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Generalized Anxiety DisorderPhase 3NCT06741228

A Phase 3 Trial of DT120 for Generalized Anxiety Disorder (Voyage)

A Phase 3 study testing DT120 in people with Generalized Anxiety Disorder, run by Definium Therapeutics US, Inc. at 34 sites in United States.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

A Phase 3 Double-blind, Placebo-controlled Study (Part A) with an Open-label Extension (Part B) Evaluating DT120 Compared to Placebo in Generalized Anxiety Disorder - Voyage Read more about this study

Who is it for?
Ages 18 to 74 years
Conditions the study is for
Generalized Anxiety Disorder
What is being tested?
DT120
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
214 participants
Where
34 sitesUnited States
Study dates
11 Dec 2024to Apr 2027
Phase
Phase 3
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 74 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Diagnosis of GAD per DSM-5
  • Male or female aged 18 to 74
  • HAM-A Total Score ≥20

Who cannot join

  • Certain psychiatric disorders (other than generalized anxiety disorder)
  • First degree relative with or lifetime history of a psychotic disorder or bipolar disorder
  • Current diagnosis of alcohol or substance use disorder (excluding nicotine and caffeine)
  • Any clinically significant unstable illness

Trial locations and contacts

34 sites in 1 country.

34 sites in 1 country

United States34 sites
  • Atlanta Center for Medical Research

    Atlanta, Georgia, 30331

  • University of Texas at Austin

    Austin, Texas, 78712

  • Austin Clinical Trial Partners

    Austin, Texas, 78737

  • BioBehavioral Research of Austin

    Austin, Texas, 78759

  • Memory Clinic Inc.

    Bennington, Vermont, 05201

  • Adams Clinical Boston

    Boston, Massachusetts, 02116

  • Uptown Research Institute

    Chicago, Illinois, 60640

  • Cleveland Clinic Lutheran Hospital

    Cleveland, Ohio, 44113

  • FutureSearch Trials of Dallas, LLC

    Dallas, Texas, 75231

  • iResearch Atlanta

    Decatur, Georgia, 30030

  • Mountain View

    Denver, Colorado, 80209

  • Adams Clinical Dallas

    DeSoto, Texas, 75115

  • Cedar Clinical Research

    Draper, Utah, 84020

  • Lighthouse Psychiatry

    Gilbert, Arizona, 85234

  • Clinical Neuroscience Solutions Inc.

    Jacksonville, Florida, 32256

  • Kadima Neuropsychiatry Institute

    La Jolla, California, 92037

  • Segal Trials

    Lauderhill, Florida, 33319

  • Hassman Research Institute

    Marlton, New Jersey, 08053

  • Clinical Neuroscience Solutions, Inc.

    Memphis, Tennessee, 38119

  • Scranton Medical Institute

    Moosic, Pennsylvania, 18507

  • Spectrum Neuroscience and Treatment Institute

    New York, New York, 10021

  • Adams Clinical Harlem

    New York, New York, 10029

  • New York State Psychiatric Institute (NYSPI)

    New York, New York, 10032

  • Coastal Carolina Research Center

    North Charleston, South Carolina, 29405

  • Inner Space Research

    Orem, Utah, 84058

  • Adams Clinical Philadelphia

    Philadelphia, Pennsylvania, 19104

  • Summit Headlands LLC

    Portland, Oregon, 97210

  • UCSF Department of Neurology

    San Francisco, California, 94158

  • Psychedelic Science Institute

    Santa Monica, California, 90404

  • CenExel iResearch, LLC

    Savannah, Georgia, 31405

  • Scottsdale Research Institute

    Scottsdale, Arizona, 85022

  • Seattle Neuropsychiatric Treatment Center

    Seattle, Washington, 98104

  • Adams Clinical Bronx

    The Bronx, New York, 10461

  • Adams Clinical Watertown

    Watertown, Massachusetts, 02472

Other trials in United States

About this study

Official title: A Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled, 12-Week Study (Part A) With a 40-Week Open-label Extension (Part B) Evaluating the Efficacy and Safety of Oral DT120 Compared to Placebo in the Treatment of Adults With Generalized Anxiety Disorder - Voyage

A Phase 3 Double-blind, Placebo-controlled Study (Part A) with an Open-label Extension (Part B) Evaluating DT120 Compared to Placebo in Generalized Anxiety Disorder - Voyage

Read the detailed description

The study will enroll up to 200 participants aged 18 to 74 years, inclusive with a Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) confirmed primary diagnosis of GAD and a minimum HAM-A total score of at least 20 at Screening and Baseline without clinically relevant medical or psychiatric history.

