A Multi-Site Phase 3 Study of MDMA-Assisted Psychotherapy for PTSD (MAPP1)
Posttraumatic stress disorder (PTSD) is a debilitating psychiatric disorder that can develop after a traumatic life experience that severely reduces the quality of life. This multi-site, double-blind, placebo-controlled, randomized Phase III study assessed the efficacy and safety of MDMA-assisted psychotherapy compared to psychotherapy with placebo in participants diagnosed with at least moderate PTSD.
Detailed Description
This randomised, double-blind, parallel-group Phase 3 trial (n≈100) compared MDMA-assisted psychotherapy versus placebo with identical psychotherapy in adults with severe PTSD.
Participants received three preparatory psychotherapy sessions, three experimental sessions (MDMA 80 or 120 mg with a supplemental half-dose 1.5–2 hours later, or placebo), each experimental session followed by three integrative therapy sessions.
Primary outcome is change in CAPS-5 from baseline to 18 weeks; safety assessments include blood pressure, heart rate, body temperature, adverse events and C-SSRS for suicidal ideation/behaviour.
Study Protocol
Preparation
Dosing
Integration
Therapeutic Protocol
Study Arms & Interventions
MDMA-assisted therapy
experimentalThree experimental sessions of MDMA-assisted manualized therapy (plus preparatory and integrative sessions).
Interventions
- MDMA80 - 180 mgvia Oral• three sessions• 3 doses total
Initial 80 or 120 mg followed 1.5–2 h later by supplemental half-dose (40 or 60 mg); per-session total 80–180 mg.
Placebo with therapy
placeboThree experimental sessions of inactive placebo with identical manualized therapy.
Interventions
- Placebovia Oral• three sessions• 3 doses total
Inactive placebo administered during experimental sessions.
Participants
Inclusion Criteria
- Are at least 18 years old
- Are fluent in speaking and reading the predominantly used or recognized language of the study site
- Are able to swallow pills
- Agree to have study visits recorded, including Experimental Sessions, Independent Rater assessments, and non-drug psychotherapy sessions
- Must provide a contact (relative, spouse, close friend or other caregiver) who is willing and able to be reached by the investigators in the event of a participant becoming suicidal or unreachable.
- Must agree to inform the investigators within 48 hours of any medical conditions and procedures
- If of childbearing potential, must have a negative pregnancy test at study entry and prior to each Experimental Session, and must agree to use adequate birth control through 10 days after the last Experimental Session.
- Must not participate in any other interventional clinical trials during the duration of the study
- Must be willing to remain overnight at the study site after each Experimental Session and be driven home after, and commit to medication dosing, therapy, and study procedures
- At baseline, meet DSM-5 criteria for current severe PTSD
Exclusion Criteria
- Are not able to give adequate informed consent
- Have uncontrolled hypertension
- Have a marked baseline prolongation of QT/QTc interval (e.g., repeated demonstration of a QTc interval >450 milliseconds [ms] in males and >460 ms in females corrected by Bazett's formula)
- Have a history of additional risk factors for Torsade de pointes (e.g., heart failure, hypokalemia, family history of Long QT Syndrome)
- Have evidence or history of significant medical disorders, such as myocardial infarction, cerebrovascular accident, or aneurysm
- Have symptomatic liver disease
- Have history of hyponatremia or hyperthermia
- Weigh less than 48 kilograms (kg)
- Are pregnant or nursing, or are of childbearing potential and are not practicing an effective means of birth control
- Have an active illicit or prescription drug use disorder
- Have used Ecstasy (material represented as containing MDMA) more than 10 times within the last 10 years or at least once within 6 months of the first Experimental Session; or have previously participated in a MAPS-sponsored MDMA clinical trial.
Study Details
- StatusCompleted
- PhasePhase III
- Typeinterventional
- DesignRandomizedtriple Blind
- Target Enrollment100 participants
- TimelineStart: 2018-11-29End: 2020-08-21
- Compounds
- Topic