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Safety and Efficacy of Low Dose MM120 for ADHD Proof of Concept Trial

Safety and Efficacy of Repeated Low Dose d-Lysergic Acid Diethylamide (LSD) D-tartrate (MM120) as Treatment for ADHD in Adults: a Multi-center, Randomized, Double-blind, Placebo-controlled Phase 2a Proof of Concept Trial

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05200936
Enrollment
53
Registered
2022-01-21
Start date
2021-12-17
Completion date
2023-12-04
Last updated
2026-02-27

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

Conditions

ADHD, Attention Deficit Disorder

Brief summary

This study measures the safety and efficacy of repeated low dose MM120 as treatment for ADHD in adults: a multi-center, randomized, double-blind, placebo-controlled

Detailed description

This study is a multi-center, randomized, double-blind, placebo-controlled Phase 2a study of low dose MM120 (20 μg) compared with a placebo administered for 6 weeks (twice a week on a 3/4-day schedule). Low dose MM120 (20 μg) is about 20% of the dose typically consumed for recreational psychedelic purposes. There will be a 1:1 randomization, double-blind, to MM120 or placebo with the aim to reach 26 evaluable patients in each of the 2 arms at Week 6.

Interventions

DRUGMM120

MM120 is a psychedelic drug that can cause intensified thoughts, emotions, and sensory perception. At sufficiently high dosages MM120 manifests primarily visual, as well as auditory, hallucinations.

OTHERPlacebo

A treatment which is designed to have no therapeutic value.

Sponsors

Definium Therapeutics US, Inc.
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 65 Years
Healthy volunteers
No

Inclusion criteria

* Male and female outpatients ≥ 18 and ≤ 65 years of age at Screening * Patients with the diagnosis of Diagnostic and Statistical Manual of Mental Disorders-5 (DSM-5) ADHD, as determined by clinical evaluation and confirmed by structured interview (MINI). * Adequate organ function. * Able to understand the study procedures and understand risks associated with the study, and sign written informed consent to participate in the study. * Must be willing to refrain from more than 6 standard alcoholic drinks a week, more than 10 cigarettes a day, and more than 2 cups of coffee a day throughout the study treatment period (6 weeks) and until the last study visit is complete.

Exclusion criteria

* Past or present diagnosis of a primary psychotic disorder or first degree relative with a psychotic disorder. * Past or present bipolar disorder (DSM-5). * Any lifetime history of suicide attempt. * Once Informed Consent form is signed, not willing or able to stop any prescription or non-prescription ADHD medications. * Use of investigational medication/treatment in the past 30 days. * Patients with a positive urine drug screen with the exception of THC or its metabolites. * Pregnant or nursing females.

Design outcomes

Primary

MeasureTime frameDescription
Change in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) Symptoms6 weeksThe Adult ADHD investigator symptom rating scale (AISRS) total score consists of 18 items from the original Attention-deficit/hyperactivity Disorder Rating Scale (ADHD-RS). The ADHD-RS includes 9 items that address symptoms of inattention, and 9 items that address symptoms of impulsivity and hyperactivity. Each item is rated from 0 to 3. The AISRS total score can range from 0 to 54. A higher score corresponds to a worse severity of ADHD.