The study consists of a 12-week randomized, double-blind, single-dose administration period evaluating DT120 versus placebo, followed by a 40-week extension phase with the opportunity for open-label treatment. During this phase, participants will be monitored and evaluated for potential treatment with DT120 based on pre-specified safety and symptom severity criteria.

Being tested
Placebo, DT120
Medical subject headings
Generalized Anxiety Disorder

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • PlaceboOther

    A substance that is designed to have no therapeutic value

  • DT120Drug

    Also called MM120, lysergide tartrate, LSD D-Tartrate

    A psychoactive substance that mediates effects mainly through an agonist activity in the serotonin 2A receptor (5-HT2A)

Study groups in NCT06741228
Study groupRoleWhat they receive
Arm 1 - PlaceboPlacebo comparatorA substance that is designed to have no therapeutic value
Receives: Other: Placebo
Arm 2 - 100µg DT120ExperimentalA psychoactive substance that mediates effects mainly through an agonist activity in the serotonin 2A receptor (5-HT2A)
Receives: Drug: DT120

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change from Baseline in Hamilton Anxiety Rating Scale (HAM-A) total score at Week 12

    The HAM-A consists of the following 14 items that encompass both psychological and somatic symptoms of anxiety. Each item is scored on a scale of 0 (not present) to 4 (severe), with a total score range of 0-56, where <17 indicates mild severity, 18-24 mild to moderate severity and 25-30 moderate to severe.

    Measured: Baseline to Week 12

Secondary outcomes (23)
  1. Change from Baseline in HAM-A total score at Week 8, Week 4, Week 2, and Week 1

    The HAM-A consists of the following 14 items that encompass both psychological and somatic symptoms of anxiety. Each item is scored on a scale of 0 (not present) to 4 (severe), with a total score range of 0-56, where <17 indicates mild severity, 18-24 mild to moderate severity and 25-30 moderate to severe.

    Measured: Week 8, Week 4, Week 2, and Week 1

  2. HAM-A response (reduction from Baseline score of ≥50%) at each timepoint assessed during the 12-week double-blind period

    The HAM-A consists of the following 14 items that encompass both psychological and somatic symptoms of anxiety. Each item is scored on a scale of 0 (not present) to 4 (severe), with a total score range of 0-56, where <17 indicates mild severity, 18-24 mild to moderate severity and 25-30 moderate to severe.

    Measured: Baseline to Week 12

  3. HAM-A remission (total score ≤7) at each timepoint assessed during the 12-week double-blind treatment period

    The HAM-A consists of the following 14 items that encompass both psychological and somatic symptoms of anxiety. Each item is scored on a scale of 0 (not present) to 4 (severe), with a total score range of 0-56, where <17 indicates mild severity, 18-24 mild to moderate severity and 25-30 moderate to severe.

    Measured: Baseline to Week 12

  4. Clinical Global Impression - Improvement (CGI-I) Scale score at each timepoint assessed during the 12-week double-blind period

    The CGI-I scale is used to measure the clinician's assessment of how much the participant's illness has improved or worsened relative to Baseline (Visit 2). The CGI-I comprises one item with 7 possible ratings (1-7 points), where a lower score indicates improvement, and a higher score indicates worsening.

    Measured: Day 2 to Week 12

  5. Change from Baseline throughout the 12-week double-blind period at each timepoint assessed in Clinical Global Impression - Severity (CGI-S) Scale score

    The CGI-S scale assesses the clinician's impression of the participant's current severity of illness relative to the clinician's experience with patients who have the same diagnosis. The CGI-S comprises one item with 7 possible ratings (1-7 points), where a higher score indicates more severe illness.

