title: Variation in the CYP19A1 gene and risk of colon and rectal cancer.
abstract: CYP19A1, or aromatase, influences estrogen-metabolizing enzymes and may influence cancer risk. We examine variation in the CYP19A1 gene and risk of colorectal cancer using data from population-based case-control studies (colon n = 1,574 cases, 1,970 controls; rectal n = 791 cases, 999 controls). Four SNPs were statistically significantly associated with colon cancer and four were associated with rectal cancer. After adjustment for multiple comparisons, the AA genotype of rs12591359 was associated with an increased risk of colon cancer (OR 1.44 95% CI 1.16-1.80) and the AA genotype of rs2470144 was associated with a reduced risk of rectal cancer (OR 0.65 95% CI 0.50-0.84). Variants of CYP19A1 were associated with CIMP+ and CIMP+/KRAS2-mutated tumors. CT/TT genotypes of rs1961177 were significantly associated with an increased likelihood of a MSI+ colon tumor (OR 1.77 95% CI 1.26-2.37). We observed statistically significant interactions between genetic variation in NFκB1 and CYP19A1 for both colon and rectal cancer. Our data suggest the importance of CYP19A1 in the development of colon and rectal cancer and that estrogen may influence risk through an inflammation-related mechanism.
authors.affiliation: Department of Internal Medicine, University of Utah Health Sciences Center, 295 Chipeta Way, Salt Lake City, UT 84108, USA. marty.slattery@hsc.utah.edu
authors.forename: Martha L
authors.initials: ML
authors.lastname: Slattery
authors.forename: Abbie
authors.initials: A
authors.lastname: Lundgreen
authors.forename: Jennifer S
authors.initials: JS
authors.lastname: Herrick
authors.forename: Susan
authors.initials: S
authors.lastname: Kadlubar
authors.forename: Bette J
authors.initials: BJ
authors.lastname: Caan
authors.forename: John D
authors.initials: JD
authors.lastname: Potter
authors.forename: Roger K
authors.initials: RK
authors.lastname: Wolff
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001141:Aromatase / Q000235:genetics*; D002277:Carcinoma / Q000235:genetics*; D016022:Case-Control Studies; D003110:Colonic Neoplasms / Q000235:genetics*; D004967:Estrogens / Q000494:pharmacology; D005260:Female; D020022:Genetic Predisposition to Disease; D014644:Genetic Variation / Q000502:physiology; D005838:Genotype; D006801:Humans; D007249:Inflammation / Q000235:genetics; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D012004:Rectal Neoplasms / Q000235:genetics*; D012307:Risk Factors
chemical_list: D004967:Estrogens; D001141:Aromatase; C561410:CYP19A1 protein, human