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The association between a functional CYP1A1 polymorphism and colorectal neoplasia risk in post menopausal women.
Dig Dis Sci. 2010 Oct; 55(10):2965-70.DD

Abstract

BACKGROUND

The impact of estrogen on risk of colorectal neoplasia is uncertain. Carriers of the AA and CA genotype allele of the C4887A polymorphism of the CYP1A1 gene have enhanced estrogen metabolism relative to carriers of the CC genotype.

AIMS

This study examined whether this genetic marker of enhanced estrogen catabolism segregated with colorectal neoplasia (CRN) in postmenopausal women.

METHODS

We enrolled hormone negative postmenopausal women having screening or surveillance colonoscopy. Demographic and medical data were gathered. Blood was collected and analyzed for CYP1A1 polymorphisms of the C4887A allele by PCR-RFLP. Colonoscopy and pathology data were gathered from hospital databases.

RESULTS

One hundred sixty-eight women were enrolled in the study. Twenty-one subjects (12.5%) carried at least one A allele, and 147 subjects (87.5%) carried the CC alleles for the C4887A polymorphism of the CYP1A1 gene. Seventy subjects (41.7%) had CRN and 98 subjects (58.3%) did not have CRN. Of the subjects who carried the A allele, 57% had CRN as compared to 39% of those who carried the CC allele; the association was not statistically significant (P = 0.16). In a multivariate logistic regression analysis, age, BMI, current tobacco use, and first degree relative with CRN were independent risk factors for CRN but the C4887A polymorphisms remained not statistically significant (P = 0.35).

CONCLUSIONS

Carriers of the A allele of the C4887A polymorphism have enhanced estrogen catabolism and lower free estradiol. Our results suggest, however, that inherent estrogen metabolism as determined by C4887A polymorphisms is not associated with CRN risk.

Authors+Show Affiliations

Division of Gastroenterology, Washington University in St. Louis,St. Louis, MO, USA. dearly@im.wustl.eduNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural

Language

eng

PubMed ID

20094781

Citation

Early, Dayna S., et al. "The Association Between a Functional CYP1A1 Polymorphism and Colorectal Neoplasia Risk in Post Menopausal Women." Digestive Diseases and Sciences, vol. 55, no. 10, 2010, pp. 2965-70.
Early DS, Gao F, Ha CY, et al. The association between a functional CYP1A1 polymorphism and colorectal neoplasia risk in post menopausal women. Dig Dis Sci. 2010;55(10):2965-70.
Early, D. S., Gao, F., Ha, C. Y., Nagler, A., Cole, E., Gorbe, E., Napoli, N., & Armamento-Villareal, R. (2010). The association between a functional CYP1A1 polymorphism and colorectal neoplasia risk in post menopausal women. Digestive Diseases and Sciences, 55(10), 2965-70. https://doi.org/10.1007/s10620-009-1105-9
Early DS, et al. The Association Between a Functional CYP1A1 Polymorphism and Colorectal Neoplasia Risk in Post Menopausal Women. Dig Dis Sci. 2010;55(10):2965-70. PubMed PMID: 20094781.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The association between a functional CYP1A1 polymorphism and colorectal neoplasia risk in post menopausal women. AU - Early,Dayna S, AU - Gao,Feng, AU - Ha,Christina Y, AU - Nagler,Anne, AU - Cole,Elizabeth, AU - Gorbe,Elizabeth, AU - Napoli,Nicola, AU - Armamento-Villareal,Reina, Y1 - 2010/01/22/ PY - 2009/08/17/received PY - 2009/12/10/accepted PY - 2010/1/23/entrez PY - 2010/1/23/pubmed PY - 2010/10/15/medline SP - 2965 EP - 70 JF - Digestive diseases and sciences JO - Dig. Dis. Sci. VL - 55 IS - 10 N2 - BACKGROUND: The impact of estrogen on risk of colorectal neoplasia is uncertain. Carriers of the AA and CA genotype allele of the C4887A polymorphism of the CYP1A1 gene have enhanced estrogen metabolism relative to carriers of the CC genotype. AIMS: This study examined whether this genetic marker of enhanced estrogen catabolism segregated with colorectal neoplasia (CRN) in postmenopausal women. METHODS: We enrolled hormone negative postmenopausal women having screening or surveillance colonoscopy. Demographic and medical data were gathered. Blood was collected and analyzed for CYP1A1 polymorphisms of the C4887A allele by PCR-RFLP. Colonoscopy and pathology data were gathered from hospital databases. RESULTS: One hundred sixty-eight women were enrolled in the study. Twenty-one subjects (12.5%) carried at least one A allele, and 147 subjects (87.5%) carried the CC alleles for the C4887A polymorphism of the CYP1A1 gene. Seventy subjects (41.7%) had CRN and 98 subjects (58.3%) did not have CRN. Of the subjects who carried the A allele, 57% had CRN as compared to 39% of those who carried the CC allele; the association was not statistically significant (P = 0.16). In a multivariate logistic regression analysis, age, BMI, current tobacco use, and first degree relative with CRN were independent risk factors for CRN but the C4887A polymorphisms remained not statistically significant (P = 0.35). CONCLUSIONS: Carriers of the A allele of the C4887A polymorphism have enhanced estrogen catabolism and lower free estradiol. Our results suggest, however, that inherent estrogen metabolism as determined by C4887A polymorphisms is not associated with CRN risk. SN - 1573-2568 UR - https://www.unboundmedicine.com/medline/citation/20094781/The_association_between_a_functional_CYP1A1_polymorphism_and_colorectal_neoplasia_risk_in_post_menopausal_women_ L2 - https://doi.org/10.1007/s10620-009-1105-9 DB - PRIME DP - Unbound Medicine ER -