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bazedoxifene/conjugated estrogens

Phase 3

Menopause | Small molecule | Endocrine |Pfizer, Inc.|Last Updated: Apr 8, 2014

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials2
Total Enrollment1,886

FDA Designations

No designations recorded

Clinical trial landscape

bazedoxifene/conjugated estrogens · 2 trials · 2 indications

Phase 3 1Phase 1 1
NCT00808132Study Evaluating The Effects Of Bazedoxifene/Conjugated Estrogens On Endometrial Safety And Postmenopausal OsteoporosisMenopause
COMPLETED1,886 Analytics
PHASE3COMPLETED
Study Evaluating The Effects Of Bazedoxifene/Conjugated Estrogens On Endometrial Safety And Postmenopausal Osteoporosis
MenopauseUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants With Endometrial Hyperplasia at Month 12: Main Study
Month 12

Endometrial hyperplasia was assessed by endometrial biopsies. All endometrial biopsies were read centrally by 2 primary pathologists. If both the pathologists disagreed on the presence of hyperplasia, a third pathologist was consulted. Results were summarized for two definitions of hyperplasia (simple hyperplasia with or without atypia or complex hyperplasia with or without atypia); definition 1: participants were considered to have a diagnosis of hyperplasia when the 3 pathologists disagreed but at least 1 pathologist determined hyperplasia; definition 2: participants were considered to have a diagnosis of hyperplasia if at least 2 of the 3 pathologists agreed on the diagnosis.

Percent Change From Baseline in Bone Mineral Density (BMD) of Lumbar Spine at Month 12: Osteoporosis Sub-Study
Baseline, Month 12

BMD measurements of the anteroposterior lumbar spine were acquired by using dual-energy x-ray absorptiometry (DXA) scans, twice at Month 12 for a subset of participants who entered the osteoporosis substudy. The second scan was to be performed on the same day as the first; however, the participant was to be removed completely from the table after the first scan and repositioned for the second scan. Mean percentage change from baseline of the 2 readings were reported.

Pharmacokinetic measures of blood levels of endogenous estrogen hormones, conjugated estrogens and bazedoxifene.

Secondary Endpoints

Percent Change From Baseline in Bone Mineral Density (BMD) of Lumbar Spine at Month 6: Osteoporosis Sub-Study
Baseline, Month 6
Percent Change From Baseline in Bone Mineral Density (BMD) of Total Hip at Month 6, 12: Osteoporosis Sub-Study
Baseline, Month 6, Month 12
Percentage of Participants With Cumulative Amenorrhea: Main Study
Day 1 up to Day 364
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
1EXPERIMENTALbazedoxifene 20 mg/conjugated estrogens 0.45 mg
2EXPERIMENTALbazedoxifene 20 mg/conjugated estrogens 0.625 mg
3EXPERIMENTALbazedoxifene 20 mg
4ACTIVE_COMPARATORPrempro
5PLACEBO_COMPARATORPlacebo

Interventions

NameTypeDescription
bazedoxifene 20 mg/ conjugated estrogens 0.45 mgDRUGOne capsule, bazedoxifene 20 mg/conjugated estrogens 0.45 mg (over-encapsulated), once a day for one year.
bazedoxifene 20 mg/ conjugated estrogens 0.625 mgDRUGOne capsule, bazedoxifene 20 mg/conjugated estrogens 0.625 mg (over-encapsulated), once a day for one year.
bazedoxifene 20 mgDRUGOne capsule, bazedoxifene 20 mg (over-encapsulated), once a day for one year.
conjugated estrogens 0.45 mg/ medroxyprogesterone acetate 1.5 mgDRUGOne capsule, conjugated estrogens 0.45 mg and medroxyprogesterone 1.5 mg (over-encapsulated), once a day for one year.
PlaceboDRUGOne capsule, placebo (over-encapsulated), once a day for one year.
bazedoxifene/conjugated estrogensDRUG -
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Eligibility Criteria

Age Range40 Years to 64 Years
SexFEMALE
Healthy VolunteersNo
Study Sites178

Inclusion Criteria: * Generally healthy, postmenopausal women, aged 40 to 64 seeking treatment for menopausal symptoms * At least 12 months of spontaneous amenorrhea, OR 6 months spontaneous amenorrhea with follicle-stimulating hormone (FSH) levels \> 40 mIU/mL * Intact Uterus Exclusion Criteria: ...

Countries:United StatesArgentinaAustraliaChileColombiaDenmarkFinlandHungaryMexicoNew ZealandNorwayPoland
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Frequently asked questions about bazedoxifene/conjugated estrogens

What is Bazedoxifene used for?

Bazedoxifene is an investigational small molecule being studied for conditions related to menopause, including postmenopausal osteoporosis, vaginal atrophy, endometrial hyperplasia, and vasomotor symptoms associated with menopause. It is being developed by Pfizer, Inc. (PFE) and is currently in Phase 3 clinical development.

Who makes Bazedoxifene?

Bazedoxifene is being developed by Pfizer, Inc., which trades under the ticker symbol PFE. The drug is an investigational small molecule in Phase 3 clinical development for multiple menopause-related conditions, including osteoporosis and vasomotor symptoms.

What phase is Bazedoxifene in?

Bazedoxifene is in Phase 3 clinical development. It is an investigational drug and has not been approved by regulatory authorities. Pfizer, Inc. (PFE) is the developer, and the drug is being studied for postmenopausal osteoporosis, vaginal atrophy, and vasomotor symptoms associated with menopause.

What clinical trials has Bazedoxifene been in?

Bazedoxifene has completed three clinical trials. One Phase 3 trial (NCT00238732) evaluated Bazedoxifene with conjugated estrogens for vasomotor symptoms and vaginal atrophy in 650 women. A Phase 2 trial (NCT00238745) studied dose-response in 375 Japanese patients with postmenopausal osteoporosis. Two Phase 1 trials (NCT00479778, NCT00706225) assessed pharmacokinetics and drug interactions in healthy postmenopausal women.

Is Bazedoxifene the same as a combination therapy?

Bazedoxifene has been studied in combination with conjugated estrogens. Clinical trials such as NCT00238732 evaluated Bazedoxifene with conjugated estrogen combinations for vasomotor symptoms and vaginal atrophy, and NCT00479778 examined the pharmacokinetic profile of Bazedoxifene in two Bazedoxifene and conjugated estrogen forms.

What is the mechanism of action of Bazedoxifene?

Bazedoxifene is a small molecule being developed for menopause-related conditions. Its specific molecular target has not been disclosed in the available clinical trial information. The drug is being studied for its effects on postmenopausal osteoporosis, vaginal atrophy, and vasomotor symptoms.