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Randomized, Double-blind, Placebo-Controlled Pilot Study of MDMA-assisted Therapy for PTSD

A Randomized, Double-Blind, Active Placebo-Controlled Phase 2 Pilot Study of MDMA-assisted Psychotherapy in People With Chronic, Treatment-Resistant Posttraumatic Stress Disorder (PTSD)

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01689740
Enrollment
10
Registered
2012-09-21
Start date
2013-01-17
Completion date
2017-07-16
Last updated
2025-06-06

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

Conditions

Posttraumatic Stress Disorder (PTSD)

Keywords

MDMA, Posttraumatic stress disorder, PTSD, Israel, psychotherapy, midomafetamine

Brief summary

The goal of this clinical trial is to learn if MDMA-assisted therapy is safe and effective in people with chronic, treatment-resistant PTSD. The main question it aims to answer is: Is there a reduction in PTSD symptoms in people given a low dose of MDMA with therapy versus a high dose of MDMA with therapy? Researchers will compare two sessions of MDMA-assisted therapy with either 25 mg of MDMA HCl or 125 mg of MDMA HCl in Stage 1. Participants will undergo preparatory therapy sessions without any study drug, followed by two sessions of MDMA-assisted therapy, each followed by integrative therapy sessions without study drug. Participants who received 25 mg during Stage 1 will be given the option to enroll in Stage 2 and complete two additional open-label MDMA-assisted therapy sessions with the full dose of 125 mg MDMA.

Detailed description

This randomized, double-blind, active placebo-controlled Phase 2 pilot study investigated the safety and efficacy of MDMA-assisted psychotherapy in 10 people with chronic, treatment-resistant posttraumatic stress disorder (PTSD), comparing the effects of low and full dose MDMA as an adjunct to psychotherapy. The first two subjects were enrolled in the open label full dose lead-in with 125 mg of midomafetamine HCl, followed by a supplemental half-dose of 62.5 mg after 1.5 to 2.5 hours. The remaining eight subjects enrolled in Stage 1 of the study and received either an active placebo dose (low dose of 25 mg midomafetamine HCl with a supplemental half-dose of 12.5 mg) or a fully active dose (125 mg midomafetamine HCl with a supplemental half-dose of 62.5 mg) during two experimental psychotherapy session, each lasting six to eight hours and scheduled three to five weeks apart. Upon enrollment, subjects met with their therapist team for three preparatory sessions. After each MDMA-assisted psychotherapy session, subjects met with their therapist team for integrative psychotherapy sessions. The extent of PTSD symptoms was assessed at baseline and two months after the second experimental session using the Clinician Administered PTSD Scale (CAPS) (Blake et al., 1995). Safety measures, vital signs, and a measurement of psychological distress was assessed during all experimental sessions. Blood pressure and heart rate were assessed periodically during each experimental session. Subjects who enrolled in Stage 1 and received the active placebo had the opportunity to enroll in Stage 2 of the study and complete open-label experimental sessions with the fully active dose of midomafetamine HCl (125 mg and 62.5 mg supplemental) on the same schedule as Stage 1.

Interventions

DRUGActive Placebo Dose MDMA-assisted therapy (25 mg)

Initial dose of 25 mg midomafetamine HCl administered orally at the start of each of two psychotherapy sessions, possibly followed by a supplemental dose of 12.5 mg 1.5 to 2.5 hours later.

DRUGFull Dose MDMA-assisted therapy (125 mg)

Initial dose of 125 mg midomafetamine HCl administered orally at the start of each of two psychotherapy sessions, possibly followed by a supplemental dose of 62.5 mg 1.5 to 2.5 hours later.

DRUGOpen-Label Full Dose MDMA-assisted therapy (125 mg)

Initial dose of 125 mg midomafetamine HCl administered orally at the start of each of two psychotherapy sessions, possibly followed by a supplemental dose of 62.5 mg 1.5 to 2.5 hours later.

