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

An Open-Label Proof-of-Principle Study Testing the Use of an Additional MDMA-Assisted Therapy Session in People Who Relapsed After Participating in a Phase 2 Clinical Trial of MDMA-Assisted Therapy to Treat Chronic, Treatment-Resistant Posttraumatic Stress Disorder

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01458327
Enrollment
3
Registered
2011-10-24
Start date
2010-12-15
Completion date
2014-06-27
Last updated
2024-01-24

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

Conditions

Posttraumatic Stress Disorder

Keywords

MDMA, PTSD, therapy

Brief summary

This study will consist of a single session of MDMA-assisted therapy with a full dose of MDMA for people who took part in a study of MDMA-assisted therapy in people with posttraumatic stress disorder (PTSD) whose PTSD symptoms returned to higher levels at least a year after the first MDMA sessions. The single session will be performed by the same pair of therapists who performed the sessions in the first study. People will have a preparatory session, the MDMA-assisted session and three non-drug sessions afterward. Their PTSD symptoms and symptoms of depression will be measured at the start of this study and two and 12 months after the session.

Detailed description

This study will investigate the effects of an additional 3,4-methylenedioxymethamine (MDMA)-assisted therapy session in up to three participants with PTSD who relapsed after their PTSD symptoms had significantly decreased during MAPS' initial U.S. Phase 2 trial testing the use of MDMA-assisted therapy in subjects with chronic, treatment-resistant posttraumatic stress disorder PTSD). This new protocol will consist of a single, full-dose open-label session of MDMA-assisted therapy, along with associated non-drug preparation and integrative therapy sessions. MDMA is an investigational drug that was studied in a randomized, placebo-controlled study in 21 participants, and it included a final evaluation of symptoms at least one year after taking part in the study. While PTSD symptoms in most study subjects stayed at the same levels from when they completed the study, symptoms had returned in a few people. This open-label study is intended to see if an additional MDMA-assisted session conducted at least 14 months after the first sessions can help reduce PTSD symptoms. The MDMA-assisted therapy session will be conducted by a male and female co-therapist team, one a psychiatrist and the other a psychiatric nurse. Vital signs (blood pressure, pulse and body temperature) and psychological distress will be measured throughout the experimental session. After the experimental session they will spend the night in the clinic with an attendant on duty, and complete a measure of alterations in consciousness, the States of Consciousness Questionnaire (SCQ) on the evening or day following the experimental session. Participants will meet with the investigators the next morning for an integrative therapy session before leaving the clinic. During integrative therapy sessions they will receive support in integrating their experiences and insights from the MDMA-assisted therapy session. There will be daily phone contact with one of the investigators for 7 days after the experimental session. Symptoms of PTSD, depression and general function will be assessed two months after the experimental session. There will be a long-term follow up with repeated outcome measures 12 months after the experimental session

Interventions

125 mg MDMA followed by 62.5 mg MDMA 1.5 to 2.5 hours later

BEHAVIORALTherapy

Non-directive therapy

Sponsors

Lykos Therapeutics
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Be diagnosed with chronic PTSD; * Have a CAPS score showing moderate to severe PTSD symptoms; * Have participated in MP-1; * Are at least 18 years old; * Must be 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; * Willing to follow restrictions and guidelines concerning consumption of food, beverages, and nicotine the night before and just prior to each experimental session; * Willing to remain overnight at the study site; * Agree to have transportation other than driving themselves home or to where they are staying after the integrative session on the day after the MDMA session; * 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; * must provide a contact in the event of a participant becoming suicidal; * Are proficient in speaking and reading English; * agree to have all clinic visit sessions recorded to audio and video * Agree not to participate in any other interventional clinical trials during the duration of this study.

Exclusion criteria

* Are pregnant or nursing, or if a woman who can have children, those who are not practicing an effective means of birth control; * Weigh less than 48 kg; * Are abusing illegal drugs; * 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
Baseline Clinician-Administered PTSD Scale for DSM-IV (CAPS-IV)Less than 4 weeks before first experimental sessionThe CAPS-IV is a structured clinical interview designed to assess the symptoms and severity of PTSD. The CAPS-IV provides a means to evaluate the frequency and intensity dimensions of each symptom, the impact of symptoms on the patient's social and occupational functioning, the overall severity of the symptom complex, global improvement since baseline, and the validity of the ratings obtained. Total severity scores range from 0 to 136, with higher scores indicating greater severity of PTSD symptoms.
Clinician-Administered PTSD Scale for DSM-IV (CAPS-IV) at 2-month Follow-up2 months post experimental sessionThe CAPS-IV is a structured clinical interview designed to assess the symptoms and severity of PTSD. The CAPS-IV provides a means to evaluate the frequency and intensity dimensions of each symptom, the impact of symptoms on the patient's social and occupational functioning, the overall severity of the symptom complex, global improvement since baseline, and the validity of the ratings obtained. Total severity scores range from 0 to 136, with higher scores indicating greater severity of PTSD symptoms.
Clinician-Administered PTSD Scale (CAPS-IV)) at 12-month Follow-up12 months post 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 Clinician-Administered PTSD Scale (CAPS-IV) From Baseline to 2-month Follow-upBaseline to 2 months post 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 Clinician-Administered PTSD Scale (CAPS-IV) From Baseline to 12-month Follow-upBaseline to 12 months post 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.

