Hormone therapy brain study pulled before it began
NCT ID NCT04309760
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study was designed to look at how hormone therapy affects brain connections in transgender women (male-to-female). Researchers planned to use MRI scans before and after six months of treatment and compare them to a control group. However, the study was withdrawn before enrolling any participants, so no results are available.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Expected to start
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Feb 2021
An estimate. Start dates often move.
- Finished
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Mar 2022
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 50 years
- Sex
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Male participants only
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * gender dysphoric subjects MtF * right handed * androphilic orientation * without hormone therapy Control group of male subjects: * right handed * without any psychiatric or medical history * androphilic orientation Exclusion Criteria: * MRI contraindication * vulnerable adults * mental retardation * psychiatric or neurological disease including autism spectrum disorders, psychotropic medication * hormonal or genetic condition
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
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Other studies related to the condition(s) this trial covers.
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