BEHAVIORALPsychotherapy

Non-directive psychotherapy will be conducted throughout the study.

Sponsors

Lykos Therapeutics
Lead SponsorINDUSTRY

Study design

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

Eligibility

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

Inclusion criteria

* Diagnosed with chronic PTSD with a duration of 6 months or longer. * Have a CAPS score showing moderate to severe symptoms. * Had at least one unsuccessful attempt at treatment for PTSD, either with talk therapy or with drugs, or stopped treatment because of inability to tolerate psychotherapy or drug therapy. * Are at least 18 years old. * Generally healthy. * Must sign a medical release for the investigators to communicate directly with their therapist and doctors. * Are willing to refrain from taking any psychiatric medications during the study period. * Agree that, one week before the MDMA session, will refrain from taking all below unless with prior approval of research team: herbal supplements, nonprescription medications (with the exception of nonsteroidal anti-inflammatory drugs or acetaminophen, any prescription medications, with the exception of birth control pills, thyroid hormone, or other medications; * Are willing to follow restrictions and guidelines concerning consumption of food, beverages. and nicotine the night before and just prior to each experimental session. * Are willing to remain overnight at the study site. * Are willing to be contacted via telephone for all necessary telephone contacts. * Must have a negative pregnancy test if able to bear children, and agree to use an effective form of birth control. * Agree not to participate in any other clinical trial for the duration of this clinical trial, including the follow-up period. * Are proficient in speaking and reading Hebrew. * Agree to have all psychotherapy sessions recorded to audio/video.

Exclusion criteria

* Are pregnant or nursing, or if they can have children and are not practicing an effective means of birth control. * Weigh less than 48 kg. * Are abusing illegal drugs. * Have used Ecstasy (material represented as containing MDMA) more than five times or at least once within 6 months of the MDMA session. * Are unable to give adequate informed consent. * Upon review of past and current drugs/medication must not be on or have taken a medication that is exclusionary. * Upon review of medical or psychiatric history must not have any current or past diagnosis that would be considered a risk to participation in the study.

Design outcomes

Primary

MeasureTime frameDescription
Change in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to End of Stage 1Baseline to 1-Month Post Experimental Session 2 (End of Stage 1)The Clinician-Administered PTSD Scale for DSM-IV (CAPS-IV) is a clinician administered and scored assessment of PTSD symptoms via structured interview based upon PTSD diagnosis in DSM-IV. 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.

