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Tundra lists 306 Major Depressive Disorder clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.
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NCT00018057
Study of Neuro-Cognitive Correlates of Pediatric Anxiety Disorders
Study Description: This study examines relations between neurocognitive and clinical features of pediatric anxiety disorders. The study uses neuro-cognitive tasks, functional magnetic resonance imaging (fMRI), as well as magneto- and electro-encephalography (M/EEG). Patients will be studied over one year, before and after receiving either one of two standard-of-care treatments: cognitive behavioral therapy (CBT) or fluoxetine, a serotonin reuptake inhibitor (SSRI). Healthy comparisons will be studied at comparable time points. Primary Objectives: To compare healthy youth and symptomatic, medication-free pediatric patients studied prior to receipt of treatment. The study seeks to detect relations between clinical features of anxiety disorders at baseline and a wide range of neurocognitive features associated with attention, memory, and response to motivational stimuli. Secondary Objectives: 1. To document relations between baseline neurocognitive features and response to Cognitive Behavioral Therapy (CBT) or fluoxetine, as defined by the Pediatric Anxiety Rating Scale (PARS) and Clinical Global Improvement (CGI) Scale. 2. To document relations between post-treatment changes in neurocognitive features and anxiety symptoms on the PARS following treatment with Cognitive Behavioral Therapy (CBT) or fluoxetine. 3. To document relations among broad arrays of clinical, cognitive, and neural measures Primary Endpoints: Indices of percent-signal change in hypothesized brain regions, comprising amygdala, striatum, and prefrontal cortex (PFC) for each fMRI and MEG paradigm. Secondary Endpoints: 1. Treatment-response as defined by a continuous measure, the Pediatric Anxiety Rating Scale score (PARS), and a categorial measure, the Clinical Global Improvement (CGI) score. 2. Levels of symptoms and behaviors evoked by tasks that engage attention, memory, and elicit responses to motivational stimuli.
Gender: All
Ages: 8 Years - 65 Years
Updated: 2026-07-15
1 state
NCT05224063
Probing the Dorsolateral Prefrontal Cortex and Central Executive Network for Improving Neuromodulation in Depression
Depression is a highly prevalent condition characterized by persistent low mood, energy, and activity that can affect one's thoughts, mood, behavior, and sense of well-being. Repetitive transcranial magnetic stimulation (rTMS), a non-invasive neuromodulatory technique, is an effective treatment for depression when targeting the dorsolateral prefrontal cortex (dlPFC) of the central executive network (CEN). However, remission rates are suboptimal and individual methods to target the dlPFC are lacking. In this study, we will enroll 50 patients with major depression and in a single rTMS 'dose,' prospective, randomized, double-blind, cross-over design will assess whether rTMS targeted to an individual's central executive network (CEN) assessed by single pulse TMS can enhance network modulation. If successful, this work will lead to a clinical rTMS trial comparing this personalized targeting approach against standard rTMS.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-07-15
1 state
NCT06705478
Pramipexole Versus Escitalopram to Treat Major Depressive Disorder (MDD) and Comorbid MDD With Mild Neurocognitive Disorder (MND) in Persons With HIV
A phase II, randomized, open-label, two-arm clinical trial evaluating the safety and efficacy of pramipexole extended release (ER) versus escitalopram for the treatment of major depressive disorder (MDD) and comorbid MDD with mild neurocognitive disorder (MND) in persons with HIV (PWH). Participants will be assessed comprehensively and briefly at intercurrent visits to monitor for toxicity, response to therapy, and to assess for dose changes. An optional sub-study to evaluate treatment impact on the cerebrospinal fluid (CSF) profile will be conducted in a subset of 36 participants.
Gender: All
Ages: 18 Years - 70 Years
Updated: 2026-07-14
22 states
NCT07703722
Effect of Psilocybin and Structured Integrated Reframing Therapy on Gut-Brain Axis Biomarkers and Depression in Major Depressive Disorder
Trauma-related Major Depressive Disorder (MDD) is frequently associated with poor response to conventional antidepressants, persistent psychological distress, and alterations in gut-brain axis function. Existing assessment tools primarily diagnose depression or PTSD but provide limited guidance for integrated clinical management. This study aims to develop and validate the Trauma Anxiety Depression Emotion (TADE) management tool while simultaneously evaluating the effectiveness of psilocybin-assisted Structured Integrated Reframing Therapy (SIRT) in improving clinical and biological outcomes. This prospective, four-arm randomized controlled trial will compare conventional therapy, psilocybin therapy, SIRT, and psilocybin-assisted SIRT. Participants will undergo assessment using the newly developed TADE tool together with established psychometric scales including HAM-D, PCL-5, and GAD-7. Biological outcomes will include serum gut-brain axis and inflammatory biomarkers, including Short-Chain Fatty Acids (SCFAs), Interleukin-6 (IL-6), Interleukin-10 (IL-10), Zonulin, Occludin, and Glial Cell Line-Derived Neurotrophic Factor (GDNF). Assessments will be performed at baseline, during treatment, and at 12-week follow-up. The study aims to determine whether combining psilocybin with SIRT provides superior clinical improvement and favorable biological changes compared with either intervention alone while establishing the validity and clinical utility of the TADE management tool.