    Measured: Baseline to Week 12

  6. Change from Baseline throughout the 12-week double-blind period at each timepoint assessed in Patient Global Impression - Severity (PGI-S) Scale score

    The PGI scale is the patient-reported outcome (PRO) counterpart to the CGI scale. The PGI-S comprises one participant-completed item with 5 possible ratings (1-5) where a higher score indicates more severe illness.

    Measured: Baseline to Week 12

  7. Change from Baseline throughout the 12-week double-blind period at each timepoint assessed in - Montgomery-Åsberg Depression Rating Scale (MADRS) total score

    The MADRS is used to assess depression severity and to detect changes due to antidepressant treatment. The MADRS includes 10 clinician-completed items. Each of the 10 questions is scored with a range of 0-6 points. An item score of 0 indicates item not present or normal, while an item score of 6 indicates severe or continuous presence of the symptoms. The total possible score is 60, and higher scores represent a more severe condition.

    Measured: Baseline to Week 12

  8. Change from Baseline throughout the 12-week double-blind period at each timepoint assessed in -Work Productivity and Activity Impairment Specific Health Problem Questionnaire (WPAI-SHP)

    The WPAI-SHP is a 6-item questionnaire, with a recall period of the past 7 days. The WPAI measures impairments in both paid work and unpaid work. It measures absenteeism, presenteeism as well as impairment in unpaid activity because of the health problem under study.

    Measured: Baseline to Week 12

  9. Change from Baseline throughout the 12-week double-blind period at each timepoint assessed in - EuroQol-5 Dimensions - 5 Levels (EQ-5D-5L)

    The EuroQol 5 Dimension 5 Level (EQ-5D-5L) is a self-reported outcome measure used to evaluate health outcomes over a wide range of health conditions and treatments. The EQ-5D consists of the EQ-5D descriptive system and the EQ visual analogue scale (VAS).

    Measured: Baseline to Week 12

  10. Change from Baseline in the Changes in Sexual Functioning Questionnaire (CSFQ-14) total score at each timepoint assessed during the double-blind period

    The CSFQ-14 is a structured self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning that consists of 14 items measuring sexual functioning as a total score (14 items). There is a male and female version of the CSFQ-14 scale and a total score of less than 47 for men and less than 41 for women indicates sexual dysfunction. Lower scores are associated with worsened sexual functioning.

    Measured: Baseline to Week 12

  11. Percent of men and women with normal and abnormal sexual functioning at each timepoint assessed during the double-blind period

    The CSFQ-14 is a structured self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning that consists of 14 items measuring sexual functioning as a total score (14 items). There is a male and female version of the CSFQ-14 scale and a total score of less than 47 for men and less than 41 for women indicates sexual dysfunction. Lower scores are associated with worsened sexual functioning.

    Measured: Baseline to Week 12

  12. Percent of participants requiring one, two, three, four, or five doses of DT120 during the 52-week study (Part A and Part B) as assessed by participants meeting protocol-specified retreatment criteria during the 40-week open-label period

    Percent of participants requiring one, two, three, four, or five doses of DT120 during the 52-week study (Part A and Part B) as assessed by participants meeting protocol-specified retreatment criteria during the 40-week open-label period

    Measured: Day 1 to Week 52

  13. Time to first treatment or lack of efficacy in the open-label period (Part B)

    Measured as time from first dosing in the Double-blind period to participant meeting HAM-A criteria for re-dose or meeting criteria for lack of efficacy

    Measured: Day 1 to Week 52

  14. Need for DT120 treatment as assessed by the average number of DT120 treatments during the study

    Average number of treatments assessed from first dose in the double-blind period through completion of the open label extension.

    Measured: Day 1 to Week 52

  15. HAM-A response (reduction from Baseline score of ≥50%) at each timepoint assessed during the 40-week open-label period

    The HAM-A consists of the following 14 items that encompass both psychological and somatic symptoms of anxiety. Each item is scored on a scale of 0 (not present) to 4 (severe), with a total score range of 0-56, where <17 indicates mild severity, 18-24 mild to moderate severity and 25-30 moderate to severe.

    Measured: 40 week open label period

  16. HAM-A remission (total score ≤7) at each timepoint assessed during the 40-week open-label period

    The HAM-A consists of the following 14 items that encompass both psychological and somatic symptoms of anxiety. Each item is scored on a scale of 0 (not present) to 4 (severe), with a total score range of 0-56, where <17 indicates mild severity, 18-24 mild to moderate severity and 25-30 moderate to severe.