Secondary

MeasureTime frameDescription
Change in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to Long-Term Follow-UpBaseline to 12 months post-final experimental sessionThe Clinician-Administered PTSD Scale for DSM-IV (CAPS-IV) is a clinician administered and scored assessment of PTSD symptoms via structured interview based upon PTSD diagnosis in DSM-IV. 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.
Change in Beck Depression Inventory (BDI-II) Total Scores From Baseline to End of Stage 1Baseline to 1-Month Post Experimental Session 2 (End of Stage 1)Validated self-report measure of symptoms of depression. The BDI-II total score of 0-13 is considered minimal range, 14-19 is mild, 20-28 is moderate, and 29-63 is severe depressive symptoms. The BDI-II is scored by summing the ratings for the 21 items. Each item is rated on a 4-point scale ranging from 0 to 3. The maximum total score is 63.
Change in Beck Depression Inventory (BDI-II) Total Score From Baseline to End of Stage 2Baseline to End of Stage 2Validated self-report measure of symptoms of depression. The BDI-II total score of 0-13 is considered minimal range, 14-19 is mild, 20-28 is moderate, and 29-63 is severe depressive symptoms. The BDI-II is scored by summing the ratings for the 21 items. Each item is rated on a 4-point scale ranging from 0 to 3. The maximum total score is 63.
Change in Beck Depression Inventory (BDI-II) Total Scores From Baseline to Long-Term Follow-UpBaseline to 12 month post-final experimental sessionValidated self-report measure of symptoms of depression. The BDI-II total score of 0-13 is considered minimal range, 14-19 is mild, 20-28 is moderate, and 29-63 is severe depressive symptoms. The BDI-II is scored by summing the ratings for the 21 items. Each item is rated on a 4-point scale ranging from 0 to 3. The maximum total score is 63.
Change in Global Assessment of Functioning (GAF) Scale From Baseline to End of Stage 1Baseline to 1-Month Post 2nd Experimental Session (End of Stage 1)The Global Assessment of Functioning (GAF) Scale is a numeric scale ranging from 0 through 100 that is used by mental health clinicians and physicians to subjectively rate the social, occupational, and psychological functioning of adults. Higher scores indicate better functioning.
Change in Global Assessment of Functioning (GAF) Scale From Baseline to End of Stage 2Baseline to End of Stage 2The Global Assessment of Functioning (GAF) Scale is a numeric scale ranging from 0 through 100 that is used by mental health clinicians and physicians to subjectively rate the social, occupational, and psychological functioning of adults. Higher scores indicate better functioning.
Change in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to End of Stage 2Baseline to End of Stage 2The Clinician-Administered PTSD Scale for DSM-IV (CAPS-IV) is a clinician administered and scored assessment of PTSD symptoms via structured interview based upon PTSD diagnosis in DSM-IV. 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.
Change in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to End of Stage 1Baseline to 1-Month Post 2nd Experimental Session (End of Stage 1)The Posttraumatic Stress Diagnostic Scale (PDS) is a 49-item self-report instrument designed to aid in the diagnosis of PTSD. Responses to 17 symptom items are made on a 4 point scale ranging from 0 (not at all) to 3 (five or more times per week). The symptom items are summed to calculate the symptom severity score which ranges from 0 to 51, with higher scores indicating more severe PTSD symptoms.
Change in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to End of Stage 2Baseline to End of Stage 2The Posttraumatic Stress Diagnostic Scale (PDS) is a 49-item self-report instrument designed to aid in the diagnosis of PTSD. Responses to 17 symptom items are made on a 4 point scale ranging from 0 (not at all) to 3 (five or more times per week). The symptom items are summed to calculate the symptom severity score which ranges from 0 to 51, with higher scores indicating more severe PTSD symptoms.
Change in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to Long-Term Follow-UpBaseline to 12 months post-final experimental sessionThe Posttraumatic Stress Diagnostic Scale (PDS) is a 49-item self-report instrument designed to aid in the diagnosis of PTSD. Responses to 17 symptom items are made on a 4 point scale ranging from 0 (not at all) to 3 (five or more times per week). The symptom items are summed to calculate the symptom severity score which ranges from 0 to 51, with higher scores indicating more severe PTSD symptoms.
Change in Pittsburgh Sleep Quality Index (PSQI) From Baseline to End of Stage 1Baseline to 1-Month Post 2nd Experimental Session (End of Stage 1)The Pittsburgh Sleep Quality Index (PSQI) is a self-rated questionnaire which assesses sleep quality and disturbances. It is comprised of 18 items that yield seven component scores. Component scores are summed to create a total score. Total scores range from 0 (better) to 21 (worse), with higher scores indicating poor sleep quality.
Change in Pittsburgh Sleep Quality Index (PSQI) From Baseline to End of Stage 2Baseline to End of Stage 2The Pittsburgh Sleep Quality Index (PSQI) is a self-rated questionnaire which assesses sleep quality and disturbances. It is comprised of 18 items that yield seven component scores. Component scores are summed to create a total score. Total scores range from 0 (better) to 21 (worse), with higher scores indicating poor sleep quality.
Change in Pittsburgh Sleep Quality Index (PSQI) From Baseline to Long-Term Follow-UpBaseline to 12 months post-final experimental sessionThe Pittsburgh Sleep Quality Index (PSQI) is a self-rated questionnaire which assesses sleep quality and disturbances. It is comprised of 18 items that yield seven component scores. Component scores are summed to create a total score. Total scores range from 0 (better) to 21 (worse), with higher scores indicating poor sleep quality.
Change in Global Assessment of Functioning (GAF) Scale From Baseline to Long-Term Follow-UpBaseline to 12 months post-final experimental sessionThe Global Assessment of Functioning (GAF) Scale is a numeric scale ranging from 0 through 100 that is used by mental health clinicians and physicians to subjectively rate the social, occupational, and psychological functioning of adults. Higher scores indicate better functioning.

