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An Evaluation of the Safety and Efficacy of Methylone for the Treatment of PTSD

An Evaluation of the Safety and Efficacy of Methylone for the Treatment of PTSD IMPACT-2 (Investigation of Methylone for Post-Traumatic Stress Disorder [PTSD])

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06215261
Acronym
IMPACT-2
Enrollment
62
Registered
2024-01-22
Start date
2024-04-04
Completion date
2025-09-23
Last updated
2026-10-30

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

Conditions

Post Traumatic Stress Disorder

Keywords

Methylone, IMPACT-2, PTSD, Neuroplastogen, TSND-201

Brief summary

This study is evaluating the safety and efficacy of methylone in adults with PTSD. The study is conducted in two parts. * Part A is open-label and will enroll up to 15 participants with PTSD * Part B is randomized (1:1:1), single-blind and will enroll up to 45 participants with PTSD Eligible participants will enter a 3-week Treatment Period (Part A) or 4-week Treatment Period (Part B) where they will receive methylone once weekly. Following the Treatment Period, participants will enter a 6-week Follow-up Period (Part A) or 8-week Follow-up Period (Part B).

Interventions

Methylone capsules, given orally, once a week for 3 weeks (Part A) or 4 weeks (Part B)

Sponsors

Transcend 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 70 Years
Healthy volunteers
No

Inclusion criteria

* Meets DSM-5 criteria for severe PTSD diagnosis, with a symptom duration of at least 6 months. * Tried at least one treatment for PTSD (either psychotherapy or pharmacological treatment). * Proficient in reading and writing in local language sufficient to complete questionnaires. * Free from any other clinically significant illness or disease.

Exclusion criteria

* Primary diagnosis of any other DSM-5 disorder. * Body mass index (BMI) \<18kg/m2 or ≥40 kg/m2. * Smokes an average of \>10 cigarettes and/or e-cigarettes per day. * Uncontrolled hypertension at Screening. * Use of prohibited concomitant medications or therapies. * Current or previous history of clinically significant cardiovascular/cerebrovascular conditions.

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Clinician-Administered PTSD Scale for the DSM-5 (CAPS-5) Total Severity Score9 weeks (Part A) / 12 weeks (Part B)The CAPS-5 is a structured interview designed to assess PTSD symptom severity. The total severity score ranges from 0 to 80, with a higher score indicating more severe symptoms.

Secondary

MeasureTime frameDescription
Change From Baseline in Montgomery-Asberg Depression Rating Scale (MADRS) Total Score9 weeks (Part A) / 12 weeks (Part B)The MADRS is a 10-item, clinician-rated scale designed to assess severity of depression. The total score ranges from 0 to 60, with a higher score indicating more severe depression.
Change From Baseline in PTSD Checklist for DSM-5 (PCL-5)9 weeks (Part A) / 12 weeks (Part B)The PCL-5 is a 20-item, patient-rated scale designed to measure severity of PTSD symptoms. The total score ranges from 0 to 80, with a higher score indicating more severe PTSD symptoms.
Change From Baseline in Sheehan Disability Scale (SDS)9 weeks (Part A) / 12 weeks (Part B)The SDS is a 3-item, patient-rated scale designed to measure disability and impairment across three domains: work/school, social life, and family life/home responsibilities. Each domain is scored from 0 to 10, with higher scores representing greater disability. Total scores range from 0 to 30, with higher scores representing greater disability.
Incidence of Treatment-emergent Adverse Events (TEAEs)9 weeks (Part A) / 12 weeks (Part B)Types and rates of adverse events (Results are presented in the Adverse Events section)

Countries

Australia, United Kingdom, United States

Baseline characteristics

Characteristic—
Age, Continuous44.5 Years
STANDARD_DEVIATION 10.37
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants
Race (NIH/OMB)
Asian
3 Participants
Race (NIH/OMB)
Black or African American
3 Participants
Race (NIH/OMB)
More than one race
4 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
47 Participants
Sex: Female, Male
Female
10 Participants
Sex: Female, Male
Male
3 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 150 / 170 / 150 / 15
other
Total, other adverse events
15 / 1517 / 1714 / 1514 / 15
serious
Total, serious adverse events
1 / 150 / 170 / 150 / 15

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Oct 31, 2026