Brain Health in Transgender Adults Study

This study is looking at how the brain changes in the first few months after transgender adults start gender affirming hormone therapy (GAHT). Researchers want to see if GAHT affects blood flow in the brain, the brain's structure and connections, and how well the brain performs tasks like memory and attention. You might be able to join if you are between 18 and 45 years old, plan to start GAHT, and meet other health requirements. The study aims to understand these brain changes by comparing measurements taken before and after starting GAHT. The current recruitment status is unclear.

Study design
This is an observational study planning to enroll 72 participants (36 assigned male at birth and 36 assigned female at birth). It does not involve a specific phase of drug development.
What's involved
You would have two visits: one before starting GAHT and another 4-6 months after. Each visit includes a 1.5-hour MRI scan, body composition and cognitive tests, and an optional exercise test.
Compensation
Not stated in the trial record.
Follow-up
Participants will be followed for up to 6 months after starting GAHT, with measurements taken at baseline and again after 4-6 months.

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NCT07624747

Brain Health in Transgender Adults

Recruiting
Not specifiedAges 18–45Observational
University of Wisconsin, Madison
~72 participants
Updated 2026-06-03 on ClinicalTrials.gov
What's tested:Magnetic Resonance ImagingCognition and Health TestsOptional Exercise Test

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Change Cerebral Blood Flow (CBF)
Measured over baseline and up to 6 months (after 4-6 months of continuous GAHT)
+7 more outcomes measured
Gender Dysphoria
1 sites across 1 states
Wisconsin1
  • William Schrage, PhD · PRINCIPAL_INVESTIGATOR · University of Wisconsin, Madison

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Eligibility criteria

Inclusion

intention to undergo GAHT

Exclusion

BMI greater than 40 kg/m2
Age greater than 45 yrs
Blood pressure greater than 140/90 (stage II hypertension)
A current diagnosis of type II diabetes
History of traumatic brain injury/concussion, stroke, or seizures
Are post-menopausal
Previously taken hormone therapy medications
Self-reported pregnancy (no pregnancy test)
  • Change Cerebral Blood Flow (CBF)baseline and up to 6 months (after 4-6 months of continuous GAHT)

    CBF at rest and in response to cognitive stressors.

  • Change in Brain Structurebaseline and up to 6 months (after 4-6 months of continuous GAHT)

    Grey matter and White matter volumes.

  • Change in Brain Connectivitybaseline and up to 6 months (after 4-6 months of continuous GAHT)

    Measured using MRI.

  • Change in Cognitive Function: Flanker Inhibitory Control and Attentionbaseline and up to 6 months (after 4-6 months of continuous GAHT)

    NIH Toolbox to assess neurocognitive function. The Flanker test is a measure of executive function and is scored using a T-score where 100 is the average, higher scores indicate better performance.

  • Change in Cognitive Function: Pattern Comparison Processing Speed Testbaseline and up to 6 months (after 4-6 months of continuous GAHT)

    NIH Toolbox to assess neurocognitive function. The Pattern Comparison Processing Speed Test measures how many correct responses the participant has within 90 seconds. There is a maximum of 130 items.

  • Change in Cognitive Function: List Sorting Working Memory Testbaseline and up to 6 months (after 4-6 months of continuous GAHT)

    NIH Toolbox to assess neurocognitive function. The List Sorting Working Memory Test is a measure of recall and sorting. Participants scores reflect the number of items recalled and appropriately sorted up to 28 items maximum.

  • Change in Cognitive Function: Dimensional Change Card Sort Testbaseline and up to 6 months (after 4-6 months of continuous GAHT)

    NIH Toolbox to assess neurocognitive function. The Dimensional Change Card Sort Test measures accuracy: the number of accurate responses, up to a maximum of 40.

  • Change in Cognitive Function: Picture Vocabulary Testbaseline and up to 6 months (after 4-6 months of continuous GAHT)

    NIH Toolbox to assess neurocognitive function. The Picture Vocabulary Test has the participant hear a word and then pick from one of four pictures that best represents the word. It is scored using a T-score where 100 is the average, higher scores indicate better performance.