Countries

Israel

Participant flow

Recruitment details

Participants were recruited through printed ads, internet ads, referrals from other psychiatrists, psychotherapists or physicians, through the Israeli Defense Forces (IDF) and through word of mouth.

Participants by arm

ArmCount
Lead in: 125 mg MDMA (Open Label) and Psychotherapy
Participants receive open MDMA with an initial dose of 125 mg MDMA possibly followed by a supplemental dose of 62.5 mg during two psychotherapy sessions.
2
Full Dose MDMA (125 mg) and Psychotherapy
Participants receive initial dose of 125 mg MDMA possibly followed by a supplemental dose of 62.5 mg during two psychotherapy sessions scheduled 3-5 weeks apart.
5
Active Placebo Dose MDMA (25 mg) and Psychotherapy
Participants receive initial doses of 25 mg MDMA possibly followed by a supplemental dose of 12.5 mg during two psychotherapy sessions scheduled 3-5 weeks apart.
3
Total10

Baseline characteristics

CharacteristicLead in: 125 mg MDMA (Open Label) and PsychotherapyFull Dose MDMA (125 mg) and PsychotherapyActive Placebo Dose MDMA (25 mg) and PsychotherapyTotal
Age, Continuous40.5 years
STANDARD_DEVIATION 19.72
35.1 years
STANDARD_DEVIATION 10.21
38.5 years
STANDARD_DEVIATION 8.68
37.2 years
STANDARD_DEVIATION 10.57
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
2 Participants5 Participants3 Participants10 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
Ethnicity
Other
0 Participants0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
Ethnicity
White/Caucasian
2 Participants5 Participants2 Participants9 Participants
Sex: Female, Male
Female
1 Participants3 Participants0 Participants4 Participants
Sex: Female, Male
Male
1 Participants2 Participants3 Participants6 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
deaths
Total, all-cause mortality
0 / 20 / 50 / 30 / 20 / 20 / 50 / 20 / 50 / 3
other
Total, other adverse events
2 / 24 / 51 / 32 / 20 / 21 / 50 / 35 / 53 / 3
serious
Total, serious adverse events
0 / 20 / 50 / 30 / 20 / 20 / 50 / 20 / 50 / 3

Outcome results

Primary

Change in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to End of Stage 1

The Clinician-Administered PTSD Scale for DSM-IV (CAPS-IV) is a clinician administered and scored assessment of PTSD symptoms via structured interview based upon PTSD diagnosis in DSM-IV. 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.

Time frame: Baseline to 1-Month Post Experimental Session 2 (End of Stage 1)

Population: Intent-to-Treat (ITT)

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to End of Stage 1-42.0 score on a scaleStandard Deviation 9.9
Active Placebo Dose MDMA (25 mg) and PsychotherapyChange in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to End of Stage 1-9.0 score on a scaleStandard Deviation 15.62
Full Dose MDMA (125 mg) and PsychotherapyChange in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to End of Stage 1-34.6 score on a scaleStandard Deviation 16.29
Secondary

Change in Beck Depression Inventory (BDI-II) Total Score From Baseline to End of Stage 2

Validated self-report measure of symptoms of depression. The BDI-II total score of 0-13 is considered minimal range, 14-19 is mild, 20-28 is moderate, and 29-63 is severe depressive symptoms. The BDI-II is scored by summing the ratings for the 21 items. Each item is rated on a 4-point scale ranging from 0 to 3. The maximum total score is 63.

