Evidence map›Paper›PMID 33510439›Full record

ArticleBritish journal of cancer2021

Genetically predicted physical activity levels are associated with lower colorectal cancer risk: a Mendelian randomisation study.

Xiaomeng Zhang, Evropi Theodoratou, Xue Li, Susan M Farrington, Philip J Law, Peter Broderick, Marion Walker, Yann C Klimentidis, Jessica M B Rees, Richard S Houlston and 5 more

Open access · hybridAbstract read
In one paragraph

Article in British journal of cancer, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 2 pooled it
5.4field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 2 syntheses or guidelines pooled it, 38 citations in OpenAlex.

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  15. Exercise sustains the hallmarks of health.Journal of sport and health science · 2023
    Review
  16. Association between physical activity and cancer risk among Chinese adults: a 10-year prospective study.The international journal of behavioral nutrition and physical activity · 2022
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors at 7 institutions in 4 countries.

Xiaomeng Zhang *Centre for Global Health Research, Usher Institute, University of Edinburgh, Edinburgh, UK.
Evropi Theodoratou *Centre for Global Health Research, Usher Institute, University of Edinburgh, Edinburgh, UK.
Xue LiCentre for Global Health Research, Usher Institute, University of Edinburgh, Edinburgh, UK.
Susan M FarringtonColon Cancer Genetics Group, Cancer Research UK Edinburgh Centre and Medical Research Council Human Genetics Unit, Medical Research Council Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK.
Philip J LawDivision of Genetics and Epidemiology, The Institute of Cancer Research, London, UK.
Peter BroderickDivision of Genetics and Epidemiology, The Institute of Cancer Research, London, UK.
Marion WalkerColon Cancer Genetics Group, Cancer Research UK Edinburgh Centre and Medical Research Council Human Genetics Unit, Medical Research Council Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK.
Yann C KlimentidisDepartment of Epidemiology and Biostatistics, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ, USA.
Jessica M B ReesEdinburgh Clinical Trials Unit, Centre for Global Health Research, Usher Institute, University of Edinburgh, Edinburgh, UK.
Richard S HoulstonDivision of Genetics and Epidemiology, The Institute of Cancer Research, London, UK.
Ian P M TomlinsonCancer Research UK Edinburgh Centre, Medical Research Council Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK.
Stephen BurgessMRC Biostatistics Unit, University of Cambridge, Cambridge, UK.ORCID http://orcid.org/0000-0001-5365-8760
Harry CampbellCentre for Global Health Research, Usher Institute, University of Edinburgh, Edinburgh, UK.
Malcolm G DunlopColon Cancer Genetics Group, Cancer Research UK Edinburgh Centre and Medical Research Council Human Genetics Unit, Medical Research Council Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK. malcolm.dunlop@ed.ac.uk.ORCID http://orcid.org/0000-0002-3033-5851
Maria TimofeevaColon Cancer Genetics Group, Cancer Research UK Edinburgh Centre and Medical Research Council Human Genetics Unit, Medical Research Council Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK. mtimofeeva@health.sdu.dk.ORCID http://orcid.org/0000-0002-2503-4253
Edinburgh Cancer Research · GBInstitute of Cancer Research · GBUniversity of Edinburgh · GBSecond Affiliated Hospital of Zhejiang University · CNUniversity of Arizona · USUniversity of Cambridge · GBUniversity of Southern Denmark · DK

Funding

Data sharing: the Colon Cancer Family Registry CohortU01CA167551 · NCI · UNIVERSITY OF MELBOURNE · PI Daniel David BUCHANAN, Steven Gallinger · 2018 to 2026
$16.8M
Genetics at the Interface of Lipid and Glycemic TraitsR01HL136528 · NHLBI · UNIVERSITY OF ARIZONA · PI KLIMENTIDIS, YANN CHARLES · 2018 to 2020
$1.1M
Cancer Research UK 12076Cancer Research UK 18927Cancer Research UK 22804Cancer Research UK 25514Medical Research Council MC_PC_U127527198Medical Research Council MC_U127527198Medical Research Council MC_UU_00002/7Medical Research Council MC_UU_00007/1Medical Research Council MR/K018647/1NHLBI NIH HHS R01 HL136528Wellcome Trust 204623/Z/16/Z
6 · The paper itself

Abstract

backgroundWe conducted a Mendelian randomisation (MR) study to investigate whether physical activity (PA) causes a reduction of colorectal cancer risk and to understand the contributions of effects mediated through changes in body fat.

methodsCommon genetic variants associated with self-reported moderate-to-vigorous PA (MVPA), acceleration vector magnitude PA (AMPA) and sedentary time were used as instrumental variables. To control for confounding effects of obesity, we included instrumental variables for body mass index (BMI), body fat percentage, waist circumference and arm, trunk and leg fat ratios. We analysed the effect of these instrumental variables in a colorectal cancer genome-wide association study comprising 31,197 cases and 61,770 controls of European ancestry by applying two-sample and multivariable MR study designs.

resultsWe found decreased colorectal cancer risk for genetically represented measures of MVPA and AMPA that were additional to effects mediated through genetic measures of obesity. Odds ratio and 95% confidence interval (CI) per standard deviation increase in MVPA and AMPA was 0.56 (0.31, 1.01) and 0.60 (0.41, 0.88), respectively. No association has been found between sedentary time and colorectal cancer risk. The proportion of effect mediated through BMI was 2% (95% CI: 0, 14) and 32% (95% CI: 12, 46) for MVPA and AMPA, respectively.

conclusionThese findings provide strong evidence to reinforce public health measures on preventing colorectal cancer that promote PA at a population level regardless of body fatness.

Indexed as

AdiposityBody Mass IndexExerciseSedentary BehaviorColorectal NeoplasmsEuropeGenome-Wide Association StudyHumansMendelian Randomization AnalysisObesityPrognosisRisk Factors

Identifiers

PMID33510439
PMCPMC8007642
OpenAlexW3121679929

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.