Mendelian randomisation analysis strongly implicates adiposity with risk of developing colorectal cancer.
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ICR Authors
Authors
Jarvis, D
Mitchell, JS
Law, PJ
Palin, K
Tuupanen, S
Gylfe, A
Hänninen, UA
Cajuso, T
Tanskanen, T
Kondelin, J
Kaasinen, E
Sarin, A-P
Kaprio, J
Eriksson, JG
Rissanen, H
Knekt, P
Pukkala, E
Jousilahti, P
Salomaa, V
Ripatti, S
Palotie, A
Järvinen, H
Renkonen-Sinisalo, L
Lepistö, A
Böhm, J
Meklin, J-P
Al-Tassan, NA
Palles, C
Martin, L
Barclay, E
Farrington, SM
Timofeeva, MN
Meyer, BF
Wakil, SM
Campbell, H
Smith, CG
Idziaszczyk, S
Maughan, TS
Kaplan, R
Kerr, R
Kerr, D
Buchanan, DD
Win, AK
Hopper, JL
Jenkins, MA
Lindor, NM
Newcomb, PA
Gallinger, S
Conti, D
Schumacher, F
Casey, G
Taipale, J
Aaltonen, LA
Cheadle, JP
Dunlop, MG
Tomlinson, IP
Houlston, RS
Mitchell, JS
Law, PJ
Palin, K
Tuupanen, S
Gylfe, A
Hänninen, UA
Cajuso, T
Tanskanen, T
Kondelin, J
Kaasinen, E
Sarin, A-P
Kaprio, J
Eriksson, JG
Rissanen, H
Knekt, P
Pukkala, E
Jousilahti, P
Salomaa, V
Ripatti, S
Palotie, A
Järvinen, H
Renkonen-Sinisalo, L
Lepistö, A
Böhm, J
Meklin, J-P
Al-Tassan, NA
Palles, C
Martin, L
Barclay, E
Farrington, SM
Timofeeva, MN
Meyer, BF
Wakil, SM
Campbell, H
Smith, CG
Idziaszczyk, S
Maughan, TS
Kaplan, R
Kerr, R
Kerr, D
Buchanan, DD
Win, AK
Hopper, JL
Jenkins, MA
Lindor, NM
Newcomb, PA
Gallinger, S
Conti, D
Schumacher, F
Casey, G
Taipale, J
Aaltonen, LA
Cheadle, JP
Dunlop, MG
Tomlinson, IP
Houlston, RS
Document Type
Journal Article
Date
2016-07-12
Date Accepted
2016-05-14
Abstract
BACKGROUND: Observational studies have associated adiposity with an increased risk of colorectal cancer (CRC). However, such studies do not establish a causal relationship. To minimise bias from confounding we performed a Mendelian randomisation (MR) analysis to examine the relationship between adiposity and CRC. METHODS: We used SNPs associated with adult body mass index (BMI), waist-hip ratio (WHR), childhood obesity and birth weight as instrumental variables in a MR analysis of 9254 CRC cases and 18 386 controls. RESULTS: In the MR analysis, the odds ratios (ORs) of CRC risk per unit increase in BMI, WHR and childhood obesity were 1.23 (95% CI: 1.02-1.49, P=0.033), 1.59 (95% CI: 1.08-2.34, P=0.019) and 1.07 (95% CI: 1.03-1.13, P=0.018), respectively. There was no evidence for association between birth weight and CRC (OR=1.22, 95% CI: 0.89-1.67, P=0.22). Combining these data with a concurrent MR-based analysis for BMI and WHR with CRC risk (totalling to 18 190 cases, 27 617 controls) provided increased support, ORs for BMI and WHR were 1.26 (95% CI: 1.10-1.44, P=7.7 × 10(-4)) and 1.40 (95% CI: 1.14-1.72, P=1.2 × 10(-3)), respectively. CONCLUSIONS: These data provide further evidence for a strong causal relationship between adiposity and the risk of developing CRC highlighting the urgent need for prevention and treatment of adiposity.
Citation
British journal of cancer, 2016, 115 (2), pp. 266 - 272
Source Title
Publisher
NATURE PUBLISHING GROUP
ISSN
0007-0920
eISSN
1532-1827
Collections
Research Team
Cancer Genomics