Time frame: Baseline to End of Stage 2

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Beck Depression Inventory (BDI-II) Total Score From Baseline to End of Stage 2-6.5 score on a scaleStandard Deviation 4.95
Secondary

Change in Beck Depression Inventory (BDI-II) Total Scores From Baseline to End of Stage 1

Validated self-report measure of symptoms of depression. The BDI-II total score of 0-13 is considered minimal range, 14-19 is mild, 20-28 is moderate, and 29-63 is severe depressive symptoms. The BDI-II is scored by summing the ratings for the 21 items. Each item is rated on a 4-point scale ranging from 0 to 3. The maximum total score is 63.

Time frame: Baseline to 1-Month Post Experimental Session 2 (End of Stage 1)

Population: Intent-to-Treat set (ITT)

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Beck Depression Inventory (BDI-II) Total Scores From Baseline to End of Stage 1-17.0 score on a scaleStandard Deviation 2.83
Active Placebo Dose MDMA (25 mg) and PsychotherapyChange in Beck Depression Inventory (BDI-II) Total Scores From Baseline to End of Stage 10.3 score on a scaleStandard Deviation 4.73
Full Dose MDMA (125 mg) and PsychotherapyChange in Beck Depression Inventory (BDI-II) Total Scores From Baseline to End of Stage 1-17.0 score on a scaleStandard Deviation 12.59
Secondary

Change in Beck Depression Inventory (BDI-II) Total Scores From Baseline to Long-Term Follow-Up

Validated self-report measure of symptoms of depression. The BDI-II total score of 0-13 is considered minimal range, 14-19 is mild, 20-28 is moderate, and 29-63 is severe depressive symptoms. The BDI-II is scored by summing the ratings for the 21 items. Each item is rated on a 4-point scale ranging from 0 to 3. The maximum total score is 63.

Time frame: Baseline to 12 month post-final experimental session

Population: Intent-to-Treat set (ITT)

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Beck Depression Inventory (BDI-II) Total Scores From Baseline to Long-Term Follow-Up-17.0 score on a scaleStandard Deviation 5.66
Active Placebo Dose MDMA (25 mg) and PsychotherapyChange in Beck Depression Inventory (BDI-II) Total Scores From Baseline to Long-Term Follow-Up-3.5 score on a scaleStandard Deviation 4.95
Full Dose MDMA (125 mg) and PsychotherapyChange in Beck Depression Inventory (BDI-II) Total Scores From Baseline to Long-Term Follow-Up-18.4 score on a scaleStandard Deviation 11.1
Secondary

Change in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to End of Stage 2

The Clinician-Administered PTSD Scale for DSM-IV (CAPS-IV) is a clinician administered and scored assessment of PTSD symptoms via structured interview based upon PTSD diagnosis in DSM-IV. 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.

Time frame: Baseline to End of Stage 2

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to End of Stage 2-23.0 score on a scaleStandard Deviation 15.56
Secondary

Change in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to Long-Term Follow-Up

The Clinician-Administered PTSD Scale for DSM-IV (CAPS-IV) is a clinician administered and scored assessment of PTSD symptoms via structured interview based upon PTSD diagnosis in DSM-IV. 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.

Time frame: Baseline to 12 months post-final experimental session

Population: Intent-to-Treat set (ITT)

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to Long-Term Follow-Up-39.0 score on a scaleStandard Deviation 14.14
Active Placebo Dose MDMA (25 mg) and PsychotherapyChange in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to Long-Term Follow-Up-34.5 score on a scaleStandard Deviation 20.51
Full Dose MDMA (125 mg) and PsychotherapyChange in Clinical Administered PTSD Scale (CAPS-IV) Total Score From Baseline to Long-Term Follow-Up-48.8 score on a scaleStandard Deviation 20.39
Secondary

Change in Global Assessment of Functioning (GAF) Scale From Baseline to End of Stage 1

The Global Assessment of Functioning (GAF) Scale is a numeric scale ranging from 0 through 100 that is used by mental health clinicians and physicians to subjectively rate the social, occupational, and psychological functioning of adults. Higher scores indicate better functioning.

