ArticleThe pharmacogenomics journal2018
Role of the UGT2B17 deletion in exemestane pharmacogenetics.
Article in The pharmacogenomics journal, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 16 citations in OpenAlex.
- The Evolution of Precision Anti-Doping From UGT2B17 Polymorphism Insights to Integrated Detection Frameworks.Drug testing and analysis · 2026Review
- Impact of combined UGT2B17 and GSTA1 genotypes on exemestane pharmacogenetics.Drug metabolism and disposition: the biological fate of chemicals · 2025Article
- Transcriptome Sequencing of Gingival Tissues from Impacted Third Molars Patients Reveals the Alterations of Gene Expression.Combinatorial chemistry & high throughput screening · 2024Article
- Influence of Glutathione-S-Transferase A1*B Allele on the Metabolism of the Aromatase Inhibitor, Exemestane, in Human Liver Cytosols and in Patients Treated With Exemestane.The Journal of pharmacology and experimental therapeutics · 2022Article
- Article
- The Uridine diphosphate (UDP)-glycosyltransferases (UGTs) superfamily: the role in tumor cell metabolism.Frontiers in oncology · 2022Review
- Characterization of Cytosolic GlutathioneDrug metabolism and disposition: the biological fate of chemicals · 2021Article
- Variation in the UGT2B17 genotype, exemestane metabolism and menopause-related toxicities in the CCTG MAP.3 trial.Breast cancer research and treatment · 2020Article
- Baseline estrogen levels in postmenopausal women participating in the MAP.3 breast cancer chemoprevention trial.Menopause (New York, N.Y.) · 2020Article
- Identification and Quantification of Novel Major Metabolites of the Steroidal Aromatase Inhibitor, Exemestane.Drug metabolism and disposition: the biological fate of chemicals · 2018Article
- Quantitative characterization of UDP-glucuronosyltransferase 2B17 in human liver and intestine and its role in testosterone first-pass metabolism.Biochemical pharmacology · 2018Article
- Hepatic Abundance and Activity of Androgen- and Drug-Metabolizing Enzyme UGT2B17 Are Associated with Genotype, Age, and Sex.Drug metabolism and disposition: the biological fate of chemicals · 2018Article
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
Abstract
Exemestane (EXE) is an aromatase inhibitor used for the prevention and treatment of breast cancer. The major metabolic pathway for EXE is reduction to form the active 17β-dihydro-EXE (17β-DHE) and subsequent glucuronidation to 17β-hydroxy-EXE-17-O-β-D-glucuronide (17β-DHE-Gluc) by UGT2B17. The aim of the present study was to determine the effects of UGT2B17 copy number variation on the levels of urinary and plasma 17β-DHE-Gluc and 17β-DHE in patients taking EXE. Ninety-six post-menopausal Caucasian breast cancer patients with ER+ breast tumors taking 25 mg EXE daily were recruited into this study. UGT2B17 copy number was determined by a real-time PCR copy number variant assay and the levels of EXE, 17β-DHE and 17β-DHE-Gluc were quantified by UPLC/MS in patients' urine and plasma. A 39-fold decrease (P<0.0001) in the levels of creatinine-adjusted urinary 17β-DHE-Gluc was observed among UGT2B17 (*2/*2) subjects vs subjects with the UGT2B17 (*1/*1) genotype. The plasma levels of 17β-DHE-Gluc was decreased 29-fold (P<0.0001) in subjects with the UGT2B17 (*2/*2) genotype vs subjects with UGT2B17 (*1/*1) genotype. The levels of plasma EXE-adjusted 17β-DHE was 28% higher (P=0.04) in subjects with the UGT2B17 (*2/*2) genotype vs subjects with the UGT2B17 (*1/*1) genotype. These data indicate that UGT2B17 is the major enzyme responsible for 17β-DHE-Gluc formation in vivo and that the UGT2B17 copy number variant may play a role in inter-individual variability in 17β-DHE levels in vivo.
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