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MDMA-Assisted CBT for OCD (MDMA-CBT4OCD Study)

MDMA-Assisted Cognitive Behavioral Therapy (CBT) Compared With Methamphetamine-Assisted CBT in Obsessive-Compulsive Disorder (OCD): A Phase II Study

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05783817
Acronym
MDMA-CBT4OCD
Enrollment
40
Registered
2023-03-24
Start date
2025-09-10
Completion date
2026-12-01
Last updated
2026-03-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Obsessive-Compulsive Disorder

Keywords

OCD, MDMA, OCD CBT, Cognitive Behavioral Therapy

Brief summary

The study assesses the safety and preliminary effectiveness of MDMA-assisted cognitive behavioral therapy in participants diagnosed with obsessive-compulsive disorder (OCD).

Detailed description

Obsessive-Compulsive Disorder (OCD) is a chronic and disabling disorder that costs the economy over $2 billion annually and represents a significant public health problem. The proposed projects tests whether 3,4-Methylenedioxymethamphetamine (MDMA) reduces OCD symptoms.

Interventions

DRUG3,4-Methyl enedioxy methamphetamine

MDMA (3,4 methylenedioxymethamphetamine) is a synthetic, psychoactive drug that is chemically similar to the stimulant methamphetamine.

Methamphetamine is a stimulant that affects the central nervous system. This is used as a control in the study.

BEHAVIORALCognitive Behavioral Therapy (CBT)

Cognitive Behavioral Therapy with exposure and response prevention performed by therapist team.

Sponsors

Carolyn Rodriguez
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

Participants will be randomized with a 1:1 allocation to either MDMA-assisted CBT or methamphetamine-assisted CBT (active control).

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. At least 18 years old 2. Fluent in speaking and reading the predominantly used or recognized language of the study site 3. Able to swallow pills 4. Meet the criteria for OCD diagnosis 5. YBOCS total score of at least 16 6. Not on psychotropic medications 1 month prior to study enrollment 7. Able to tolerate a treatment-free period 8. Able to tolerate study procedures 9. Failed at least 1 prior trial of standard first-line OCD treatment 10. Agree to the following lifestyle modifications: comply with requirements for fasting and refraining from certain medications prior to the Experimental Session, not enroll in any other interventional clinical trials during the duration of the study, and commit to medication dosing, therapy, and study procedures.

Exclusion criteria

1. Pregnant or nursing, or able to become pregnant and are not practicing an effective means of birth control 2. Weigh less than 48 kilograms (kgs) 3. Any current problem which, in the opinion of the investigator or study physician, might interfere with participation

Design outcomes

Primary

MeasureTime frameDescription
Chnage in the severity of OCD symptoms as measured by the Yale-Brown Obsessive Compulsive Scale (YBOCS)Baseline (Visit 1) to End of Intervention (Visit 13), up to 2 weeksChange in OCD severity is measured by the YBOCS (Yale Brown Obsessive-Compulsive Scale), a gold standard measure of obsessions and compulsions. For the YBOCS the minimum units are 0 and Maximum units on the total scale are 40. The higher the number on the YBOCS, the more severe the symptoms. Response is defined as at least a 35% reduction on the YBOCS.

Countries

United States

Contacts

CONTACTAlessa Gaeta, MS
ocdresearch@stanford.edu650-723-4095
PRINCIPAL_INVESTIGATORCarolyn Rodriguez, MD, PhD

Stanford University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 6, 2026