Neuroendocrine Risk for PTSD in Women
The LOW E2 STUDY- Neuroendocrine Risk Mechanisms for Post-traumatic Stress Disorder in Women
2 other identifiers
interventional
250
1 country
1
Brief Summary
This study will test for effects of estradiol (E2) on PTSD symptoms and functional magnetic resonance imaging (fMRI) indicators of stress vulnerability, in naturally-cycling women who are not using hormonal birth control. Enrollment will be targeted to create three groups within two cohorts (early follicular phase and luteal phase):
- 1.PTSD: Women who meet Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria for PTSD
- 2.Trauma-Exposed (TC): Women matched for age and trauma exposure severity but without PTSD
- 3.Healthy Control (HC): Women matched for age, but without trauma history or psychiatric disorder (self-reported)
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for early_phase_1
Started Nov 2019
Longer than P75 for early_phase_1
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
May 30, 2019
CompletedFirst Posted
Study publicly available on registry
June 4, 2019
CompletedStudy Start
First participant enrolled
November 11, 2019
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 30, 2025
CompletedStudy Completion
Last participant's last visit for all outcomes
April 30, 2025
CompletedAugust 14, 2025
August 1, 2025
5.5 years
May 30, 2019
August 12, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (3)
Change in amygdala response to fearful faces stimuli
Responses to threat cues will be assessed by fMRI responses as participants view 15 blocks each of fearful face and neutral face stimuli, while amygdala reactivity is measured.
Mid-cycle second cycle, Mid-cycle third cycle (each cycle is an average of 28 days)
Change in amygdala response to fear conditioning task
Indicators of fear conditioning will be assessed by fMRI during the fear conditioning tasks. Deficits in fear inhibition have been present in persons with PTSD and during phases of the ovarian cycle.
Mid-cycle second cycle, Mid-cycle third cycle (each cycle is an average of 28 days)
Change in ventromedial prefrontal cortex (vmPFC) activation during the fear extinction task
Indicators of fear extinction will be assessed by fMRI during the fear extinction tasks. Fear extinction is impaired in persons with PTSD and depends on the vmPFC and its inhibition of amygdala responses to threat stimuli.
Mid-cycle second cycle, Mid-cycle third cycle (each cycle is an average of 28 days)
Secondary Outcomes (2)
Change in PTSD checklist for DSM-5 (PCL-5)
Baseline, Mid-cycle second cycle, Mid-cycle third cycle (each cycle is an average of 28 days)
Change in Beck Depression Inventory (BDI)
Baseline, Mid-cycle second cycle, Mid-cycle third cycle (each cycle is an average of 28 days)
Study Arms (12)
Cohort 1: PTSD Receiving Estradiol then Placebo
EXPERIMENTALParticipants with PTSD will record their first cycle with the Clue app. They will receive the estradiol patch during the second cycle, and the placebo patch during the third cycle.
Cohort 1: PTSD Receiving Placebo then Estradiol
EXPERIMENTALParticipants with PTSD will record their first cycle with the Clue app. They will receive the placebo patch during the second cycle, and the estradiol patch during the third cycle.
Cohort 1: Trauma without PTSD Receiving Estradiol then Placebo
ACTIVE COMPARATORParticipants with trauma exposure will record their first cycle with the Clue app. They will receive the estradiol patch during the second cycle, and the placebo patch during the third cycle.
Cohort 1: Trauma without PTSD Receiving Placebo then Estradiol
ACTIVE COMPARATORParticipants with trauma exposure will record their first cycle with the Clue app. They will receive the placebo patch during the second cycle, and the estradiol patch during the third cycle.
Cohort 1: Healthy Controls Receiving Estradiol then Placebo
ACTIVE COMPARATORParticipants without trauma history or psychiatric disorder will record their first cycle with the Clue app. They will receive the estradiol patch during the second cycle, and the placebo patch during the third cycle.
Cohort 1: Healthy Controls Receiving Placebo then Estradiol
ACTIVE COMPARATORParticipants without trauma history or psychiatric disorder will will record their first cycle with the Clue app. They will receive the placebo patch during the second cycle, and the estradiol patch during the third cycle.
Cohort 2: PTSD Receiving Estradiol then Placebo
EXPERIMENTALParticipants with PTSD will begin daily urine ovulation tests on Day 11 of their first cycle, and will record the results with the Clue app. During the second month of cycle monitoring, the MRI will be scheduled 5-7 days after they record a positive ovulation test (during luteal phase) and they will use the estradiol patch before getting the MRI. They will apply the placebo patch during the third cycle.
