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56 clinical studies listed.
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Tundra lists 56 Depressive Disorder, Major clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
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NCT06308653
Psilocybin for Major Depressive Disorder (MDD)
Approximately 240 eligible adult participants (≥18 years old) who meet Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR) criteria for Major Depressive Disorder (MDD) will be enrolled. Participants will be randomly assigned to receive a single oral dose of Psilocybin 25 mg, Psilocybin 5 mg, or inactive placebo. The purpose of this study is to evaluate the efficacy, safety, and tolerability of Psilocybin 25 mg versus placebo in adults with MDD, as assessed by the difference between groups in change in depressive symptoms from Baseline to Day 43 post-dose, and to characterize the durability of initial treatment effect and subsequent response to optional Psilocybin 25 mg re-administration(s) during the 1-year Follow-up Period.
Gender: All
Ages: 18 Years - Any
Updated: 2026-05-20
17 states
NCT05232032
Pharmaco-Neuroimaging Studies of Approach/Avoidance Behaviors and Post-Mortem Studies: Pharmacological Manipulation
The study will investigate whether a nociceptin receptor antagonist will normalize neural and behavioral processes of approach/avoidance decision-making in unmedicated individuals with major depressive disorder (MDD) and anxiety disorders. More specifically, the study aims to investigate dysregulation within (1) corticostriatal-midbrain circuitry and (2) nociceptin/orphanin FQ peptide and the nociceptin receptor (NOPR).
Gender: All
Ages: 18 Years - 45 Years
Updated: 2026-05-18
1 state
NCT05210153
Personalized Sertraline Dosing in Patients With Depression
The aims of this study are to: 1. Determine the proportion of participants who are underdosed or overdosed under recommended dosing regimen of sertraline for the depression treatment (100 mg/day) 2. Determine and quantify clinical benefits of personalized sertraline dosing regimen based on the sertraline blood level monitoring 3. Retrospectively estimate whether the information on CYP2C19 genotype is useful in prediction of sertraline blood level.
Gender: All
Ages: 18 Years - 60 Years
Updated: 2026-05-15
NCT04533529
A Study of Seltorexant as Adjunctive Therapy to Antidepressants in Adult and Elderly Participants With Major Depressive Disorder With Insomnia Symptoms Who Have Responded Inadequately to Antidepressant and Long-term Safety Extension Treatment With Seltorexant
The purpose of this study is to assess the efficacy of seltorexant compared with placebo as adjunctive therapy to an antidepressant in improving depressive symptoms in participants with major depressive disorder with insomnia symptoms (MDDIS) who have had an inadequate response to current antidepressant therapy with an selective serotonin reuptake inhibitor (SSRI) or serotonin-norepinephrine reuptake inhibitor (SNRI) in double-blind treatment phase and to assess the long-term safety and tolerability of seltorexant as adjunctive therapy to an antidepressant in participants with major depressive disorder (MDD) in open-label treatment phase.
Gender: All
Ages: 18 Years - 74 Years
Updated: 2026-05-12
18 states
NCT07227454
A Study to Evaluate the Efficacy and Safety of Esketamine for Reduction of Symptoms of Major Depressive Disorder
The purpose of this study is to evaluate how well JNJ-54135419 works (efficacy) in addition to comprehensive standard of care (SoC) in rapidly reducing the symptoms of major depressive disorder (MDD, a mental disorder characterized by a persistent feeling of sadness and loss of interest in activities) as compared with psychoactive placebo (does not contain JNJ-54135419) plus SoC in adolescent participants with acute suicidal ideation or behavior.
Gender: All
Ages: 12 Years - 17 Years
Updated: 2026-05-08
3 states
NCT06559306
Phase 3 Study of Adjunctive Treatment With Seltorexant in Adult and Elderly Participants With Major Depressive Disorder and Insomnia Symptoms
The purpose of this study is to know how well seltorexant works, and also to evaluate safety and maintenance effect of seltorexant compared with placebo as an adjunctive therapy to an antidepressant in improving depressive symptoms in participants with major depressive disorder with insomnia symptoms (MDDIS) who have had an inadequate response to current antidepressant therapy with a selective serotonin reuptake inhibitor (SSRI) or serotonin-norepinephrine reuptake inhibitor (SNRI).