Secondary

MeasureTime frameDescription
Changes in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) Investigator Symptom Rating Scale (AISRS) SymptomsWeek 2The Adult ADHD investigator symptom rating scale (AISRS) total score consists of 18 items from the original Attention-deficit/hyperactivity Disorder Rating Scale (ADHD-RS). The ADHD-RS includes 9 items that address symptoms of inattention, and 9 items that address symptoms of impulsivity and hyperactivity. Each item is rated from 0 to 3. The AISRS total score can range from 0 to 54. A higher score corresponds to a worse severity of ADHD.
Number of Patients Who Experience a Decrease in the Clinical Global Impressions Scale (CGI-S)Baseline, Week 2, Week 6, Week 10The Clinical Global Impression - Severity (CGI-S) was used to assess the subject's current severity of illness at the time of the assessment relative to the clinician's past experience with patients who have the same diagnosis. The CGI-S comprises 1 Investigator-completed (or trained rater-completed) item with 7 possible ratings (1-7 points), where a higher score indicates more severe illness.
Change From Baseline in in Clinical Global Impressions Scale (CGI-S)Baseline, Week 2, Week 6The Clinical Global Impression - Severity (CGI-S) was used to assess the subject's current severity of illness at the time of the assessment relative to the clinician's past experience with patients who have the same diagnosis. The CGI-S comprises 1 Investigator-completed (or trained rater-completed) item with 7 possible ratings (1-7 points), where a higher score indicates more severe illness.
Adult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)6 weeksThe Adult Attention-Deficit/Hyperactivity Disorder Self-Reporting Rating Scale (ASRS) is composed of 18 questions, and uses a scale that ranges from 0-4 based on the individuals mark in either the "never, rarely, sometimes, often, very often" column for a possible total score of 72. A higher score corresponds to a worse severity of ADHD.
Change From Baseline in Connors' Adult ADHD Rating Scale (CAARS)6 weeksThe Connors' Adult ADHD Rating Scale (CAARS) Self-Report Long Form is a 66-item measure of ADHD symptom. Responses are scored on a 4-point scale, where 0 = not at all, 1 = just a little, 2 = pretty much, and 3 = very much. Item scores are summed to three main scores which are then transformed using population-derived age- and sex-adjusted norm values to a T-score. A T-score \< 60 indicates no ADHD. A T-score of 60-64 indicates borderline ADHD. A T-score of \> 64 indicates ADHD.
5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) Scores6 weeksThe 5 dimensions of altered states of consciousness (5D-ASC) scale is a visual analog scale (VAS) consisting of 94 items each scored on a 0-100mm VAS extrapolated to 100% scale for quantitative evaluation. These 94 items are categorized into five dimensions: oceanic boundlessness (min:0, max:2700), anxious ego dissolution (min:0, max:2100), visionary destructuralization (min:0, max:1800), auditory alterations (min:0, max:1600), and vigilance reduction (min:0, max:1200). The total score is the sum of all questions and can range from 0 to 9400. Higher scores = more alteration in state of consciousness.
Mystical Experience Questionnaire 30 Items (MEQ30)6 weeksThe Mystical Experience Questionnaire 30 item (MEQ30) is a 30-item questionnaire rated on a six-point scale. The scale has been used to assess mystical experiences in studies using psilocybin and LSD. Higher scores = greater mystical experiences. The total score is expressed as a percentage of the maximum possible score (0 to 100%).
Summary of Drug Effects Visual Analog Scale (VAS)6 hoursA series of single item visual Analog Scales (VAS) are used repeatedly 0 -6 hours after drug administration: The following 9 items were used in VAS (0-100 mm): "any drug effect", "good drug effect", bad drug effect", "drug liking", "fear", nausea", "alteration of vision", "alteration of sense of time", and "the boundaries between myself and my surroundings seem to blur". VAS scores range from 0 = no effect to 100 = strong effect. The scores for each item are extrapolated to a 100% scale and presented for each time point of assessment.

Countries

Netherlands, Switzerland

Contacts

PRINCIPAL_INVESTIGATORKim Kuypers

Maastricht University

PRINCIPAL_INVESTIGATORMatthias Liechti

University Hospital, Basel, Switzerland

Participant flow

Pre-assignment details

A total of 74 potential participants were screened and 21 were excluded.

