Mendelian Randomization of Circulating Polyunsaturated Fatty Acids and Colorectal Cancer Risk
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Mendelian Randomization of Circulating Polyunsaturated Fatty Acids and Colorectal Cancer Risk. / Khankari, Nikhil K; Banbury, Barbara L; Borges, Maria C; Haycock, Philip; Albanes, Demetrius; Arndt, Volker; Berndt, Sonja I; Bézieau, Stéphane; Brenner, Hermann; Campbell, Peter T; Casey, Graham; Chan, Andrew T; Chang-Claude, Jenny; Conti, David V; Cotterchio, Michelle; English, Dallas R; Figueiredo, Jane C; Giles, Graham G; Giovannucci, Edward L; Gunter, Marc J; Hampe, Jochen; Hoffmeister, Michael; Hopper, John L; Jenkins, Mark A; Joshi, Amit D; Marchand, Loic Le; Lemire, Mathieu; Li, Christopher I; Li, Li; Lindblom, Annika; Martín, Vicente; Moreno, Victor; Newcomb, Polly A; Offit, Kenneth; Pharoah, Paul D P; Rennert, Gad; Sakoda, Lori C; Schafmayer, Clemens; Schmit, Stephanie L; Slattery, Martha L; Song, Mingyang; Thibodeau, Stephen N; Ulrich, Cornelia M; Weinstein, Stephanie J; White, Emily; Win, Aung Ko; Wolk, Alicja; Woods, Michael O; Wu, Anna H; Cai, Qiuyin; Denny, Joshua C; Edwards, Todd L; Murff, Harvey J; Gruber, Stephen B; Zheng, Wei.
In: CANCER EPIDEM BIOMAR, Vol. 29, No. 4, 04.2020, p. 860-870.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Mendelian Randomization of Circulating Polyunsaturated Fatty Acids and Colorectal Cancer Risk
AU - Khankari, Nikhil K
AU - Banbury, Barbara L
AU - Borges, Maria C
AU - Haycock, Philip
AU - Albanes, Demetrius
AU - Arndt, Volker
AU - Berndt, Sonja I
AU - Bézieau, Stéphane
AU - Brenner, Hermann
AU - Campbell, Peter T
AU - Casey, Graham
AU - Chan, Andrew T
AU - Chang-Claude, Jenny
AU - Conti, David V
AU - Cotterchio, Michelle
AU - English, Dallas R
AU - Figueiredo, Jane C
AU - Giles, Graham G
AU - Giovannucci, Edward L
AU - Gunter, Marc J
AU - Hampe, Jochen
AU - Hoffmeister, Michael
AU - Hopper, John L
AU - Jenkins, Mark A
AU - Joshi, Amit D
AU - Marchand, Loic Le
AU - Lemire, Mathieu
AU - Li, Christopher I
AU - Li, Li
AU - Lindblom, Annika
AU - Martín, Vicente
AU - Moreno, Victor
AU - Newcomb, Polly A
AU - Offit, Kenneth
AU - Pharoah, Paul D P
AU - Rennert, Gad
AU - Sakoda, Lori C
AU - Schafmayer, Clemens
AU - Schmit, Stephanie L
AU - Slattery, Martha L
AU - Song, Mingyang
AU - Thibodeau, Stephen N
AU - Ulrich, Cornelia M
AU - Weinstein, Stephanie J
AU - White, Emily
AU - Win, Aung Ko
AU - Wolk, Alicja
AU - Woods, Michael O
AU - Wu, Anna H
AU - Cai, Qiuyin
AU - Denny, Joshua C
AU - Edwards, Todd L
AU - Murff, Harvey J
AU - Gruber, Stephen B
AU - Zheng, Wei
N1 - ©2020 American Association for Cancer Research.
