PMID: 16637266Apr 28, 2006Paper

Association of polymorphisms in SULT1A1 and UGT1A1 Genes with breast cancer risk and phenotypes in Russian women

Molekuliarnaia biologiia
E G ShatalovaO O Favorova

Abstract

Estrogens are critical for breast cancer initiation and development. Sulfotransferase 1A1 (SULT1A1) and UDP-glucuronosyltransferase 1A1 (UGT1A1) conjugate and inactivate both estrogens and their metabolites, thus preventing estrogen-mediated mitosis and mutagenesis. SULT1A1 and UGT1A1 genes are both polymorphic, and different alleles encode functionally different allozymes. We hypothesize that low activity alleles SULT1A1*2 and UGT1A1*28 are associated with the higher risk for breast cancer and more severe breast tumor phenotypes. We performed a case-control study, which included 119 women of Russian ancestry with breast cancer and 121 age-matched Russian female controls. We used PCR, followed by pyrosequencing to determine SULT1A1 and UGT1A1 genotypes. Our data showed that UGT1A1*28 allele was presented at a higher frequency than the wild type UGT1A1*1 allele in breast cancer patients as compared to controls (p = 0.002, OR = 1.79, CI 1.23-2.63). Consistently, the frequency of genotypes that contain the UGT1A1*28 allele in the homozygous or heterozygous state was greater than the frequency of the wild type UGT1A1*1/*1 genotype in breast cancer patients as compared to controls (p = 0.003, OR = 4.00, CI 1.49-11.11 and p = 0.014, ...Continue Reading

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Oct 3, 2007·Breast Cancer Research and Treatment·Dezheng HuoOlufunmilayo I Olopade
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Apr 18, 2009·British Journal of Clinical Pharmacology·Jurij TronteljAles Mrhar

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