Gender: All
Ages: 18 Years - 74 Years
Updated: 2026-05-08
22 states
NCT07258485
A Study to Evaluate Sleep Electroencephalogram (EEG) Features (Brain Activity While Sleeping) in Participants With Major Depressive Disorder (MDD)
The purpose of this study is to evaluate sleep in participants with Major Depressive Disorder with moderate to severe insomnia symptoms (MDDIS) or MDD with no or mild insomnia symptoms (non-MDDIS), using an at-home sleep Electroencephalogram (EEG; a device that records brain activity during sleep). The study also aims to examine the association between objective sleep EEG features (measured using devices) and subjective sleep measures (self-reported experiences, such as how a person feels about their sleep) in participants with MDDIS or non-MDDIS.
Gender: All
Ages: 18 Years - 74 Years
Updated: 2026-05-08
13 states
NCT07573176
A Study of Seltorexant as Monotherapy in Adults and Elderly Participants With Major Depressive Disorder
The main purpose of this study is to assess how well the study drug (JNJ-42847922) works (efficacy) compared with placebo in improving depressive symptoms in participants with major depressive disorder (\[MDD\], a common mood disorder that causes a lasting feeling of sadness and a loss of interest in everyday activities) in double-blind treatment phase. Further, to evaluate long-term safety and tolerability of JNJ-42847922 in participants with MDD in the open label treatment phase.
Gender: All
Ages: 18 Years - 74 Years
Updated: 2026-05-08
4 states
NCT06785012
A Study to Explore the Efficacy of JNJ-89495120 in the Treatment of Major Depressive Disorder
The purpose of this study is to evaluate how well JNJ-89495120 works (anti-depressant effects) and how well it is tolerated as compared to placebo on reducing the symptoms of depression in participants with major depressive disorder (MDD).
Gender: All
Ages: 18 Years - 64 Years
Updated: 2026-05-08
19 states
NCT05915013
Alpha-Amino-3-Hydroxy-5-Methyl-4- Isoxazole Propionic Acid Receptor Components of the Anti-Depressant Ketamine Response
The proposed study will assess the combined effect of perampanel and ketamine on the anti-depressant response in individuals with treatment resistant depression. The purpose of this study is to test the hypothesis that stimulation of Alpha-Amino-3-Hydroxy-5-Methyl-4- Isoxazole Propionic Acid receptors (AMPAR) is critical to the anti-depressant response of ketamine.
Gender: All
Ages: 18 Years - 60 Years
Updated: 2026-05-06
1 state
NCT04984512
The Efficacy And Safety Of Mitizodone Phosphate Tablets In The Treatment of Patient With Major Depressive Disorder
This is a phase 2 and 3 adaptive design study for Mitizodone Phosphate,to find out an optimal dose in phase 2 period and confirm the result an efficacy and safety in phase 3 period.Dose-finding will be done after 8 weeks of double-blinded treatment in phase 2 period and will be assessed by both efficacy and safety from 3 dose groups of Mitizodone Phosphate.The dose be found in phase 2 period will be evaluated on efficacy and safety when compared with placebo in phase 3 period with a duration of 8 weeks treatment.The target subjects are patients with MDD.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-05-05
1 state
NCT06860958
Roflumilast as an Adjunct to Antidepressants in Major Depressive Disorder Patients
Major depressive disorder (MDD) is one of the most common psychiatric disorders with serious socioeconomic consequences on daily life and health care costs. Despite the advent of newer antidepressants that target monoamine pathways, nearly 50% of patients have no response to first-line antidepressant therapy. Thus, a combination of medications with different strategies at the beginning of treatment could provide further therapeutic benefits to MDD patients
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-05-04
NCT06982820
Self Neuro-modulation Therapy for Major Depressive Disorder (MDD) With Anhedonia
The purpose of this research is to learn more about a new treatment for individuals with Major Depressive Disorder (MDD) with heightened symptoms of anhedonia (i.e. loss of pleasure or interest in activities). The treatment is called Prism, and it is a software device intended for a novel form of neurofeedback training to be used in a clinic setting. During this study, the subject will use different techniques to measure brain activities, including magnetic resonance imaging (MRI) and electroencephalography (EEG).
