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RecruitingPhase 2

Examining Mu Opioid Mechanisms of Ketamine's Rapid Effects in OCD (MKET2)

NCT05940324 · MKET2 · Stanford University

Recruiting
Status
Accepting participants
Phase 2
Phase
150
Target enrolment
1
Study sites
1 US states

What it is testing

Summary

The purpose of this study is to understand how ketamine works in the brain to bring about a reduction in OCD symptoms.

Summary as written by the trial’s own sponsor and published on ClinicalTrials.gov API v2. It is the sponsor’s description, reproduced unedited, not an assessment by this site.

What counts as success

Primary outcome measures

  • Change in the severity of OCD symptoms as measured by the Yale-Brown Obsessive Compulsive Scale (YBOCS)

    Measured over Baseline (Visit 2) to Post Infusion fMRI scan (Visit 4; Day 1), up to 1 week

A trial succeeds or fails on its primary outcome, declared in advance. Everything else it reports is secondary by definition.

Who can take part

Eligibility, as published

18 Years to 65 Years
Ages
All
Sex
Accepted
Healthy volunteers
Eligibility Criteria for Participants with OCD: Inclusion Criteria: * Ages 18-65 * Meet the criteria for OCD diagnosis * Failed at least 1 prior trial of standard first-line OCD treatment * Agree to the following lifestyle modifications: comply with requirements for fasting prior to the Experimental Session, not enroll in any other interventional clinical trials during the duration of the study, and commit to medication study procedures. * Able to provide informed consent Exclusion Criteria: * prior naltrexone or ketamine use/exposure * Any current or past medical/psychiatric condition that makes participation unsafe in the opinion of the investigator or study physician * Pregnant or nursing, or able to become pregnant and are not practicing an effective means of birth control * the presence of metal in the body that is contraindicated for MRI scans Eligibility Criteria for Healthy Volunteers: Inclusion Criteria: * Ages 18-65 * Able to provide informed consent Exclusion Criteria: * current or past use of psychotropic medication * pregnant or nursing females * the presence of metal in the body that is contraindicated for MRI scans

Where

1 study site

FacilityCityRegionCountry
Department of Psychiatry & Behavioral SciencesStanfordCaliforniaUnited States

On the registry

Contact the trial directly

This site does not enrol anyone and is not involved in this trial. To ask about taking part, use the sponsor’s own contact details on the official registry record, which is also where the most current version of everything above lives.

Before you do, the preparation checklist lists what a site will ask you on a first call and what is worth asking them. It is free and collects nothing.

NCT05940324 on ClinicalTrials.gov →

Last updated in the registry 2026-04-24. Registry records change; this page reflects the data build of 2026-08-25.

Related

Where this trial sits

Substance

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