A Study to Evaluate the Effectiveness of DT-101 in Patients With Depression (Tarian-1)

August 25, 2026 updated by: Draig Therapeutics Ltd

A Phase 2 Double-blind, Randomised, Placebo-controlled Study to Evaluate the Efficacy, Safety, Pharmacokinetics, and Pharmacodynamics of DT-101 in Adults With Major Depressive Disorder (MDD)

The goal of this clinical trial is to learn if DT-101 can treat depression in adults. The effect of DT-101 will be compared to placebo. Subjects will attend the clinic every couple of weeks complete general health checks and complete questionnaires.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The purpose of this study is to compare DT-101 and placebo in adult participants with MDD. The study will also evaluate how safe and well tolerated the study drug is. The clinical study staff will check participants' suitability to take part in the clinical research study by performing physical and neurological examinations, obtaining blood and urine samples, conducting clinical assessments and reviewing medical and treatment history. These tests and assessments will continue throughout the study with the purpose of checking the participants' ongoing suitability and to collect data to analyze the effect that DT-101 may have on their depression symptoms. Participants will also have blood samples taken to allow analysis of how DT-101 is absorbed and used by the body (PK sampling), some blood samples may be retained in order to perform future research that may be useful when looking at whether genetics affects how a person responds to DT-101 (PGx sampling)

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
300

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Bulgaria
      • Kazanlak, Bulgaria, 6100
      • Plovdiv, Bulgaria, 4000
      • Sofia, Bulgaria, 1606
      • Sofia, Bulgaria, 1113
      • Sofia, Bulgaria, 1202
      • Sofia, Bulgaria, 1510
      • Vratsa, Bulgaria, 3000
  • Czechia
      • Ostrava, Czechia, 70868
      • Prague, Czechia, 10000
      • Říčany, Czechia, 25101
  • Poland
      • Gdansk, Poland, 80-952
      • Katowice, Poland, 40-156
      • Poznan, Poland, 60-835
  • United Kingdom
      • Chester, United Kingdom, CH2 1HX
      • Eastbourne, United Kingdom, BN23 5UZ
      • Glasgow, United Kingdom, PA1 1JS
      • London, United Kingdom, SE5 8AF
      • London, United Kingdom, EC2Y 8EA
      • Nottingham, United Kingdom, NG7 2TU
      • Oxford, United Kingdom, OX3 7JX
  • United States
    • Arkansas
      • Bentonville, Arkansas, United States, 72712
      • Little Rock, Arkansas, United States, 72211
    • California
      • Oceanside, California, United States, 92056
      • San Diego, California, United States, 92103
      • Torrance, California, United States, 90502
    • Florida
      • Miami, Florida, United States, 33166
      • New Port Richey, Florida, United States, 34652
      • Orlando, Florida, United States, 32803
    • Georgia
      • Atlanta, Georgia, United States, 30331
      • Decatur, Georgia, United States, 30030
    • Maryland
      • Gaithersburg, Maryland, United States, 20877
    • Massachusetts
      • Watertown, Massachusetts, United States, 02472
    • Mississippi
      • Flowood, Mississippi, United States, 39232
    • Nevada
      • Las Vegas, Nevada, United States, 89102
    • New Jersey
      • Marlton, New Jersey, United States, 08009
    • New York
      • New York, New York, United States, 10312
    • Pennsylvania
      • Media, Pennsylvania, United States, 19372
    • Texas
      • Austin, Texas, United States, 78737
      • Austin, Texas, United States, 78754
      • DeSoto, Texas, United States, 75115
      • Richardson, Texas, United States, 75243
      • Wichita Falls, Texas, United States, 76309
    • Washington
      • Bellevue, Washington, United States, 98004

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • The participant is able to read, understand and communicate in the local language used at the study site, and is willing to provide written informed consent
  • Male or female (assigned at birth, inclusive of all gender identities) participant must be 18 to 75 years of age, inclusive at the time of signing the informed consent.
  • Has recurrent depression (defined as at least one prior episode excluding the current one), as diagnosed by DSM 5-TR (Diagnostic and Statistical Manual of Mental Disorders, 2022).

Exclusion Criteria:

  • Pregnant or breastfeeding or plans to become pregnant during the study.
  • Unstable medical condition or unstable chronic disease.
  • Significant neurological abnormality.
  • History of moderate or severe alcohol or drug use disorder as per DSM-5-TR in the 6 months prior to Screening.
  • History of seizure.
  • In the investigator's opinion, the participant is not capable of adhering to the protocol requirements.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Placebo Comparator: Placebo
Drug: Placebo
Placebo
Experimental: DT-101 A
Drug: DT-101
DT-101 A
Drug: DT-101
DT-101 B
Experimental: DT-101 B
Drug: DT-101
DT-101 A
Drug: DT-101
DT-101 B

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Change from baseline in total Montgomery Åsberg depression rating scale (MADRS) score, at Day 42
Time Frame: from enrollment to day 42
from enrollment to day 42

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Change from baseline in Clinician Global Impression of severity (CGI-S), at Day 42
Time Frame: From enrollment until day 42
From enrollment until day 42

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Draig Therapeutics Ltd

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 16, 2025

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
December 22, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 23, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 24, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 26, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 25, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • DT-101/201

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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