NCT07456696 · Transcend Therapeutics
An Evaluation of the Safety and Efficacy of TSND-201 for the Treatment of PTSD (EMPOWER-1)
(EMPOWER-1)
What this study is about
This study is evaluating the safety and effectiveness of TSND-201 in adults with PTSD. Eligible participants will enter a 4-week Treatment Period where they will be randomly assigned 1:1:1 to receive one of two doses of TSND-201 or placebo, once per week. Following the Treatment Period, participants will enter an 8-week Follow-up Period.
View original scientific description
This study is evaluating the safety and efficacy of TSND-201 in adults with PTSD. Eligible participants will enter a 4-week Treatment Period where they will be randomized 1:1:1 to receive one of two doses of TSND-201 or placebo, once per week. Following the Treatment Period, participants will enter an 8-week Follow-up Period.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Meets the DSM-5 criteria for current PTSD diagnosis, with a symptom duration of at least 6 months.
- Tried at least one pharmacological treatment for PTSD or trauma-focused psychotherapy.
- Proficient in communication (verbal and reading) to complete interviews and written questionnaires.
- Free from any other clinically significant illness or disease.
Exclusion criteria
- Primary diagnosis of any other DSM-5 disorder.
- Body mass index (BMI) \<18 kg/m2 or ≥40 kg/m2.
- Unable to refrain from nicotine use for at least 8 hours.
- Use of prohibited concomitant medications or therapies.
- Current or previous history of clinically significant cardiovascular (including current uncontrolled hypertension) / cerebrovascular conditions.
Where
- Tucson, Arizona
- Little Rock, Arkansas
- La Jolla, California
- Los Angeles, California
- Montclair, California
- Oceanside, California
- Orange, California
- San Juan Capistrano, California
- Evergreen, Colorado
- Jacksonville, Florida
- Lauderhill, Florida
- Maitland, Florida
And 20 more locations — see the full list below.
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 12, 2026 · Source of record for eligibility and locations