Countries

United States

Participant flow

Participants by arm

ArmCount
3,4-methylenedoxymethamphetamine (MDMA)-Assisted Therapy
3,4-methylenedioxymethamphetmine (MDMA): 125 mg MDMA followed by 62.5 mg MDMA 1.5 to 2.5 hours later MDMA-AT: MDMA-assisted therapy
3
Total3

Baseline characteristics

Characteristic3,4-methylenedoxymethamphetamine (MDMA)-Assisted Therapy
Age, Continuous46.9 years
STANDARD_DEVIATION 7.79
Sex: Female, Male
Female
3 Participants
Sex: Female, Male
Male
0 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 3
other
Total, other adverse events
1 / 3
serious
Total, serious adverse events
1 / 3

Outcome results

Primary

Baseline Clinician-Administered PTSD Scale for DSM-IV (CAPS-IV)

The CAPS-IV is a structured clinical interview designed to assess the symptoms and severity of PTSD. The CAPS-IV provides a means to evaluate the frequency and intensity dimensions of each symptom, the impact of symptoms on the patient's social and occupational functioning, the overall severity of the symptom complex, global improvement since baseline, and the validity of the ratings obtained. Total severity scores range from 0 to 136, with higher scores indicating greater severity of PTSD symptoms.

Time frame: Less than 4 weeks before first experimental session

Population: Intent-to-treat

ArmMeasureValue (MEAN)Dispersion
3,4-methylenedoxymethamphetamine (MDMA)-Assisted TherapyBaseline Clinician-Administered PTSD Scale for DSM-IV (CAPS-IV)93.3 score on a scaleStandard Deviation 1.53
Primary

Change in Clinician-Administered PTSD Scale (CAPS-IV) From Baseline to 12-month 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 experimental session

Population: Intent-to-treat

ArmMeasureValue (MEAN)Dispersion
3,4-methylenedoxymethamphetamine (MDMA)-Assisted TherapyChange in Clinician-Administered PTSD Scale (CAPS-IV) From Baseline to 12-month Follow-up-40.7 score on a scaleStandard Deviation 40.27
Primary

Change in Clinician-Administered PTSD Scale (CAPS-IV) From Baseline to 2-month 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 2 months post experimental session

Population: Intent-to-treat

ArmMeasureValue (MEAN)Dispersion
3,4-methylenedoxymethamphetamine (MDMA)-Assisted TherapyChange in Clinician-Administered PTSD Scale (CAPS-IV) From Baseline to 2-month Follow-up-62.0 score on a scaleStandard Deviation 12.53
Primary

Clinician-Administered PTSD Scale (CAPS-IV)) at 12-month 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: 12 months post experimental session

Population: Intent-to-treat

ArmMeasureValue (MEAN)Dispersion
3,4-methylenedoxymethamphetamine (MDMA)-Assisted TherapyClinician-Administered PTSD Scale (CAPS-IV)) at 12-month Follow-up52.7 score on a scaleStandard Deviation 39.63
Primary

Clinician-Administered PTSD Scale for DSM-IV (CAPS-IV) at 2-month Follow-up

The CAPS-IV is a structured clinical interview designed to assess the symptoms and severity of PTSD. The CAPS-IV provides a means to evaluate the frequency and intensity dimensions of each symptom, the impact of symptoms on the patient's social and occupational functioning, the overall severity of the symptom complex, global improvement since baseline, and the validity of the ratings obtained. Total severity scores range from 0 to 136, with higher scores indicating greater severity of PTSD symptoms.

Time frame: 2 months post experimental session

Population: Intent-to-treat

ArmMeasureValue (MEAN)Dispersion
3,4-methylenedoxymethamphetamine (MDMA)-Assisted TherapyClinician-Administered PTSD Scale for DSM-IV (CAPS-IV) at 2-month Follow-up31.3 score on a scaleStandard Deviation 12.01

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026