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Mendelian randomisation study of smoking exposure in relation to breast cancer risk
British Journal of Cancer ( IF 6.4 ) Pub Date : 2021-08-02 , DOI: 10.1038/s41416-021-01432-8
Hanla A Park 1, 2 , Sonja Neumeyer 1 , Kyriaki Michailidou 3, 4, 5 , Manjeet K Bolla 5 , Qin Wang 5 , Joe Dennis 5 , Thomas U Ahearn 6 , Irene L Andrulis 7, 8 , Hoda Anton-Culver 9 , Natalia N Antonenkova 10 , Volker Arndt 11 , Kristan J Aronson 12 , Annelie Augustinsson 13 , Adinda Baten 14 , Laura E Beane Freeman 6 , Heiko Becher 15, 16 , Matthias W Beckmann 17 , Sabine Behrens 1 , Javier Benitez 18, 19 , Marina Bermisheva 20 , Natalia V Bogdanova 10, 21, 22 , Stig E Bojesen 23, 24, 25 , Hiltrud Brauch 26, 27, 28 , Hermann Brenner 11, 29, 30 , Sara Y Brucker 31 , Barbara Burwinkel 32, 33 , Daniele Campa 1, 34 , Federico Canzian 35 , Jose E Castelao 36 , Stephen J Chanock 6 , Georgia Chenevix-Trench 37 , Christine L Clarke 38 , , Don M Conroy 39 , Fergus J Couch 40 , Angela Cox 41 , Simon S Cross 41, 42 , Kamila Czene 43 , Mary B Daly 44 , Peter Devilee 45, 46 , Thilo Dörk 22 , Isabel Dos-Santos-Silva 47 , Miriam Dwek 48 , Diana M Eccles 49 , A Heather Eliassen 50, 51 , Christoph Engel 52 , Mikael Eriksson 43 , D Gareth Evans 53, 54 , Peter A Fasching 17, 55 , Henrik Flyger 56 , Lin Fritschi 57 , Montserrat García-Closas 6 , José A García-Sáenz 58 , Mia M Gaudet 59 , Graham G Giles 60, 61, 62 , Gord Glendon 7 , Mark S Goldberg 63, 64 , David E Goldgar 65 , Anna González-Neira 19 , Mervi Grip 66 , Pascal Guénel 67 , Eric Hahnen 68, 69 , Christopher A Haiman 70 , Niclas Håkansson 71 , Per Hall 43, 72 , Ute Hamann 73 , Sileny Han 14 , Elaine F Harkness 74, 75, 76 , Steven N Hart 77 , Wei He 43 , Bernadette A M Heemskerk-Gerritsen 78 , John L Hopper 61 , David J Hunter 51, 79, 80 , , , Agnes Jager 78 , Anna Jakubowska 81, 82 , Esther M John 83, 84 , Audrey Jung 1 , Rudolf Kaaks 1 , Pooja Middha Kapoor 1, 2 , Renske Keeman 85 , Elza Khusnutdinova 20, 86 , Cari M Kitahara 87 , Linetta B Koppert 88 , Stella Koutros 6 , Vessela N Kristensen 89 , Allison W Kurian 83, 84 , James Lacey 90, 91 , Diether Lambrechts 92, 93 , Loic Le Marchand 94 , Wing-Yee Lo 26, 95 , Jan Lubiński 81 , Arto Mannermaa 96, 97, 98 , Mehdi Manoochehri 73 , Sara Margolin 72, 99 , Maria Elena Martinez 100, 101 , Dimitrios Mavroudis 102 , Alfons Meindl 103 , Usha Menon 104 , Roger L Milne 60, 61, 62 , Taru A Muranen 105 , Heli Nevanlinna 105 , William G Newman 53, 54 , Børge G Nordestgaard 23, 24, 25 , Kenneth Offit 106, 107 , Andrew F Olshan 108 , Håkan Olsson 13 , Tjoung-Won Park-Simon 22 , Paolo Peterlongo 109 , Julian Peto 47 , Dijana Plaseska-Karanfilska 110 , Nadege Presneau 48 , Paolo Radice 111 , Gad Rennert 112 , Hedy S Rennert 112 , Atocha Romero 113 , Emmanouil Saloustros 114 , Elinor J Sawyer 115 , Marjanka K Schmidt 85, 116 , Rita K Schmutzler 68, 69, 117 , Minouk J Schoemaker 118 , Lukas Schwentner 119 , Christopher Scott 77 , Mitul Shah 39 , Xiao-Ou Shu 120 , Jacques Simard 121 , Ann Smeets 122 , Melissa C Southey 60, 62, 123 , John J Spinelli 124, 125 , Victoria Stevens 59 , Anthony J Swerdlow 118, 126 , Rulla M Tamimi 50, 51, 79 , William J Tapper 49 , Jack A Taylor 127, 128 , Mary Beth Terry 129 , Ian Tomlinson 130, 131 , Melissa A Troester 108 , Thérèse Truong 67 , Celine M Vachon 132 , Elke M van Veen 53, 54 , Joseph Vijai 106, 107 , Sophia Wang 90, 91 , Camilla Wendt 99 , Robert Winqvist 133, 134 , Alicja Wolk 71, 135 , Argyrios Ziogas 9 , Alison M Dunning 39 , Paul D P Pharoah 5, 39 , Douglas F Easton 5, 39 , Wei Zheng 120 , Peter Kraft 51, 79 , Jenny Chang-Claude 1, 136
Affiliation  