Participants by arm

ArmCount
Arm 2- MM-120
A total of 26 patients will receive 20 μg of MM-120 administered orally twice weekly for 6 weeks. MM-120: MM-120 is a psychedelic drug that can cause intensified thoughts, emotions, and sensory perception. At sufficiently high dosages MM-120 manifests primarily visual, as well as auditory, hallucinations.
27
Arm 1- Placebo
A total of 26 patients will receive a placebo identical in appearance to the investigational medicinal product (IMP) administered orally twice weekly (e.g., Tuesday/Friday) for 6 weeks. Placebo: A treatment which is designed to have no therapeutic value.
26
Total53

Baseline characteristics

CharacteristicArm 2- MM-120Arm 1- PlaceboTotal
Age, Continuous40.3 years
STANDARD_DEVIATION 12.8
33.1 years
STANDARD_DEVIATION 11
36.7 years
STANDARD_DEVIATION 12.4
Baseline ADHD investigator symptom rating scale (AISRS)37.4 units on a scale
STANDARD_DEVIATION 6.11
37.3 units on a scale
STANDARD_DEVIATION 5.24
37.4 units on a scale
STANDARD_DEVIATION 5.69
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
27 Participants26 Participants53 Participants
Race (NIH/OMB)
White
0 Participants0 Participants0 Participants
Region of Enrollment
Netherlands
2 participants1 participants3 participants
Region of Enrollment
Switzerland
25 participants25 participants50 participants
Sex: Female, Male
Female
13 Participants9 Participants22 Participants
Sex: Female, Male
Male
14 Participants17 Participants31 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 270 / 26
other
Total, other adverse events
21 / 2723 / 26
serious
Total, serious adverse events
0 / 270 / 26

Outcome results

Primary

Change in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) Symptoms

The Adult ADHD investigator symptom rating scale (AISRS) total score consists of 18 items from the original Attention-deficit/hyperactivity Disorder Rating Scale (ADHD-RS). The ADHD-RS includes 9 items that address symptoms of inattention, and 9 items that address symptoms of impulsivity and hyperactivity. Each item is rated from 0 to 3. The AISRS total score can range from 0 to 54. A higher score corresponds to a worse severity of ADHD.

Time frame: 6 weeks

Population: Full Analysis Set (FAS): All subjects in the randomized set (RAN) who were not mis-randomized

ArmMeasureGroupValue (MEAN)Dispersion
Arm 2- MM-120Change in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) SymptomsBaseline37.4 units on a scaleStandard Deviation 6.11
Arm 2- MM-120Change in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) SymptomsWeek 629.6 units on a scaleStandard Deviation 8.27
Arm 1- PlaceboChange in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) SymptomsBaseline37.3 units on a scaleStandard Deviation 5.24
Arm 1- PlaceboChange in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) SymptomsWeek 629.0 units on a scaleStandard Deviation 8.47
p-value: 0.7145Mixed Models Analysis
Secondary

5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) Scores

The 5 dimensions of altered states of consciousness (5D-ASC) scale is a visual analog scale (VAS) consisting of 94 items each scored on a 0-100mm VAS extrapolated to 100% scale for quantitative evaluation. These 94 items are categorized into five dimensions: oceanic boundlessness (min:0, max:2700), anxious ego dissolution (min:0, max:2100), visionary destructuralization (min:0, max:1800), auditory alterations (min:0, max:1600), and vigilance reduction (min:0, max:1200). The total score is the sum of all questions and can range from 0 to 9400. Higher scores = more alteration in state of consciousness.

Time frame: 6 weeks

Population: Full Analysis Set (FAS): All subjects in the randomized set (RAN) who were not mis-randomized.

ArmMeasureGroupValue (MEAN)
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Visionary destructuralization199.7 units on a scale
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Visionary destructuralization233.4 units on a scale
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Auditory alterations71.0 units on a scale
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Vigilance reduction90.3 units on a scale
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Vigilance reduction288.5 units on a scale
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Anxious ego dissolution41.0 units on a scale
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Total score1176.0 units on a scale
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Oceanic boundlessness479.6 units on a scale
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Oceanic boundlessness403.3 units on a scale
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Auditory alterations18.4 units on a scale
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Total scores752.9 units on a scale
Arm 2- MM-1205 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Anxious ego dissolution103.6 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Total scores131.4 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Anxious ego dissolution4.2 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Visionary destructuralization32.9 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Auditory alterations4.2 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Vigilance reduction20.0 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Oceanic boundlessness161.3 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Anxious ego dissolution19.0 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Auditory alterations32.7 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Vigilance reduction155.2 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Total score463.0 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW6 Oceanic boundlessness70.2 units on a scale
Arm 1- Placebo5 Dimensions of Altered States of Consciousness Questionnaire (5D-ASC) ScoresW1D1 Visionary destructuralization94.8 units on a scale
Secondary

Adult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)

The Adult Attention-Deficit/Hyperactivity Disorder Self-Reporting Rating Scale (ASRS) is composed of 18 questions, and uses a scale that ranges from 0-4 based on the individuals mark in either the never, rarely, sometimes, often, very often column for a possible total score of 72. A higher score corresponds to a worse severity of ADHD.

Time frame: 6 weeks

Population: Full Analysis Set (FAS): All subjects in the randomized set (RAN) who were not mis-randomized

ArmMeasureGroupValue (MEAN)Dispersion
Arm 2- MM-120Adult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Baseline for Week 248.0 units on a scaleStandard Deviation 7.01
Arm 2- MM-120Adult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Week 6 (Day 36)36.0 units on a scaleStandard Deviation 9.99
Arm 2- MM-120Adult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Week 240.2 units on a scaleStandard Deviation 9.26
Arm 2- MM-120Adult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Baseline for Week 448.6 units on a scaleStandard Deviation 7.67
Arm 2- MM-120Adult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Week 435.2 units on a scaleStandard Deviation 8.14
Arm 2- MM-120Adult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Baseline for Week 6 (Day 36)48.4 units on a scaleStandard Deviation 7.1
Arm 2- MM-120Adult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Baseline to Week 6 (Day 40)49.6 units on a scaleStandard Deviation 6.96
Arm 2- MM-120Adult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Week 6 (Day 40)31.0 units on a scaleStandard Deviation 9.18
Arm 1- PlaceboAdult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Week 6 (Day 40)31.7 units on a scaleStandard Deviation 12
Arm 1- PlaceboAdult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Week 434.9 units on a scaleStandard Deviation 9.29
Arm 1- PlaceboAdult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Week 6 (Day 36)33.1 units on a scaleStandard Deviation 11.7
Arm 1- PlaceboAdult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Baseline for Week 243.9 units on a scaleStandard Deviation 7.33
Arm 1- PlaceboAdult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Baseline to Week 6 (Day 40)44.0 units on a scaleStandard Deviation 7.86
Arm 1- PlaceboAdult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Week 236.7 units on a scaleStandard Deviation 9.38
Arm 1- PlaceboAdult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Baseline for Week 6 (Day 36)44.2 units on a scaleStandard Deviation 7.72
Arm 1- PlaceboAdult Attention-deficit/Hyperactivity Disorder Self-reporting Rating Scale (ASRS)Baseline for Week 444.6 units on a scaleStandard Deviation 7.61
Secondary

Change From Baseline in Connors' Adult ADHD Rating Scale (CAARS)

The Connors' Adult ADHD Rating Scale (CAARS) Self-Report Long Form is a 66-item measure of ADHD symptom. Responses are scored on a 4-point scale, where 0 = not at all, 1 = just a little, 2 = pretty much, and 3 = very much. Item scores are summed to three main scores which are then transformed using population-derived age- and sex-adjusted norm values to a T-score. A T-score \< 60 indicates no ADHD. A T-score of 60-64 indicates borderline ADHD. A T-score of \> 64 indicates ADHD.

Time frame: 6 weeks

Population: Full Analysis Set (FAS): All subjects in the randomized set (RAN) who were not mis-randomized

ArmMeasureGroupValue (MEAN)Dispersion
Arm 2- MM-120Change From Baseline in Connors' Adult ADHD Rating Scale (CAARS)Change from baseline to Week 2-4.0 units on a scaleStandard Deviation 5.79
Arm 2- MM-120Change From Baseline in Connors' Adult ADHD Rating Scale (CAARS)Change from baseline to Week 4-6.9 units on a scaleStandard Deviation 5.36
Arm 2- MM-120Change From Baseline in Connors' Adult ADHD Rating Scale (CAARS)Change from Baseline to Week 6 (Day 36)-5.6 units on a scaleStandard Deviation 6
Arm 2- MM-120Change From Baseline in Connors' Adult ADHD Rating Scale (CAARS)Change from Baseline to Week 6 (Day 40)-6.3 units on a scaleStandard Deviation 5.82
Arm 1- PlaceboChange From Baseline in Connors' Adult ADHD Rating Scale (CAARS)Change from Baseline to Week 6 (Day 40)-4.3 units on a scaleStandard Deviation 5.98
Arm 1- PlaceboChange From Baseline in Connors' Adult ADHD Rating Scale (CAARS)Change from baseline to Week 2-2 units on a scaleStandard Deviation 3.29
Arm 1- PlaceboChange From Baseline in Connors' Adult ADHD Rating Scale (CAARS)Change from Baseline to Week 6 (Day 36)-4.6 units on a scaleStandard Deviation 5.1
Arm 1- PlaceboChange From Baseline in Connors' Adult ADHD Rating Scale (CAARS)Change from baseline to Week 4-3.6 units on a scaleStandard Deviation 4.4
Secondary

Change From Baseline in in Clinical Global Impressions Scale (CGI-S)

The Clinical Global Impression - Severity (CGI-S) was used to assess the subject's current severity of illness at the time of the assessment relative to the clinician's past experience with patients who have the same diagnosis. The CGI-S comprises 1 Investigator-completed (or trained rater-completed) item with 7 possible ratings (1-7 points), where a higher score indicates more severe illness.

Time frame: Baseline, Week 2, Week 6

Population: Full Analysis Set (FAS): All subjects in the randomized set (RAN) who were not mis-randomized

ArmMeasureGroupValue (MEAN)Dispersion
Arm 2- MM-120Change From Baseline in in Clinical Global Impressions Scale (CGI-S)Baseline for Week 24.9 units on a scaleStandard Deviation 0.71
Arm 2- MM-120Change From Baseline in in Clinical Global Impressions Scale (CGI-S)Week 24.6 units on a scaleStandard Deviation 0.7
Arm 2- MM-120Change From Baseline in in Clinical Global Impressions Scale (CGI-S)Baseline for Week 64.9 units on a scaleStandard Deviation 0.73
Arm 2- MM-120Change From Baseline in in Clinical Global Impressions Scale (CGI-S)Week 64.0 units on a scaleStandard Deviation 0.88
Arm 1- PlaceboChange From Baseline in in Clinical Global Impressions Scale (CGI-S)Week 24.3 units on a scaleStandard Deviation 0.53
Arm 1- PlaceboChange From Baseline in in Clinical Global Impressions Scale (CGI-S)Week 63.8 units on a scaleStandard Deviation 0.85
Arm 1- PlaceboChange From Baseline in in Clinical Global Impressions Scale (CGI-S)Baseline for Week 64.8 units on a scaleStandard Deviation 0.6
Arm 1- PlaceboChange From Baseline in in Clinical Global Impressions Scale (CGI-S)Baseline for Week 24.7 units on a scaleStandard Deviation 0.62
Secondary

Changes in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) Investigator Symptom Rating Scale (AISRS) Symptoms

The Adult ADHD investigator symptom rating scale (AISRS) total score consists of 18 items from the original Attention-deficit/hyperactivity Disorder Rating Scale (ADHD-RS). The ADHD-RS includes 9 items that address symptoms of inattention, and 9 items that address symptoms of impulsivity and hyperactivity. Each item is rated from 0 to 3. The AISRS total score can range from 0 to 54. A higher score corresponds to a worse severity of ADHD.

Time frame: Week 2

Population: Full Analysis Set (FAS): All subjects in the randomized set (RAN) who were not mis-randomized

ArmMeasureGroupValue (MEAN)Dispersion
Arm 2- MM-120Changes in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) Investigator Symptom Rating Scale (AISRS) SymptomsBaseline37.5 units on a scaleStandard Deviation 5.76
Arm 2- MM-120Changes in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) Investigator Symptom Rating Scale (AISRS) SymptomsWeek 234.2 units on a scaleStandard Deviation 6.49
Arm 1- PlaceboChanges in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) Investigator Symptom Rating Scale (AISRS) SymptomsBaseline36.9 units on a scaleStandard Deviation 5.1
Arm 1- PlaceboChanges in Adult Attention-Deficit/Hyperactivity Disorder (ADHD) Investigator Symptom Rating Scale (AISRS) SymptomsWeek 232.1 units on a scaleStandard Deviation 4.96
p-value: 0.9613ANCOVA
Secondary

Mystical Experience Questionnaire 30 Items (MEQ30)

The Mystical Experience Questionnaire 30 item (MEQ30) is a 30-item questionnaire rated on a six-point scale. The scale has been used to assess mystical experiences in studies using psilocybin and LSD. Higher scores = greater mystical experiences. The total score is expressed as a percentage of the maximum possible score (0 to 100%).

Time frame: 6 weeks

Population: Full Analysis Set (FAS): All subjects in the randomized set (RAN) who were not mis-randomized.

ArmMeasureGroupValue (MEAN)
Arm 2- MM-120Mystical Experience Questionnaire 30 Items (MEQ30)Week 1 Day 122.37 percentage of maximum possible score
Arm 2- MM-120Mystical Experience Questionnaire 30 Items (MEQ30)Week 620.50 percentage of maximum possible score
Arm 1- PlaceboMystical Experience Questionnaire 30 Items (MEQ30)Week 1 Day 110.40 percentage of maximum possible score
Arm 1- PlaceboMystical Experience Questionnaire 30 Items (MEQ30)Week 65.20 percentage of maximum possible score
Secondary

Number of Patients Who Experience a Decrease in the Clinical Global Impressions Scale (CGI-S)

The Clinical Global Impression - Severity (CGI-S) was used to assess the subject's current severity of illness at the time of the assessment relative to the clinician's past experience with patients who have the same diagnosis. The CGI-S comprises 1 Investigator-completed (or trained rater-completed) item with 7 possible ratings (1-7 points), where a higher score indicates more severe illness.

Time frame: Baseline, Week 2, Week 6, Week 10

Population: Full Analysis Set (FAS): All subjects in the randomized set (RAN) who were not mis-randomized

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Arm 2- MM-120Number of Patients Who Experience a Decrease in the Clinical Global Impressions Scale (CGI-S)Baseline to Week 28 Participants
Arm 2- MM-120Number of Patients Who Experience a Decrease in the Clinical Global Impressions Scale (CGI-S)Baseline to Week 616 Participants
Arm 2- MM-120Number of Patients Who Experience a Decrease in the Clinical Global Impressions Scale (CGI-S)Baseline to Week 1017 Participants
Arm 1- PlaceboNumber of Patients Who Experience a Decrease in the Clinical Global Impressions Scale (CGI-S)Baseline to Week 211 Participants
Arm 1- PlaceboNumber of Patients Who Experience a Decrease in the Clinical Global Impressions Scale (CGI-S)Baseline to Week 615 Participants
Arm 1- PlaceboNumber of Patients Who Experience a Decrease in the Clinical Global Impressions Scale (CGI-S)Baseline to Week 1012 Participants
Secondary

Summary of Drug Effects Visual Analog Scale (VAS)

A series of single item visual Analog Scales (VAS) are used repeatedly 0 -6 hours after drug administration: The following 9 items were used in VAS (0-100 mm): any drug effect, good drug effect, bad drug effect, drug liking, fear, nausea, alteration of vision, alteration of sense of time, and the boundaries between myself and my surroundings seem to blur. VAS scores range from 0 = no effect to 100 = strong effect. The scores for each item are extrapolated to a 100% scale and presented for each time point of assessment.

Time frame: 6 hours

Population: Full Analysis Set (FAS): All subjects in the randomized set (RAN) who were not mis-randomized.

ArmMeasureGroupValue (MEAN)
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0h Drug liking37.1 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)2h Alteration of vision13.0 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)1h Fear1.4 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)1h Nausea2.7 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0h Fear2.7 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)1h Alteration of vision4.0 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)1h Boundaries blur6.0 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)3h Drug liking61.6 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)2h Any drug effect38.1 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0h Nausea1.1 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)2h Drug liking57.3 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)3h Alteration of sense of time12.3 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)2h Fear4.1 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0h Alteration of vision0 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)2h Nausea8.2 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0.5h Boundaries blur3.0 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)3h Any drug effect44.3 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0h Alteration of sense of time0 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)3h Fear2.9 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)4h Fear2.7 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)3h Boundaries blur12.7 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)3h Nausea8.0 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)2h Alteration of sense of time13.5 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)3h Alteration of vision13.9 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0h Boundaries blur0 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)4h Drug liking60.7 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)4h Any drug effect38.5 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0.5h Drug liking44.4 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)4h Nausea6.9 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)1h Alteration of sense of time8.1 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)4h Alteration of vision12.4 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0.5h Fear2.0 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)4h Alteration of sense of time12.1 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)2h Boundaries blur12.3 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)4h Boundaries blur6.9 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0.5h Nausea2.0 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)6h Any drug effect16.7 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0h Any drug effect0 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)6h Drug liking54.8 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)6h Fear2.3 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0.5h Alteration of vision3.5 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)6h Nausea3.6 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)1h Drug liking49.7 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)6h Alteration of vision4.1 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0.5h Any drug effect8.9 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)6h Alteration of sense of time6.3 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)0.5h Alteration of sense of time2.5 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)6h Boundaries blur4.1 percentage of maximum possible score
Arm 2- MM-120Summary of Drug Effects Visual Analog Scale (VAS)1h Any drug effect24.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)6h Boundaries blur0.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0.5h Alteration of sense of time3.2 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0.5h Boundaries blur0.8 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)1h Alteration of vision6.9 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)1h Alteration of sense of time6.3 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)2h Alteration of vision6.2 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)2h Alteration of sense of time4.4 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)2h Boundaries blur1.3 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)3h Any drug effect11.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)3h Alteration of sense of time4.9 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)3h Boundaries blur1.4 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)4h Any drug effect15.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)6h Drug liking49.6 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0h Any drug effect0 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0h Drug liking44.9 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0h Fear1.4 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0h Nausea0 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0h Alteration of vision0 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)1h Fear0.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0h Alteration of sense of time0 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0.5h Any drug effect11.3 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0.5h Drug liking48.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0.5h Fear2.2 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0.5h Nausea0.2 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0.5h Alteration of vision7.4 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)1h Any drug effect12.7 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)1h Drug liking51.8 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)1h Nausea1.0 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)1h Boundaries blur1.5 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)2h Any drug effect12.8 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)2h Drug liking53.3 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)2h Fear0.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)2h Nausea0.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)3h Drug liking53.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)3h Fear0.2 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)3h Nausea0.2 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)3h Alteration of vision6.5 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)4h Drug liking48.0 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)4h Fear0.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)4h Nausea0.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)4h Alteration of vision3.2 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)4h Alteration of sense of time7.0 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)4h Boundaries blur0.2 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)6h Any drug effect9.6 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)6h Fear2.1 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)6h Nausea0.2 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)6h Alteration of vision5.8 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)6h Alteration of sense of time3.0 percentage of maximum possible score
Arm 1- PlaceboSummary of Drug Effects Visual Analog Scale (VAS)0h Boundaries blur0 percentage of maximum possible score
Other Pre-specified

Pharmacokinetic Outcomes

Maximum Plasma Concentration \[Cmax\] of MM-120 in the blood at Week 1 Day 1

Time frame: 0.5, 1, 2, 3, 4, 6 hours post-dose

Population: Pharmacokinetic Set (PKS): All subjects in the randomized set (RAN) who received a dose of MM120 and had at least 1 postdose PK measurement without important protocol deviations thought to significantly affect the PK of the drug. A strategy for dealing with data affected by protocol violations and deviations was to be agreed to by the Sponsor, monitor, and pharmacokineticist, prior to clean file and code break. Subjects were analyzed according to the treatment they actually received.

ArmMeasureGroupValue (MEAN)Dispersion
Arm 2- MM-120Pharmacokinetic OutcomesPre-dose (0 hours)0 ng/mLStandard Deviation 0
Arm 2- MM-120Pharmacokinetic Outcomes0.5hours0.3250 ng/mLStandard Deviation 0.16534
Arm 2- MM-120Pharmacokinetic Outcomes1hour0.4410 ng/mLStandard Deviation 0.15686
Arm 2- MM-120Pharmacokinetic Outcomes2hours0.4270 ng/mLStandard Deviation 0.12832
Arm 2- MM-120Pharmacokinetic Outcomes3hours0.3591 ng/mLStandard Deviation 0.12493
Arm 2- MM-120Pharmacokinetic Outcomes4hours0.3066 ng/mLStandard Deviation 0.10851
Arm 2- MM-120Pharmacokinetic Outcomes6hours0.2117 ng/mLStandard Deviation 0.09361
Other Pre-specified

Pharmacokinetic Parameters (AUC0-inf and AUC0-6h)

Area under the concentration curve from time 0 to infinity (AUC0-inf), Area under the concentration curve from time 0 to 6 hour (AUC0-6h)

Time frame: 0.5, 1, 2, 3, 4, 6 hours post-dose

Population: Pharmacokinetic Set (PKS): All subjects in the randomized set (RAN) who received a dose of MM120 and had at least 1 postdose PK measurement without important protocol deviations thought to significantly affect the PK of the drug. A strategy for dealing with data affected by protocol violations and deviations was to be agreed to by the Sponsor, monitor, and pharmacokineticist, prior to clean file and code break. Subjects were analyzed according to the treatment they actually received.

ArmMeasureGroupValue (MEAN)Dispersion
Arm 2- MM-120Pharmacokinetic Parameters (AUC0-inf and AUC0-6h)AUC0-6hr1.9411 ng*h/mLStandard Deviation 0.6349
Arm 2- MM-120Pharmacokinetic Parameters (AUC0-inf and AUC0-6h)AUC0-inf3.2450 ng*h/mLStandard Deviation 1.58494
Other Pre-specified

Pharmacokinetic Parameters (Cmax)

Maximum concentration (Cmax)

Time frame: 0.5, 1, 2, 3, 4, 6 hours post-dose

Population: Pharmacokinetic Set (PKS): All subjects in the randomized set (RAN) who received a dose of MM120 and had at least 1 postdose PK measurement without important protocol deviations thought to significantly affect the PK of the drug. A strategy for dealing with data affected by protocol violations and deviations was to be agreed to by the Sponsor, monitor, and pharmacokineticist, prior to clean file and code break. Subjects were analyzed according to the treatment they actually received.

ArmMeasureValue (MEAN)Dispersion
Arm 2- MM-120Pharmacokinetic Parameters (Cmax)0.4811 ng/mLStandard Deviation 0.14279
Other Pre-specified

Pharmacokinetic Parameters (Tmax and t1/2)

Time to maximum concentration (Tmax), half life (t1/2)

Time frame: 0.5, 1, 2, 3, 4, 6 hours post-dose

Population: Pharmacokinetic Set (PKS): All subjects in the randomized set (RAN) who received a dose of MM120 and had at least 1 postdose PK measurement without important protocol deviations thought to significantly affect the PK of the drug. A strategy for dealing with data affected by protocol violations and deviations was to be agreed to by the Sponsor, monitor, and pharmacokineticist, prior to clean file and code break. Subjects were analyzed according to the treatment they actually received.

ArmMeasureGroupValue (MEAN)Dispersion
Arm 2- MM-120Pharmacokinetic Parameters (Tmax and t1/2)Tmax1.46 hoursStandard Deviation 0.706
Arm 2- MM-120Pharmacokinetic Parameters (Tmax and t1/2)t1/23.8187 hoursStandard Deviation 1.27269

Source: ClinicalTrials.gov · Data processed: Jun 21, 2026