    Measured: 40 week open label period

  17. Change from Double-blind Baseline throughout the 40-week open-label period at each timepoint assessed in Clinical Global Impression - Severity (CGI-S) Scale score

    The CGI-S scale assesses the clinician's impression of the participant's current severity of illness relative to the clinician's experience with patients who have the same diagnosis. The CGI-S comprises one item with 7 possible ratings (1-7 points), where a higher score indicates more severe illness.

    Measured: Baseline to Week 52

  18. Change from Double-blind Baseline throughout the 40-week open-label period at each timepoint assessed in Patient Global Impression - Severity (PGI-S) Scale score

    The PGI scale is the patient-reported outcome (PRO) counterpart to the CGI scale. The PGI-S comprises one participant-completed item with 5 possible ratings (1-5) where a higher score indicates more severe illness.

    Measured: Baseline to Week 52

  19. Change from Double-blind Baseline throughout the 40-week open-label period at each timepoint assessed in MADRS total score

    The MADRS is used to assess depression severity and to detect changes due to antidepressant treatment. The MADRS includes 10 clinician-completed items. Each of the 10 questions is scored with a range of 0-6 points. An item score of 0 indicates item not present or normal, while an item score of 6 indicates severe or continuous presence of the symptoms. The total possible score is 60, and higher scores represent a more severe condition.

    Measured: Baseline to Week 52

  20. Change from Double-blind Baseline throughout the 40-week open-label period at each timepoint assessed in WPAI-SHP

    The WPAI-SHP is a 6-item questionnaire, with a recall period of the past 7 days. The WPAI measures impairments in both paid work and unpaid work. It measures absenteeism, presenteeism as well as impairment in unpaid activity because of the health problem under study.

    Measured: Baseline to Week 52

  21. Change from Double-blind Baseline throughout the 40-week open-label period at each timepoint assessed in EQ-5D-5L

    The EuroQol 5 Dimension 5 Level (EQ-5D-5L) is a self-reported outcome measure used to evaluate health outcomes over a wide range of health conditions and treatments. The EQ-5D consists of the EQ-5D descriptive system and the EQ visual analogue scale (VAS).

    Measured: Baseline to Week 52

  22. CSFQ-14 total score at each timepoint assessed during the open-label period

    The CSFQ-14 is a structured self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning that consists of 14 items measuring sexual functioning as a total score (14 items). There is a male and female version of the CSFQ-14 scale and a total score of less than 47 for men and less than 41 for women indicates sexual dysfunction. Lower scores are associated with worsened sexual functioning.

    Measured: 40 week open label period

  23. Percent men and women with normal and abnormal sexual functioning at each timepoint assessed during the open-label period

    The CSFQ-14 is a structured self-reported questionnaire designed to measure illness- and medication-related changes in sexual functioning that consists of 14 items measuring sexual functioning as a total score (14 items). There is a male and female version of the CSFQ-14 scale and a total score of less than 47 for men and less than 41 for women indicates sexual dysfunction. Lower scores are associated with worsened sexual functioning.

    Measured: 40 week open label period

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted18 Dec 2024
  2. Study start11 Dec 2024
  3. Primary completion15 Jul 2026
  4. Study completionApr 2027 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
214 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06741228
Sponsor's protocol ID
MM120-300
Status last verified
Jun 2026
First submitted
16 Dec 2024
Last updated
25 Sep 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Publications

  • Jacobs E, Zahid Z, Hinkle J, Nayak S, Yaden DB. Psychedelic medicine: mechanisms, evidence, and translation to practice. BMJ. 2026 Feb 23;392:e081723. doi: 10.1136/bmj-2024-081723.

    PubMed 41730563

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing DT120 in people with Generalized Anxiety Disorder, run by Definium Therapeutics US, Inc. at 34 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: under way, not looking for participants, as of the sponsor's last update on 25 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 34 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change from Baseline in Hamilton Anxiety Rating Scale (HAM-A) total score at Week 12 (time frame: Baseline to Week 12). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06741228, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Sep 2026.

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