Background

Despite a modest association between tobacco smoking and breast cancer risk reported by recent epidemiological studies, it is still equivocal whether smoking is causally related to breast cancer risk.

Methods

We applied Mendelian randomisation (MR) to evaluate a potential causal effect of cigarette smoking on breast cancer risk. Both individual-level data as well as summary statistics for 164 single-nucleotide polymorphisms (SNPs) reported in genome-wide association studies of lifetime smoking index (LSI) or cigarette per day (CPD) were used to obtain MR effect estimates. Data from 108,420 invasive breast cancer cases and 87,681 controls were used for the LSI analysis and for the CPD analysis conducted among ever-smokers from 26,147 cancer cases and 26,072 controls. Sensitivity analyses were conducted to address pleiotropy.

Results

Genetically predicted LSI was associated with increased breast cancer risk (OR 1.18 per SD, 95% CI: 1.07–1.30, P = 0.11 × 10–2), but there was no evidence of association for genetically predicted CPD (OR 1.02, 95% CI: 0.78–1.19, P = 0.85). The sensitivity analyses yielded similar results and showed no strong evidence of pleiotropic effect.

Conclusion

Our MR study provides supportive evidence for a potential causal association with breast cancer risk for lifetime smoking exposure but not cigarettes per day among smokers.



中文翻译:


吸烟暴露与乳腺癌风险相关的孟德尔随机研究


 背景


尽管最近的流行病学研究报告吸烟与乳腺癌风险之间存在适度的关联,但吸烟是否与乳腺癌风险存在因果关系仍然是模棱两可的。

 方法


我们应用孟德尔随机化 (MR) 来评估吸烟对乳腺癌风险的潜在因果影响。使用个体水平数据以及终生吸烟指数 (LSI) 或每天吸烟量 (CPD) 的全基因组关联研究中报告的 164 个单核苷酸多态性 (SNP) 的汇总统计数据来获得 MR 效应估计。来自 108,420 名浸润性乳腺癌病例和 87,681 名对照者的数据被用于 LSI 分析,以及对来自 26,147 名癌症病例和 26,072 名对照者的曾经吸烟者进行的 CPD 分析。进行敏感性分析以解决多效性。

 结果


基因预测的 LSI 与乳腺癌风险增加相关(OR 1.18/SD,95% CI:1.07–1.30, P = 0.11 × 10 –2 ),但没有证据表明与基因预测的 CPD 相关(OR 1.02,95% CI:0.78–1.19, P = 0.85)。敏感性分析得出了类似的结果,并且没有显示出多效性的有力证据。

 结论


我们的 MR 研究提供了支持性证据,证明吸烟者终生吸烟与乳腺癌风险存在潜在因果关系,但与吸烟者每天吸烟数量无关。

更新日期:2021-08-02
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