PY - 2020/4
Y1 - 2020/4
N2 - BACKGROUND: Results from epidemiologic studies examining polyunsaturated fatty acids (PUFA) and colorectal cancer risk are inconsistent. Mendelian randomization may strengthen causal inference from observational studies. Given their shared metabolic pathway, examining the combined effects of aspirin/NSAID use with PUFAs could help elucidate an association between PUFAs and colorectal cancer risk.METHODS: Information was leveraged from genome-wide association studies (GWAS) regarding PUFA-associated SNPs to create weighted genetic scores (wGS) representing genetically predicted circulating blood PUFAs for 11,016 non-Hispanic white colorectal cancer cases and 13,732 controls in the Genetics and Epidemiology of Colorectal Cancer Consortium (GECCO). Associations per SD increase in the wGS were estimated using unconditional logistic regression. Interactions between PUFA wGSs and aspirin/NSAID use on colorectal cancer risk were also examined.RESULTS: Modest colorectal cancer risk reductions were observed per SD increase in circulating linoleic acid [ORLA = 0.96; 95% confidence interval (CI) = 0.93-0.98; P = 5.2 × 10-4] and α-linolenic acid (ORALA = 0.95; 95% CI = 0.92-0.97; P = 5.4 × 10-5), whereas modest increased risks were observed for arachidonic (ORAA = 1.06; 95% CI = 1.03-1.08; P = 3.3 × 10-5), eicosapentaenoic (OREPA = 1.04; 95% CI = 1.01-1.07; P = 2.5 × 10-3), and docosapentaenoic acids (ORDPA = 1.03; 95% CI = 1.01-1.06; P = 1.2 × 10-2). Each of these effects was stronger among aspirin/NSAID nonusers in the stratified analyses.CONCLUSIONS: Our study suggests that higher circulating shorter-chain PUFAs (i.e., LA and ALA) were associated with reduced colorectal cancer risk, whereas longer-chain PUFAs (i.e., AA, EPA, and DPA) were associated with an increased colorectal cancer risk.IMPACT: The interaction of PUFAs with aspirin/NSAID use indicates a shared colorectal cancer inflammatory pathway. Future research should continue to improve PUFA genetic instruments to elucidate the independent effects of PUFAs on colorectal cancer.
AB - BACKGROUND: Results from epidemiologic studies examining polyunsaturated fatty acids (PUFA) and colorectal cancer risk are inconsistent. Mendelian randomization may strengthen causal inference from observational studies. Given their shared metabolic pathway, examining the combined effects of aspirin/NSAID use with PUFAs could help elucidate an association between PUFAs and colorectal cancer risk.METHODS: Information was leveraged from genome-wide association studies (GWAS) regarding PUFA-associated SNPs to create weighted genetic scores (wGS) representing genetically predicted circulating blood PUFAs for 11,016 non-Hispanic white colorectal cancer cases and 13,732 controls in the Genetics and Epidemiology of Colorectal Cancer Consortium (GECCO). Associations per SD increase in the wGS were estimated using unconditional logistic regression. Interactions between PUFA wGSs and aspirin/NSAID use on colorectal cancer risk were also examined.RESULTS: Modest colorectal cancer risk reductions were observed per SD increase in circulating linoleic acid [ORLA = 0.96; 95% confidence interval (CI) = 0.93-0.98; P = 5.2 × 10-4] and α-linolenic acid (ORALA = 0.95; 95% CI = 0.92-0.97; P = 5.4 × 10-5), whereas modest increased risks were observed for arachidonic (ORAA = 1.06; 95% CI = 1.03-1.08; P = 3.3 × 10-5), eicosapentaenoic (OREPA = 1.04; 95% CI = 1.01-1.07; P = 2.5 × 10-3), and docosapentaenoic acids (ORDPA = 1.03; 95% CI = 1.01-1.06; P = 1.2 × 10-2). Each of these effects was stronger among aspirin/NSAID nonusers in the stratified analyses.CONCLUSIONS: Our study suggests that higher circulating shorter-chain PUFAs (i.e., LA and ALA) were associated with reduced colorectal cancer risk, whereas longer-chain PUFAs (i.e., AA, EPA, and DPA) were associated with an increased colorectal cancer risk.IMPACT: The interaction of PUFAs with aspirin/NSAID use indicates a shared colorectal cancer inflammatory pathway. Future research should continue to improve PUFA genetic instruments to elucidate the independent effects of PUFAs on colorectal cancer.
U2 - 10.1158/1055-9965.EPI-19-0891
DO - 10.1158/1055-9965.EPI-19-0891
M3 - SCORING: Journal article
C2 - 32051193
VL - 29
SP - 860
EP - 870
JO - CANCER EPIDEM BIOMAR
JF - CANCER EPIDEM BIOMAR
SN - 1055-9965
IS - 4
ER -