Time frame: Baseline to 1-Month Post 2nd Experimental Session (End of Stage 1)

Population: Intent-to-Treat set (ITT)

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Global Assessment of Functioning (GAF) Scale From Baseline to End of Stage 115.0 score on a scaleStandard Deviation 21.21
Active Placebo Dose MDMA (25 mg) and PsychotherapyChange in Global Assessment of Functioning (GAF) Scale From Baseline to End of Stage 1-2.3 score on a scaleStandard Deviation 8.74
Full Dose MDMA (125 mg) and PsychotherapyChange in Global Assessment of Functioning (GAF) Scale From Baseline to End of Stage 118.2 score on a scaleStandard Deviation 11.14
Secondary

Change in Global Assessment of Functioning (GAF) Scale From Baseline to End of Stage 2

The Global Assessment of Functioning (GAF) Scale is a numeric scale ranging from 0 through 100 that is used by mental health clinicians and physicians to subjectively rate the social, occupational, and psychological functioning of adults. Higher scores indicate better functioning.

Time frame: Baseline to End of Stage 2

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Global Assessment of Functioning (GAF) Scale From Baseline to End of Stage 28.0 score on a scaleStandard Deviation 9.9
Secondary

Change in Global Assessment of Functioning (GAF) Scale From Baseline to Long-Term Follow-Up

The Global Assessment of Functioning (GAF) Scale is a numeric scale ranging from 0 through 100 that is used by mental health clinicians and physicians to subjectively rate the social, occupational, and psychological functioning of adults. Higher scores indicate better functioning.

Time frame: Baseline to 12 months post-final experimental session

Population: Intent-to-Treat set (ITT)

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Global Assessment of Functioning (GAF) Scale From Baseline to Long-Term Follow-Up5 score on a scaleStandard Deviation 7.07
Active Placebo Dose MDMA (25 mg) and PsychotherapyChange in Global Assessment of Functioning (GAF) Scale From Baseline to Long-Term Follow-Up-1.5 score on a scaleStandard Deviation 0.71
Full Dose MDMA (125 mg) and PsychotherapyChange in Global Assessment of Functioning (GAF) Scale From Baseline to Long-Term Follow-Up26.6 score on a scaleStandard Deviation 10.33
Secondary

Change in Pittsburgh Sleep Quality Index (PSQI) From Baseline to End of Stage 1

The Pittsburgh Sleep Quality Index (PSQI) is a self-rated questionnaire which assesses sleep quality and disturbances. It is comprised of 18 items that yield seven component scores. Component scores are summed to create a total score. Total scores range from 0 (better) to 21 (worse), with higher scores indicating poor sleep quality.

Time frame: Baseline to 1-Month Post 2nd Experimental Session (End of Stage 1)

Population: Intent-to-Treat set (ITT)

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Pittsburgh Sleep Quality Index (PSQI) From Baseline to End of Stage 1-7.5 score on a scaleStandard Deviation 6.36
Active Placebo Dose MDMA (25 mg) and PsychotherapyChange in Pittsburgh Sleep Quality Index (PSQI) From Baseline to End of Stage 11.0 score on a scaleStandard Deviation 5.29
Full Dose MDMA (125 mg) and PsychotherapyChange in Pittsburgh Sleep Quality Index (PSQI) From Baseline to End of Stage 1-1.8 score on a scaleStandard Deviation 4.44
Secondary

Change in Pittsburgh Sleep Quality Index (PSQI) From Baseline to End of Stage 2

The Pittsburgh Sleep Quality Index (PSQI) is a self-rated questionnaire which assesses sleep quality and disturbances. It is comprised of 18 items that yield seven component scores. Component scores are summed to create a total score. Total scores range from 0 (better) to 21 (worse), with higher scores indicating poor sleep quality.

