Long-Term Safety and Effectiveness of MDMA-Assisted Therapy for PTSD (MPLONG)
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ClinicalTrials.gov Identifier: NCT05066282 |
Recruitment Status :
Enrolling by invitation
First Posted : October 4, 2021
Last Update Posted : March 15, 2023
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Condition or disease |
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PTSD |
Study Type : | Observational |
Estimated Enrollment : | 400 participants |
Observational Model: | Cohort |
Time Perspective: | Retrospective |
Official Title: | Long-Term Safety and Persistence of Effectiveness of Manualized MDMA-Assisted Therapy for the Treatment of Posttraumatic Stress Disorder |
Actual Study Start Date : | March 1, 2021 |
Estimated Primary Completion Date : | September 23, 2024 |
Estimated Study Completion Date : | September 23, 2024 |
Group/Cohort |
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Participants with past PTSD who received IMP in the main study |
- Clinician Administered PTSD Scale for DSM-V (CAPS-5) Total Severity Score (actual or imputed) from the main study Baseline and Study Termination to assessment in the current LTFU study [ Time Frame: LTFU IR Assessments at Least 6 Months Since Last Experimental Session in Main Study (Visit 1) ]The Clinician-Administered PTSD Scale for DSM-V (CAPS-5) is a clinician administered and scored assessment of PTSD symptoms via structured interview based upon PTSD diagnosis in DSM-5. The total severity score is a sum of symptom frequency and intensity scores for the subscales B (re-experiencing), C (avoidance) and D (hypervigilance) and ranges from 0 to 136, with higher scores indicating greater severity of PTSD symptoms.

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- Enrolled in a MAPS-sponsored study of MDMA-assisted therapy for the treatment of PTSD
- Have received Investigational Medicinal Product (IMP) in at least one Experimental Session in the main study
- Agree to be contacted by study team at least six months after the last Experimental Session in the main study to schedule and participate in LTFU visits
Exclusion Criteria:
- Are not able to give adequate informed consent
- Have any current problem which, in the opinion of the investigator or Medical Monitor, might interfere with participation

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05066282
United States, California | |
USCF | |
San Francisco, California, United States, 94158 | |
Canada, Quebec | |
Dr. Simon Amar Inc | |
Montreal, Quebec, Canada, H2W1Y9 | |
Israel | |
Beer Yaakov Mental Health Center | |
Be'er Ya'aqov, Israel | |
Tel Hashomer | |
Tel Aviv, Israel |
Responsible Party: | Multidisciplinary Association for Psychedelic Studies |
ClinicalTrials.gov Identifier: | NCT05066282 |
Other Study ID Numbers: |
MPLONG |
First Posted: | October 4, 2021 Key Record Dates |
Last Update Posted: | March 15, 2023 |
Last Verified: | March 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |