|Grant Number:||5R01CA072520-09 Interpret this number|
|Primary Investigator:||Le Marchand, Loic|
|Organization:||University Of Hawaii At Manoa|
|Project Title:||Diet, Genetic Susceptibility and Colorectal Neoplasia|
DESCRIPTION (provided by applicant): Smoking, overnutrition and a high red meat and low folate and calcium diet have been associated with colorectal cancer (CRC) and adenoma. The epidemiologic features of CRC among migrants and native populations in Hawaii suggest the modifying effects of genetic susceptibility factors on most of these associations. Taking advantage of the genetic and dietary diversity of our population, we have made good progress in investigating specific gene variants that affect one's capacity to bioactivate dietary carcinogens or utilize one-carbon groups for DNA synthesis or methylation. We also showed that a genetic variant associated with lower circulating IGF-I hormones may protect against colorectal neoplasia. We seek to renew grant 1 -R01-CA72520 to extend a case-control study of colorectal adenoma in order to test these gene-diet interactions in a large series of adenoma cases and controls, as well as to examine several new variants in these pathways in relation to adenoma, as well as CRC using existing samples/data from a companion study. New aims also include discovering new SNPs and mapping haplotypes in major genes related to the activation of heterocyclic amines and assessing population stratification in our subjects using random genetic markers. A diet and lifestyle questionnaire will be administered in person to another 904 new adenoma cases and 904 endoscopically normal controls (for a total study sample of 1,204 adenoma cases and 1,404 controls) frequency-matched on age, sex, race/ethnicity, date and mode of endoscopy. Usual consumption of meat and fish items prepared by high-temperature methods and doneness of meats will be assessed, in addition to estimating the total intake of energy, nutrients, and other dietary components. Subjects will be phenotyped for several P450 enzymes by caffeine challenge. A blood sample will also be collected to genotype subjects for variants in a number of genes related to growth hormones, carcinogen activation and folate metabolism. Sequencing of genes related to heterocyclic amine activation in colorectal cancer patients of Japanese, Caucasian, African American, Latino or Native Hawaiian origin will allow for the construction of haplotypes. Correlations with CYP1A2 phenotype will help to select functional haplotypes which will then be tested for associations with adenoma and colorectal cancer. Genotyping for random markers will permit to exclude residual confounding by ethnicity.
Variations in bitter-taste receptor genes, dietary intake, and colorectal adenoma risk.
Authors: Schembre SM, Cheng I, Wilkens LR, Albright CL, Marchand le L
Source: Nutr Cancer, 2013;65(7), p. 982-90.
EPub date: 2013 Oct 1.
Heterocyclic amine intake, smoking, cytochrome P450 1A2 and N-acetylation phenotypes, and risk of colorectal adenoma in a multiethnic population.
Authors: Voutsinas J, Wilkens LR, Franke A, Vogt TM, Yokochi LA, Decker R, Le Marchand L
Source: Gut, 2013 Mar;62(3), p. 416-22.
EPub date: 2012 May 24.
Metabolism and biomarkers of heterocyclic aromatic amines in molecular epidemiology studies: lessons learned from aromatic amines.
Authors: Turesky RJ, Le Marchand L
Source: Chem Res Toxicol, 2011 Aug 15;24(8), p. 1169-214.
EPub date: 2011 Jun 20.
Association of plasma vitamin B6 with risk of colorectal adenoma in a multiethnic case-control study.
Authors: Le Marchand L, Wang H, Selhub J, Vogt TM, Yokochi L, Decker R
Source: Cancer Causes Control, 2011 Jun;22(6), p. 929-36.
EPub date: 2011 Mar 25.
Genetic variation in the bioactivation pathway for polycyclic hydrocarbons and heterocyclic amines in relation to risk of colorectal neoplasia.
Authors: Wang H, Yamamoto JF, Caberto C, Saltzman B, Decker R, Vogt TM, Yokochi L, Chanock S, Wilkens LR, Le Marchand L
Source: Carcinogenesis, 2011 Feb;32(2), p. 203-9.
EPub date: 2010 Nov 16.
Generalizability and epidemiologic characterization of eleven colorectal cancer GWAS hits in multiple populations.
Authors: He J, Wilkens LR, Stram DO, Kolonel LN, Henderson BE, Wu AH, Le Marchand L, Haiman CA
Source: Cancer Epidemiol Biomarkers Prev, 2011 Jan;20(1), p. 70-81.
EPub date: 2010 Nov 11.
Associations of plasma C-peptide and IGFBP-1 levels with risk of colorectal adenoma in a multiethnic population.
Authors: Le Marchand L, Wang H, Rinaldi S, Kaaks R, Vogt TM, Yokochi L, Decker R
Source: Cancer Epidemiol Biomarkers Prev, 2010 Jun;19(6), p. 1471-7.
EPub date: 2010 May 25.
Serum CRP and IL-6, genetic variants and risk of colorectal adenoma in a multiethnic population.
Authors: Ognjanovic S, Yamamoto J, Saltzman B, Franke A, Ognjanovic M, Yokochi L, Vogt T, Decker R, Le Marchand L
Source: Cancer Causes Control, 2010 Jul;21(7), p. 1131-8.
EPub date: 2010 Mar 24.
Association of genetic variation in the transforming growth factor beta-1 gene with serum levels and risk of colorectal neoplasia.
Authors: Saltzman BS, Yamamoto JF, Decker R, Yokochi L, Theriault AG, Vogt TM, Le Marchand L
Source: Cancer Res, 2008 Feb 15;68(4), p. 1236-44.
Design considerations for genomic association studies: importance of gene-environment interactions.
Authors: Le Marchand L, Wilkens LR
Source: Cancer Epidemiol Biomarkers Prev, 2008 Feb;17(2), p. 263-7.
Smoking and colorectal cancer: different effects by type of cigarettes?
Authors: Lüchtenborg M, White KK, Wilkens L, Kolonel LN, Le Marchand L
Source: Cancer Epidemiol Biomarkers Prev, 2007 Jul;16(7), p. 1341-7.
A common genetic risk factor for colorectal and prostate cancer.
Authors: Haiman CA, Le Marchand L, Yamamato J, Stram DO, Sheng X, Kolonel LN, Wu AH, Reich D, Henderson BE
Source: Nat Genet, 2007 Aug;39(8), p. 954-6.
EPub date: 2007 Jul 8.
NAT2, meat consumption and colorectal cancer incidence: an ecological study among 27 countries.
Authors: Ognjanovic S, Yamamoto J, Maskarinec G, Le Marchand L
Source: Cancer Causes Control, 2006 Nov;17(9), p. 1175-82.
The predominance of the environment over genes in cancer causation: implications for genetic epidemiology.
Authors: Le Marchand L
Source: Cancer Epidemiol Biomarkers Prev, 2005 May;14(5), p. 1037-9.
Association of the cyclin D1 A870G polymorphism with advanced colorectal cancer.
Authors: Le Marchand L, Seifried A, Lum-Jones A, Donlon T, Wilkens LR
Source: JAMA, 2003 Dec 3;290(21), p. 2843-8.
Feasibility of collecting buccal cell DNA by mail in a cohort study.
Authors: Le Marchand L, Lum-Jones A, Saltzman B, Visaya V, Nomura AM, Kolonel LN
Source: Cancer Epidemiol Biomarkers Prev, 2001 Jun;10(6), p. 701-3.