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Study Evaluating Effects of Multiple-Dose Administration of Itraconazole on the Single Dose Pharmacokinetics of Conjugated Estrogens/Bazedoxifene in Non-Obese and Obese Postmenopausal Women

A Phase 1, Open Label, Two Period, Fixed Sequence, Parallel Group Study To Estimate The Effects Of Multiple Dose Administration Of Itraconazole On The Single Dose Pharmacokinetics Of Conjugated Estrogens/Bazedoxifene In Non Obese (Bmi <30 Kg/m2) And Obese (Bmi ≥30 Kg/m2) Postmenopausal Women

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02100553
Acronym
CE/BZA
Enrollment
24
Registered
2014-04-01
Start date
2014-04-30
Completion date
2014-06-30
Last updated
2015-03-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Keywords

Postmenopausal Women, Obese, Non-obese, Drug Interaction with Itraconazole, Pharmacokinetic

Brief summary

This study will assess if itraconazole will affect the blood levels of Duavee when they are given together. This study will also assess if a subject's body size affects the blood levels of Duavee.

Interventions

DRUGCE/BZA

CE 0.45mg/BZA 20mg tablets, single dose

DRUGItraconazole

Two 100 mg capsules, once daily for 7 days

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
40 Years to 64 Years
Healthy volunteers
Yes

Inclusion criteria

* Generally healthy postmenopausal women, aged 40-64. Intact Uterus

Exclusion criteria

* The use of oral, vaginal, or transdermal estrogen, androgen or progestin-containing medications within 30 days before study drug administration.

Design outcomes

Primary

MeasureTime frameDescription
Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC (0 - inf)] for BZA, total estrone adjusted for baseline and total equilin.up to 96 hoursAUC (0 - inf)= Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0 - inf). It is obtained from AUC (0 - t) plus AUC (t - inf).
Maximum Observed Plasma Concentration (Cmax) for BZA, total estrone adjusted for baseline and total equilin.up to 96 hours

Secondary

MeasureTime frameDescription
Apparent Oral Clearance (CL/F) for all analytes.up to 96 hoursClearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood.
Time to Reach Maximum Observed Plasma Concentration (Tmax) for all analytes.up to 96 hours
Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC (0 - inf)] for unconjugated estrone, unconjugated estrone adjusted for baseline, total estrone, and unconjugated equilin.up to 96 hoursAUC (0 - inf)= Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0 - inf). It is obtained from AUC (0 - t) plus AUC (t - inf).
Terminal Phase Elimination Half-Life (t1/2) for all analytes.up to 96 hoursTerminal Phase Elimination Half-Life is the time measured for the plasma concentration to decrease by one half.
Apparent Volume of Distribution (Vz/F) for all analytes.up to 96 hoursVolume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug. Apparent volume of distribution after oral dose (Vz/F) is influenced by the fraction absorbed.
Maximum Observed Plasma Concentration (Cmax) for unconjugated estrone, unconjugated estrone adjusted for baseline, total estrone, and unconjugated equilin.up to 96 hours

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026