Cohort 2: PTSD Receiving Placebo then Estradiol
EXPERIMENTALParticipants with PTSD will begin daily urine ovulation tests on Day 11 of their first cycle, and will record the results with the Clue app. During the second month of cycle monitoring, the MRI will be scheduled 5-7 days after they record a positive ovulation test (during luteal phase) and they will use the placebo patch before getting the MRI. They will apply the estradiol patch during the third cycle.
Cohort 2: Trauma Control Receiving Estradiol, then Placebo
ACTIVE COMPARATORParticipants with trauma exposure will begin daily urine ovulation tests on Day 11 of their first cycle, and will record the results with the Clue app. During the second month of cycle monitoring, the MRI will be scheduled 5-7 days after they record a positive ovulation test (during luteal phase) and they will use the estradiol patch before getting the MRI. They will apply the placebo patch during the third cycle.
Cohort 2: Trauma Control Receiving Placebo then Estradiol
ACTIVE COMPARATORParticipants with trauma exposure will begin daily urine ovulation tests on Day 11 of their first cycle, and will record the results with the Clue app. During the second month of cycle monitoring, the MRI will be scheduled 5-7 days after they record a positive ovulation test (during luteal phase) and they will use the placebo patch before getting the MRI. They will apply the estradiol patch during the third cycle.
Cohort 2: Healthy Control Receiving Estradiol then Placebo
ACTIVE COMPARATORParticipants without trauma history or psychiatric disorder will begin daily urine ovulation tests on Day 11 of their first cycle, and will record the results with the Clue app. During the second month of cycle monitoring, the MRI will be scheduled 5-7 days after they record a positive ovulation test (during luteal phase) and they will use the estradiol patch before getting the MRI. They will apply the placebo patch during the third cycle.
Cohort 2: Healthy Control Receiving Placebo then Estradiol
ACTIVE COMPARATORParticipants without trauma history or psychiatric disorder will begin daily urine ovulation tests on Day 11 of their first cycle, and will record the results with the Clue app. During the second month of cycle monitoring, the MRI will be scheduled 5-7 days after they record a positive ovulation test (during luteal phase) and they will use the placebo patch before getting the MRI. They will apply the estradiol patch during the third cycle.
Interventions
Estradiol (E2) patches at a dose of 100ug will be applied 24-48 hours before the MRI scan is performed.
Placebo patch identical to the estradiol patch will be applied 24-48 hours before the MRI scan is performed.
Eligibility Criteria
You may qualify if:
- African American women
- A menstrual period within the past 60 days
- Able and willing to give informed consent
- Must have a smart phone and willing to install the Clue app
You may not qualify if:
- Women currently taking any form of hormone-based birth control or other hormonal supplement
- Women who are pregnant or breastfeeding
- Current psychoactive medication use
- Nicotine use or smoking
- Hypercoagulable conditions
- History of embolism
- Current symptoms of psychosis or bipolar disorder
- History of major head injury or neurological disorder
- Weight \>250lbs (a maximum weight to allow for participants to fit comfortably inside the bore of the MRI machine) and typical physical contraindications for MRI such as metal implants
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Emory Universitylead
- National Institute of Mental Health (NIMH)collaborator
Study Sites (1)
Grady Memorial Hospital
Atlanta, Georgia, 30303, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Jennifer Stevens, PhD
Emory University
Study Design
- Study Type
- interventional
- Phase
- early phase 1
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Masking Details
- Randomization will be double blind, with the key held by the study coordinator in a locked file. The study coordinator will do checks of appropriate enrollment to groups after each 20 participants, but no blind will be broken to individuals analyzing study data. Grady pharmacy services will also hold the randomization schedule, as they will dispense the appropriate patch at the appropriate time point.
- Purpose
- BASIC SCIENCE
- Intervention Model
- CROSSOVER
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Assistant Professor
Study Record Dates
First Submitted
May 30, 2019
First Posted
June 4, 2019
Study Start
November 11, 2019
Primary Completion
April 30, 2025
Study Completion
April 30, 2025
Last Updated
August 14, 2025
Record last verified: 2025-08
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- STUDY PROTOCOL
- Time Frame
- Data will be uploaded to the database every 6 months following the standard NIH schedule (Jan 15 and July 15 of each year of funding). Data will be released publicly within 4 months after submission.
- Access Criteria
- Data access requests will be submitted to RDoC database, and approved by NIH before data are shared. Only research investigators sponsored by an NIH recognized institution with federal wide assurance will receive access. Any analysis approved by NIH. Web-based access to the RDoC data archive.
There is an agreement with the National Institute of Mental Health (NIMH) to share deidentified data with Research Domain Criteria (RDoC) database (a centralized NIH database). Raw neuroimaging data and behavioral data for the 3 tasks (Fearful Faces, Fear Conditioning, Fear Extinction), T1 structural brain images, non-identifying demographics, PCL-5, and BDI will be shared.