Bazedoxifene


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Bazedoxifene, used as bazedoxifene acetate, is a medication for bone problems and possibly (pending more study) for cancer.[2] It is a third-generation selective estrogen receptor modulator (SERM).[3] Since late 2013 it has had U.S. FDA approval for bazedoxifene as part of the combination drug Duavee in the prevention (not treatment) of postmenopausal osteoporosis. It is also being studied for possible treatment of breast cancer and pancreatic cancer.[4]

Bazedoxifene
Clinical data
Trade namesConbriza, Duavee, Duavive, Viviant
Other namesTSE-424; WAY-140424; WAY-TSE-424
AHFS/Drugs.comInternational Drug Names
License data
Routes of
administration		By mouth
ATC code
Legal status
Legal status
  • US: WARNING[1]
  • In general: ℞ (Prescription only)
Identifiers

  • 1-[4-[2-(azepan-1-yl)ethoxy]benzyl]-2-(4-hydroxyphenyl)-3-methyl-1H-indol-5-ol

CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
ChEMBL
PDB ligand
CompTox Dashboard (EPA)
ECHA InfoCard100.232.728 Edit this at Wikidata
Chemical and physical data
FormulaC30H34N2O3
Molar mass470.613 g·mol−1
3D model (JSmol)

  • Oc1ccc(cc1)c3c(c2cc(O)ccc2n3Cc5ccc(OCCN4CCCCCC4)cc5)C

  • InChI=1S/C30H34N2O3/c1-22-28-20-26(34)12-15-29(28)32(30(22)24-8-10-25(33)11-9-24)21-23-6-13-27(14-7-23)35-19-18-31-16-4-2-3-5-17-31/h6-15,20,33-34H,2-5,16-19,21H2,1H3 check

  • Key:UCJGJABZCDBEDK-UHFFFAOYSA-N check

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Bazedoxifene is used in the prevention of postmenopausal osteoporosis.[5]

Osteoporosis represents a major public health concern, especially as the number of postmenopausal women continues to rise. As a result, the need for innovative treatments has become increasingly important. Bazedoxifene (BZA) has emerged as a promising option for postmenopausal osteoporosis due to its demonstrated effectiveness in reducing bone loss and fractures, as well as its strong safety and tolerability profile. For women who cannot or prefer not to use bisphosphonates, owing to gastrointestinal side effects, safety risks, or contraindications, selective estrogen receptor modulators (SERMs) like BZA may serve as a suitable alternative. SERMs may also benefit younger women who are at higher risk of fractures and require long-term treatment.[5]

Furthermore, BZA has been paired with conjugated estrogens (TSEC) for both osteoporosis prevention and the management of menopausal symptoms. Given its positive safety record and efficacy in preventing fractures, BZA is becoming an increasingly important option within the current landscape of osteoporosis therapies.[5]

Bazedoxifene is marketed both alone and in combination with conjugated estrogens.[6]

Bazedoxifene is a selective estrogen receptor modulator (SERM), or a mixed agonist and antagonist of the estrogen receptor (ER) in different tissues.

Tissue-specific estrogenic and antiestrogenic activity of SERMs
Medication Breast Bone Liver Uterus Vagina Brain
Lipids Coagulation SHBGTooltip Sex hormone-binding globulin IGF-1Tooltip Insulin-like growth factor 1 Hot flashes Gonadotropins
Estradiol + + + + + + + + + +
"Ideal SERM" – + + ± ± ± – + + ±
Bazedoxifene – + + + + ? – ± – ?
Clomifene – + + ? + + – ? – ±
Lasofoxifene – + + + ? ? ± ± – ?
Ospemifene – + + + + + ± ± – ±
Raloxifene – + + + + + ± – – ±
Tamoxifen – + + + + + + – – ±
Toremifene – + + + + + + – – ±
Effect: + = Estrogenic / agonistic. ± = Mixed or neutral. – = Antiestrogenic / antagonistic. Note: SERMs generally increase gonadotropin levels in hypogonadal and eugonadal men as well as premenopausal women (antiestrogenic) but decrease gonadotropin levels in postmenopausal women (estrogenic). Sources: See template.

The drug is a member of the 2-phenylindole group of SERMs, along with zindoxifene and pipendoxifene.[7]

The drug was approved in the European Union by the European Medicines Agency on April 27, 2009.[8]

Bazedoxifene is marketed alone under the brand names Conbriza and Viviant and in combination with conjugated estrogens under the brand names Duavee and Duavive.[6]

  1. ^ "FDA-sourced list of all drugs with black box warnings (Use Download Full Results and View Query links.)". nctr-crs.fda.gov. FDA. Retrieved 22 Oct 2023.
  2. ^ "DUAVEE® (conjugated estrogens/bazedoxifene) tablets for oral use" (PDF). U.S. Food and Drug Administration. October 2013.
  3. ^ Biskobing DM (2007). "Update on bazedoxifene: a novel selective estrogen receptor modulator". Clinical Interventions in Aging. 2 (3): 299–303. PMC 2685267. PMID 18044180.
  4. ^ "Osteoporosis drug stops growth of breast cancer cells, even in resistant tumors". Duke University Medical Center. June 15, 2013.
  5. ^ a b c Komm BS, Chines AA (February 2012). "Bazedoxifene: the evolving role of third-generation selective estrogen-receptor modulators in the management of postmenopausal osteoporosis". Therapeutic Advances in Musculoskeletal Disease. 4 (1): 21–34. doi:10.1177/1759720X11422602. PMC 3383524. PMID 22870492.
  6. ^ a b "Bazedoxifene". drugs.com.
  7. ^ Gribble GW (9 October 2010). Heterocyclic Scaffolds II:: Reactions and Applications of Indoles. Springer Science & Business Media. pp. 14–. ISBN 978-3-642-15732-5.
  8. ^ "EPARs for authorised medicinal products for human use - Conbriza". European Medicines Agency. 26 May 2009. Archived from the original on 11 June 2009. Retrieved 2009-07-08.