Gender: All
Ages: 18 Years - 60 Years
Updated: 2026-07-14
2 states
NCT06605105
Phase III Long-term Extension Trial to Assess Safety and Efficacy of CYB003 in MDD (EXTEND)
This is a long- term extension of the double-blind trials APPROACH (CYB003-002) and EMBRACE (CYB003-003). Its aim is to examine the safety and long-term efficacy of CYB003 in participants with MDD.
Gender: All
Ages: 18 Years - 85 Years
Updated: 2026-07-13
17 states
NCT06282146
Testing a Transdiagnostic TMS Treatment Target
The goal of this clinical trial is to test a new brain stimulation treatment target for individuals with depression plus at least one additional psychiatric disorder. The main question is to understand the safety profile of a non-invasive form of brain stimulation called accelerated intermittent theta burst stimulation when it is targeting the posterior parietal cortex. Additional questions focus on whether this stimulation improves symptoms of depression and other psychiatric disorders as well as whether this stimulation changes brain function.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-07-13
1 state
NCT05437588
Neural-Derived Plasma Exosomal MicroRNAs As Promising Novel Biomarkers for Suicidality and Treatment Outcome in Adolescents
This study is dedicated to help identify biomarkers for depression and suicide. The purpose of the study is to better understand these links to improve medical and psychiatric care in the future. This research is also to test the effects of standard treatment of depression on improvement in depressive and suicidal behavior and on biomarkers (e.g. miRNA) for these disorders.
Gender: All
Ages: 10 Years - 24 Years
Updated: 2026-07-13
1 state
NCT07017478
Mood Effects of Serotonin Agonists: Depression
This study will examine the effect of a low dose of the 5HT2A agonist LSD (26 µg), compared to placebo, on acute and protracted mood states in individuals with depression. The investigators will assess the relationship between mood-related symptoms and EEG as a neurophysiological marker.
Gender: All
Ages: 18 Years - 40 Years
Updated: 2026-07-10
1 state
NCT06341426
Psilocybin-Assisted Psychotherapy for Treatment-Resistant Depression: Comparing One Versus Two Doses of Psilocybin
The purpose of this study is to see if one or two doses of psilocybin is more effective in relieving depressive symptoms in patients with treatment-resistant depression (TRD). Researchers also want to know if a second dose of psilocybin is safe and well-tolerated. This study will see if psilocybin is effective, safe, and well-tolerated by tracking changes in depressive symptoms, suicidality, and side effects. This study will also see if a second dose of psilocybin has an effect on quality of life, functioning, cognition (thinking, reasoning, remembering), and how long depressive symptoms improve (or worsen) after psilocybin is administered.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-07-09
1 state
NCT04903522
Can the Affects Conveyed by Baroque Music Reduce Anxiety in Patients With Major Depressive Disorder ?
