Effects of SLCO1B1 polymorphisms on plasma estrogen concentrations in women with breast cancer receiving aromatase inhibitors exemestane and letrozole.

作者: Jacqueline M Dempsey , Kelley M Kidwell , Christina L Gersch , Andrea M Pesch , Zeruesenay Desta

DOI: 10.2217/PGS-2019-0020

关键词: Estrone sulfateExemestaneAromataseInternal medicineAromatase inhibitorMedicineBreast cancerEstroneEstrogenLetrozoleEndocrinology

摘要: Aim: This study tested for associations between SLCO1B1 polymorphisms and circulating estrogen levels in women with breast cancer treated letrozole or exemestane. Patients & methods: Postmenopausal hormone-receptor positive were genotyped SLCO1B1*5 (rs4149056) rs10841753. Pretreatment on-treatment plasma estrogens aromatase inhibitor (AI) concentrations measured. Regression analyses performed to test pharmacogenetic drug concentrations. Results: was associated elevated pretreatment estrone sulfate an increased risk of detectable after 3 months AI treatment. Conclusion: These findings suggest may have effect on estrogenic response treatment, therefore adversely impact the anticancer effectiveness these agents.

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