RT Journal Article SR Electronic T1 Sulfotransferase1A1 and Risk of Postmenopausal Breast Cancer JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 2515 OP 2517 VO 25 IS 3C A1 PIIHA-LOTTA JEREVALL A1 AHMAD AHMADI A1 MALIN BERGMAN A1 OLLE STAL A1 STEN WINGREN YR 2005 UL http://ar.iiarjournals.org/content/25/3C/2515.abstract AB The detoxification enzyme sulfotransferase1A1 (SULT1A1) is implicated in the inactivation of estrogens and the activation of promutagens and procarcinogens. SULT1A1 activity varies among individuals, and this difference in phenotype is, in part, controlled by genetic polymorphism (Arg→His in codon 213). It is hypothesized that the His allele contributes to the risk of postmenopausal breast cancer. Frequencies of the Arg/His alleles were estimated in 229 postmenopausal breast cancer patients and 227 age-matched controls using a PCR-RFLP assay. Allele frequencies and genotype distributions were not statistically different between postmenopausal breast cancer patients and the population-based controls, i.e. neither of the alleles is associated with an increased risk of breast cancer in the present study.