Effect of Estrogen Treatment on Drug Metabolism and Transport
NCT ID: NCT05469204
Last Updated: 2026-01-09
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
PHASE4
22 participants
INTERVENTIONAL
2022-11-01
2025-07-30
Brief Summary
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Detailed Description
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Conditions
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Study Design
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NA
SINGLE_GROUP
OTHER
NONE
Study Groups
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Healthy transgender adults
Healthy transgender adults will be studied on two separate study days and serve as their own control.
Midazolam oral solution
2 mg single-dose before and during estradiol treatment.
Digoxin Oral Tablet
0.25 mg single-dose before and during estradiol treatment.
Acetaminophen Oral Tablet
500 mg single-dose before and during estradiol treatment.
Midazolam Injectable Solution
1 mg intravenous single-dose before and during estradiol treatment.
Interventions
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Midazolam oral solution
2 mg single-dose before and during estradiol treatment.
Digoxin Oral Tablet
0.25 mg single-dose before and during estradiol treatment.
Acetaminophen Oral Tablet
500 mg single-dose before and during estradiol treatment.
Midazolam Injectable Solution
1 mg intravenous single-dose before and during estradiol treatment.
Eligibility Criteria
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Inclusion Criteria
* Not taking estradiol treatment currently.
* Planning to start injectable estradiol or estradiol tablets for gender-affirming medical care.
Exclusion Criteria
* Unwilling/unable to provide written informed consent.
18 Years
55 Years
ALL
Yes
Sponsors
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National Institute of General Medical Sciences (NIGMS)
NIH
University of Washington
OTHER
Responsible Party
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Lauren Cirrincione
Assistant Professor
Locations
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University of Washington
Seattle, Washington, United States
Countries
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Provided Documents
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Document Type: Informed Consent Form
Other Identifiers
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STUDY00014091
Identifier Type: -
Identifier Source: org_study_id
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