Study Information

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MAPS PBC Clinical Studies: Active Trials and Publications

Up-to-date information about all clinical studies can be found below. Each study links to, a database of privately and publicly funded clinical studies conducted around the world. has all of the most recent information about the status of a study, where it is located, criteria for participating, and a point of contact for those interested in enrolling.


Explanation of Terms

Protocol = This link provides our study protocol documentation.
Publication = If a study has been completed, a link will appear that takes you to the final publication PDF.
Record = This link takes you off of our website to the record page for the study.

Active Phase 3 Trials

Study: MAPP1

A Multi-Site Phase 3 Study of MDMA-Assisted Psychotherapy for PTSD

Active Phase 2 Trials

Study: MDA-1

MDMA-assisted Psychotherapy for Anxiety Associated With a Life-threatening Illness

Study: MDA1-S1

Correlates of Anxiety Associated With a Life-threatening Illness

Study: MP-4

Randomized, Double-blind, Controlled of MDMA-assisted Psychotherapy in 12 Subjects With PTSD

Study: MP8-S1

Exploring Mechanisms of Action in MDMA-assisted Psychotherapy for PTSD

Study: MP1-E2

Additional MDMA-assisted Psychotherapy for People Who Relapsed After MDMA-assisted Psychotherapy Trial

Study: MP-9

Randomized, Double-blind, Active-placebo Controlled Study of MDMA-assisted Psychotherapy in People With Chronic PTSD

Study: MP-16

Open Label Multi-Site Study of Safety and Effects of MDMA-assisted Psychotherapy for Treatment of PTSD

Study: MP-17

Study of Safety and Effects of MDMA-assisted Psychotherapy for Treatment of PTSD

Study: MP-18

An Open-Label Study of MDMA-Assisted Psychotherapy in Subjects with Posttraumatic Stress Disorder (Europe)​

Study: MJP-1

Study of Four Different Potencies of Smoked Marijuana in 76 Veterans With PTSD

Active Phase 1 Trials

Study: MT-1

Psychological Effects of Methylenedioxymethamphetamine (MDMA) When Administered to Healthy Volunteers

Study: MPVA-4

Evaluation of MDMA on Startle Response

Study: MPKH

MDMA in Subjects With Moderate Hepatic Impairment and Subjects With Normal Hepatic Function

Completed Phase 2 Trials

Study: MP-1

Proof of Principle

Study: MP-2

MDMA-Assisted Psychotherapy in the Treatment of Posttraumatic Stress Disorder (PTSD)

Study: MP-8

Study Comparing Three Doses of MDMA Along With Psychotherapy in Veterans With Posttraumatic Stress Disorder

Study: MP-12

MDMA-Assisted Psychotherapy for PTSD: Boulder, Colorado (Intern Study)

Study: LDA-1

Lysergic Acid Diethylamide (LSD)-Assisted Psychotherapy in People With Illness-related Anxiety

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MAPS PBC is a wholly-owned subsidiary of the Multidisciplinary Association for Psychedelic Studies (MAPS). MAPS is a 501(c)(3) non-profit research and educational organization.