Gender: All
Ages: 22 Years - 75 Years
Updated: 2026-05-01
2 states
NCT06546917
bWell-D Pilot Randomized Controlled Trial
The goal of this clinical trial is to determine the acceptability, feasibility, and validity of the bWell Cognitive Care Platform for Depression (bWell-D), a novel Virtual Reality (VR) cognitive assessment and remediation tool, in depressed populations. The main questions are: * Do patients with Major Depressive Disorder (MDD) find the bWell-D cognitive assessment battery and protocol feasible, tolerable, and acceptable? * Do patients with Major Depressive Disorder (MDD) find the 8 week bWell-D remediation protocol feasible, tolerable, and acceptable? Following initial cognitive assessment, researchers will assess feasibility outcomes in the bWell remediation arm to a VR scenes experience arm to learn more about the feasibility of bWell for cognitive assessment and remediation. Patients will: * Complete an initial bWell cognitive assessment session * Randomized to either receive bWell cognitive remediation or a VR scenes experience twice a week for eight weeks * Complete cognitive/functional/clinical assessments and EEG at baseline, midpoint and endpoint of the remediation protocol, as well as two MRI scans and measures of tolerability, engagement, and enjoyment
Gender: All
Ages: 19 Years - 55 Years
Updated: 2026-04-28
1 state
NCT03586427
Zelquistinel in the Treatment of Major Depressive Disorder
The purpose of this study is to evaluate the efficacy at 1 day post initial oral dose of zelquistinel (AGN-241751) compared with placebo in participants with Major Depressive Disorder (MDD).
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-04-27
12 states
NCT05841030
A Study in Participants With Major Depressive Disorder (MDD) With Anhedonia and Inadequate Response to Current Antidepressant Therapy Including a Selective Serotonin Reuptake Inhibitor (SSRI) or Serotonin Norepinephrine Reuptake Inhibitor (SNRI)
The purpose of this study is to assess the socio-demographic, disease-related and treatment-related characteristics, and the standard of care (SOC) treatment patterns of participants with major depressive disorder (MDD) with anhedonia with inadequate response to their current antidepressant treatments and treated according to the standard of care treatment.
Gender: All
Ages: 18 Years - 74 Years
Updated: 2026-04-23
13 states
NCT06254144
Neuroimaging Study for Decoding Emotional States and Identifying Neural Circuits to Disengage From Negative Thinking
The purpose of this study is to decode different thinking states from the brain activation patterns and identify the neural circuits that disengage from these thinking patterns using functional magnetic resonance imaging (fMRI) measurement in individuals with major depressive disorder.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-04-23
1 state
NCT03866174
A Study of Psilocybin for Major Depressive Disorder (MDD)
One hundred participants, ages 21 to 65, who meet Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria for major depressive disorder (MDD) will be stratified by study site and randomized with a 1-to-1 allocation under double-blind conditions to receive a single 25 mg oral dose of psilocybin or a single 100 mg oral dose of niacin. Niacin will serve as an active placebo. The purpose of this study is to evaluate the potential efficacy of a single 25 mg oral dose of psilocybin for MDD compared to the active placebo in otherwise medically-healthy participants, assessed as the difference between groups in changes in depressive symptoms from Baseline to Day 43 post-dose.
Gender: All
Ages: 21 Years - 65 Years
Updated: 2026-04-22
10 states
NCT07540585
MOCHA: Embedded Inpatient Mental Health Care for High-Risk Perinatal Patients
Pregnant and postpartum patients hospitalized for medical complications experience high rates of depression, anxiety, and trauma-related symptoms, yet access to timely psychiatric care during obstetric hospitalization is limited. Project MOCHA integrates early mental health screening, trauma-informed psychotherapy, and structured follow-up into routine inpatient maternity care for individuals at elevated clinical risk. This single-arm implementation study examines the feasibility, acceptability, and fidelity of delivering a Collaborative Mental Health Care Program within a high-risk obstetric inpatient setting. The program includes brief inpatient psychotherapy, symptom monitoring, and post-discharge follow-up over three months. Preliminary changes in depression, anxiety, attention-deficit hyperactivity disorder, and posttraumatic stress symptoms will be assessed to inform future effectiveness trials and broader health system integration.
Gender: FEMALE
Ages: 18 Years - 100 Years
Updated: 2026-04-22
1 state
NCT05306184
Prospective Assessment of Cost-effectiveness and Side-effects of Depressive Patients Treated With ECT or TCA
Prospective observational cohort study to determine cost-effectiveness of ECT compared to medication in the treatment of major depressive disorder (MDD) in the Netherlands.