Time frame: Baseline to End of Stage 2

Population: Crossover set

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Pittsburgh Sleep Quality Index (PSQI) From Baseline to End of Stage 2-3.5 score on a scaleStandard Deviation 3.54
Secondary

Change in Pittsburgh Sleep Quality Index (PSQI) From Baseline to Long-Term Follow-Up

The Pittsburgh Sleep Quality Index (PSQI) is a self-rated questionnaire which assesses sleep quality and disturbances. It is comprised of 18 items that yield seven component scores. Component scores are summed to create a total score. Total scores range from 0 (better) to 21 (worse), with higher scores indicating poor sleep quality.

Time frame: Baseline to 12 months post-final experimental session

Population: Intent-to-Treat set (ITT)

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Pittsburgh Sleep Quality Index (PSQI) From Baseline to Long-Term Follow-Up-3.5 score on a scaleStandard Deviation 3.54
Active Placebo Dose MDMA (25 mg) and PsychotherapyChange in Pittsburgh Sleep Quality Index (PSQI) From Baseline to Long-Term Follow-Up-2.0 score on a scaleStandard Deviation 4.24
Full Dose MDMA (125 mg) and PsychotherapyChange in Pittsburgh Sleep Quality Index (PSQI) From Baseline to Long-Term Follow-Up-2.2 score on a scaleStandard Deviation 5.4
Secondary

Change in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to End of Stage 1

The Posttraumatic Stress Diagnostic Scale (PDS) is a 49-item self-report instrument designed to aid in the diagnosis of PTSD. Responses to 17 symptom items are made on a 4 point scale ranging from 0 (not at all) to 3 (five or more times per week). The symptom items are summed to calculate the symptom severity score which ranges from 0 to 51, with higher scores indicating more severe PTSD symptoms.

Time frame: Baseline to 1-Month Post 2nd Experimental Session (End of Stage 1)

Population: Intent-to-Treat set (ITT)

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to End of Stage 1-19.0 score on a scaleStandard Deviation 5.66
Active Placebo Dose MDMA (25 mg) and PsychotherapyChange in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to End of Stage 11.3 score on a scaleStandard Deviation 13.43
Full Dose MDMA (125 mg) and PsychotherapyChange in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to End of Stage 1-17.4 score on a scaleStandard Deviation 9.91
Secondary

Change in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to End of Stage 2

The Posttraumatic Stress Diagnostic Scale (PDS) is a 49-item self-report instrument designed to aid in the diagnosis of PTSD. Responses to 17 symptom items are made on a 4 point scale ranging from 0 (not at all) to 3 (five or more times per week). The symptom items are summed to calculate the symptom severity score which ranges from 0 to 51, with higher scores indicating more severe PTSD symptoms.

Time frame: Baseline to End of Stage 2

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to End of Stage 2-11.5 score on a scaleStandard Deviation 10.61
Secondary

Change in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to Long-Term Follow-Up

The Posttraumatic Stress Diagnostic Scale (PDS) is a 49-item self-report instrument designed to aid in the diagnosis of PTSD. Responses to 17 symptom items are made on a 4 point scale ranging from 0 (not at all) to 3 (five or more times per week). The symptom items are summed to calculate the symptom severity score which ranges from 0 to 51, with higher scores indicating more severe PTSD symptoms.

Time frame: Baseline to 12 months post-final experimental session

Population: Intent-to-Treat set (ITT)

ArmMeasureValue (MEAN)Dispersion
Lead in: 125 mg MDMA (Open Label) and PsychotherapyChange in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to Long-Term Follow-Up-23.0 score on a scaleStandard Deviation 0
Active Placebo Dose MDMA (25 mg) and PsychotherapyChange in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to Long-Term Follow-Up-10 score on a scaleStandard Deviation 9.9
Full Dose MDMA (125 mg) and PsychotherapyChange in Posttraumatic Stress Diagnostic Scale (PDS) Symptom Severity Score From Baseline to Long-Term Follow-Up-20.4 score on a scaleStandard Deviation 12.7

Source: ClinicalTrials.gov · Data processed: Mar 2, 2026