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Hormone hacks: could your period make OCD therapy work better?

NCT ID NCT05359562

Knowledge-focused Sponsor: University of Pennsylvania Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jul 23, 2026 · Updated 4 times

Summary

This study looks at whether giving exposure therapy for OCD at different times in a woman's menstrual cycle changes how well it works. Researchers will use brain scans to see if hormones affect the brain's fear network and OCD symptoms. The goal is to find the best time in the cycle for therapy, potentially making treatment more effective.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Exposure and Response Prevention (EX/RP) therapy
What this could lead to
If successful, this could show that timing OCD therapy with certain menstrual phases improves treatment outcomes, leading to more personalized care.
What could go wrong
This is an early-stage observational study with only 120 participants, so results may not apply broadly. The therapy itself is well-established, but hormonal effects on treatment response are still uncertain.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

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.

Participants

About 120 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2022

Expected to finish

Jun 2028

An estimate. End dates often move.

Lead sponsor

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

18 to 45 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Diagnostic and Statistical Manual of Mental Disorders (DSM-5) Diagnosis of OCD; 2. Male and female subjects aged between 18- 45; 3. Women must be menstruating and regularly cycling 4. Ability to tolerate a treatment-free period; 5. No psychotropic medication in the past 12 weeks 6. At entry, at least moderate severity OCD 7. Willingness and ability to give written informed consent after full explanation of study procedures. Exclusion Criteria: 1. Use of birth control (oral contraception or IUD) that affects the menstrual cycle, or menopause. 2. Pregnancy. Women of childbearing potential will be required to sign a statement indicating their intention to avoid pregnancy during the study. 3. Neurologic or medical condition that would prevent safe participation in the full study protocol. 4. Any contradiction to magnetic resonance imaging (e.g., metallic implants or devices). 5. Comorbid psychiatric conditions that significantly elevate the risks associated with study participation or confound results. 6. Patients with prominent suicidal ideation or with a recent suicide attempt. 7. Current psychotherapy

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Conditions

The condition(s) this trial relates to.

obsessive-compulsive disorder obsessive-compulsive personality disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

OCD

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • New York State Psychiatric Institute

    RECRUITING

    New York, New York, 10032, United States

  • University of Pennsylvania

    RECRUITING

    Philadelphia, Pennsylvania, 19104, United States

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