Gender: All
Ages: 18 Years - Any
Updated: 2026-04-21
NCT06913309
Clinical Efficacy, Safety, and Applicability of Home-based Bright Light Therapy in Outpatient Adolescents With Major Depressive Disorder
Major Depressive Disorder (MDD) is a chronic disease characterized by a high prevalence, low cure rate, and significant disability. Globally, depression is recognized as the leading cause of illness and disability among children and adolescents. Bright light therapy (BLT) has been established as an effective treatment for seasonal affective disorder and has demonstrated considerable efficacy in adult patients with MDD. However, its application in adolescent patients with MDD remains largely unexplored. The aim of this clinical trial is to evaluate the clinical efficacy, onset time, safety, and applicability of BLT in adolescents with MDD and to explore the potential neural mechanisms by which BLT enhances emotional and cognitive function in this population. This is a multicenter, randomized, controlled, double-blind study. It will involve adolescents aged 13 to 17 who are either untreated or have been stable on medication for at least one week. Adolescents with MDD will be randomly assigned to one of three groups: a high-intensity bright white light intervention group, a medium-intensity bright white light intervention group, and a placebo control group receiving dim red light. Each group will undergo four weeks of light exposure, six days per week, for 40 minutes daily between 6:30 and 10:00 AM. During the light exposure period, follow-up assessments will be conducted every weekend, and participants will be followed for two weeks after the completion of light exposure.The primary outcome will be the change in total scores on the 17-item Hamilton Rating Scale for Depression (HAMD-17) from baseline to week 4. Secondary outcomes will include response and remission rates, time to onset, maintenance of efficacy, self-reported depressive symptoms, sleep quality, cognitive function, anxiety, irritability, suicidal ideation, non-suicidal self-injury, self-efficacy, and the overall safety profile of BLT. Additionally, the study will include healthy adolescent controls and collect functional Near-Infrared Spectroscopy (fNIRS) from both the adolescent participants with major depressive disorder and the healthy controls at baseline. The fNIRS and MRI data will also be collected from the adolescent participants with MDD at the end of the intervention, in order to investigate the potential neural mechanisms by which light therapy alleviates depressive symptoms in adolescents.
Gender: All
Ages: 13 Years - 17 Years
Updated: 2026-04-21
2 states
NCT06511908
Investigation of the Antidepressant Effects of (2R,6R)-HNK, an Enhancer of Synaptic Glutamate Release, in Treatment-Resistant Depression
Background: Major depressive disorder (MDD) is a serious mental illness that can put people at risk of self-harm and death. Many drugs are used to treat MDD, but it can take a long time for them to be effective. Researchers want to know if a faster-acting drug, (2R,6R)-hydroxynorketamine (HNK), can better treat the symptoms of MDD. Objective: To test a study drug (HNK) in people with MDD. Eligibility: People aged 18 to 70 years with MDD. They must have had a screening assessment under protocol 01-M-0254. Design: Participants will be tapered off their current MDD drugs over 2 to 5 weeks. They will stay off of the drugs for up to 2 weeks prior to starting the study medication and procedures. They will have a physical exam with blood tests. They will have tests of their heart function, mood, and thinking. They will answer questions about their symptoms. They may choose to have imaging scans and scans of their brain activity. HNK is given through a tube attached to a needle inserted into a vein. Participants will receive infusions on this schedule: They will receive 4 infusions over 2 weeks. They will stay in the clinical center overnight after each infusion or for the duration of the study. They will receive no drugs for 2 to 3 weeks. They will have 4 more infusions over 2 weeks, with overnight stays after each or for the duration of the study. One set of 4 infusions will be the HNK. The other set of 4 infusions will be a placebo. A placebo looks just like the real drug but contains no medicine. Participants will not know when they are getting the HNK or placebo. ...
Gender: All
Ages: 18 Years - 70 Years
Updated: 2026-04-16
1 state
NCT05518149
A Study of Aticaprant in Adult and Elderly Participants With Major Depressive Disorder (MDD)
The purpose of this study is to assess the long-term safety and tolerability of aticaprant administered as adjunctive therapy to a current antidepressant (selective serotonin reuptake inhibitor \[SSRI\] or serotonin and norepinephrine reuptake inhibitor \[SNRI\]) in all participants with major depressive disorder (MDD).
Gender: All
Ages: 18 Years - 74 Years
Updated: 2026-04-15
22 states
NCT05267873
Combining Data Sources to Identify Effect Moderation for Personalized Mental Health
This work will extend and apply methods for modeling heterogeneous treatment effects when multiple studies are available, with a particular focus on the complexities in mental health research. The methods will be illustrated in examples estimating the effects of medical treatments for major depressive disorder (duloxetine and vortioxetine) using 4 randomized controlled trials (available in the Vivli trials resource) and non-experimental data from the Duke University Health System electronic health record and the Johns Hopkins Health System electronic health record systems.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-04-13
1 state