polymorphism, Single Nucleotide ,Article ,Basic medicine ,breast cancer risk ,SDG 3 - Good Health and Well-being ,Risk Factors ,sedentary behaviour ,Genetics ,Humans ,Orthopedics and Sports Medicine ,Breast ,causal inference ,Exercise ,Manchester Cancer Research Centre ,Physical activity ,genetic variants ,Breast Neoplasms/epidemiology ,ResearchInstitutes_Networks_Beacons/mcrc ,General Medicine ,Mendelian Randomization Analysis ,FOS: Biological sciences ,Clinical medicine ,instruments ,physical inactivity ,Sedentary Behaviour ,Female ,ICEP ,Sedentary Behavior - Abstract
ObjectivesPhysical inactivity and sedentary behaviour are associated with higher breast cancer risk in observational studies, but ascribing causality is difficult. Mendelian randomisation (MR) assesses causality by simulating randomised trial groups using genotype. We assessed whether lifelong physical activity or sedentary time, assessed using genotype, may be causally associated with breast cancer risk overall, pre/post-menopause, and by case-groups defined by tumour characteristics.MethodsWe performed two-sample inverse-variance-weighted MR using individual-level Breast Cancer Association Consortium case-control data from 130 957 European-ancestry women (69 838 invasive cases), and published UK Biobank data (n=91 105–377 234). Genetic instruments were single nucleotide polymorphisms (SNPs) associated in UK Biobank with wrist-worn accelerometer-measured overall physical activity (nsnps=5) or sedentary time (nsnps=6), or accelerometer-measured (nsnps=1) or self-reported (nsnps=5) vigorous physical activity.ResultsGreater genetically-predicted overall activity was associated with lower breast cancer overall risk (OR=0.59; 95% confidence interval (CI) 0.42 to 0.83 per-standard deviation (SD;~8 milligravities acceleration)) and for most case-groups. Genetically-predicted vigorous activity was associated with lower risk of pre/perimenopausal breast cancer (OR=0.62; 95% CI 0.45 to 0.87,≥3 vs. 0 self-reported days/week), with consistent estimates for most case-groups. Greater genetically-predicted sedentary time was associated with higher hormone-receptor-negative tumour risk (OR=1.77; 95% CI 1.07 to 2.92 per-SD (~7% time spent sedentary)), with elevated estimates for most case-groups. Results were robust to sensitivity analyses examining pleiotropy (including weighted-median-MR, MR-Egger).ConclusionOur study provides strong evidence that greater overall physical activity, greater vigorous activity, and lower sedentary time are likely to reduce breast cancer risk. More widespread adoption of active lifestyles may reduce the burden from the most common cancer in women.
- Published
- 2022