Major depressive disorder, or characterized depressive episode, is a common illness that limits psychosocial functioning and impairs quality of life. The initial goal of treatment for a major depressive episode is complete remission of depressive symptoms. The most commonly used treatments are antidepressants, psychotherapy or a combination of medication and psychotherapy. Music therapy can be considered as one of the complementary therapies in the treatment of the characterized depressive episode and many studies have shown a beneficial effect of musical interventions, even of short duration, on depression and anxiety. In depressive disorders, therapies such as hypnosis or phenomenological psychotherapies lead to modifications of consciousness during which the subject finds the means, notably non-reflexive and in the realm of the imaginary, to overcome anxiety. Generally speaking, in the field of musical cognition, it is considered that music affects the emotions. Unfortunately this approach is often insufficiently refined in cognitive psychology since it is most generally interested in the 6 fundamental emotions: joy, anger, fear, sadness, surprise, disgust. However, during the Baroque period (end of the 16th and 17th centuries), various philosophers and musicians analyzed with great finesse not these fundamental emotions, but more precisely the passions, or "shocks of the soul", that is to say the affects in their great diversity. These affects or passions are thus at the center of Baroque musical composition. In the Barhepsy project, it is suggested that listening to Baroque music, thanks to the rhetoric of the passions included in it, would allow the mobilization of the patients' affects and thus reduce their state of anxiety. During a follow-up consultation, the effects of a 30-minute "musical path" of baroque pieces will be evaluated, exemplifying the reduction of anxiety and the subsequent appeasement, on the conscious experience of subjects suffering from a characterized depressive state associated with anxious symptoms.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-07
1 state
NCT05850689
Study of Lumateperone as Adjunctive Therapy in the Treatment of Patients With Major Depressive Disorder
This is a multicenter, randomized, double-blind, placebo-controlled parallel-group, fixed-dose study in patients with a primary diagnosis of MDD according to criteria of the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) who have an inadequate response to ongoing ADT.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-07-07
14 states
NCT06979154
Pilot Study of Personalized Aperiodic Transcranial Alternating Current Stimulation in Antenatal Depression (PandA-tACS)
The purpose of this study is to develop the safety, feasibility, and tolerability of a personalized transcranial alternating current stimulation (tACS) approach in antenatal depression.
Gender: FEMALE
Ages: 18 Years - 45 Years
Updated: 2026-07-07
1 state
NCT05538910
Defining Neurobiological Links Between Substance Use and Mental Illness
Background: Nicotine dependence leads to about 480,000 deaths every year in the United States. People with major depressive disorder (MDD) are twice as likely to use nicotine compared to the general population. They have greater withdrawal symptoms and are more likely to relapse after quitting compared with smokers without MDD. More research is needed on how nicotine affects brain function in those with MDD. Objective: To understand how nicotine affects symptoms of depression and related brain function. Eligibility: People aged 18 to 60 years, at the time of consent, with and without MDD who do not smoke cigarettes or use other nicotine products. Design: Participants will have 2 or 3 study visits over 1 year. Participants will have 2 MRI scans no less than 4 days apart. Each scan visit will last 5 to 7 hours. At each scan, they will have urine and breath tests to screen for recent use of alcohol, nicotine, and illegal drugs. Before each scan, they will take 1 of 2 medications: nicotine or placebo. Participants will receive each medication once. They will not know which medication they are receiving at each scan. For each MRI scan, they will lie on a table that slides into a cylinder. Sometimes they will be asked to lie still. Sometimes they will complete tasks on a computer. Tasks may include identifying colors or playing games to win money. Each scan will take about 2 hours. Participants will answer questions about their thoughts, feelings, and behaviors before and after each scan. They will have a blood test after each scan.
Gender: All
Ages: 18 Years - 60 Years
Updated: 2026-07-07
1 state
NCT06547489
Zelquistinel or Placebo for the Reduction of Symptoms of Major Depressive Disorder
The goal of this clinical trial is to learn if zelquistinel works to treat depression in adults. It will also learn about the safety of zelquistinel. The main questions it aims to answer are: Does zelquistinel reduce depression scores in participants compared to participants who take a placebo (a look-alike tablet that contains no zelquistinel)? What medical problems are observed in participants who take zelquistinel? Participants will take one tablet of zelquistinel or placebo every week for 6 weeks. Participants will visit the clinic every week of the 6 week period to have the severity of their depression evaluated.
Gender: All
Ages: 18 Years - 64 Years
Updated: 2026-07-07
19 states
NCT06058039
Study to Assess the Effects of Oral NMRA-335140 in Participants With Major Depressive Disorder
This randomized, double-blind, placebo-controlled, multicenter study will evaluate the effects of NMRA-335140 (formerly BTRX-335140) on symptoms of depression in participants with Major Depressive Disorder (MDD). The study design consists of a Screening Period (up to 35 days), and a 6-week Treatment Period (during which participants will receive either NMRA-335140 or placebo). At the completion of the 6-week Treatment Period, participants who complete the study, provide informed consent, and meet the eligibility criteria may enter an open-label extension study (NMRA-335140-501).
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-07-06
32 states
NCT06058013
Study to Assess the Effects of Oral NMRA-335140 Versus Placebo in Participants With Major Depressive Disorder
This is a randomized, double-blind, placebo-controlled, multicenter study to evaluate the effects of NMRA-335140 (formerly BTRX-335140) on symptoms of depression in participants with Major Depressive Disorder (MDD). The study design consists of a Screening Period (up to 28 days), and a 6-week Treatment Period (during which participants will receive either NMRA-335140 or placebo). At the completion of the 6-week Treatment Period, participants who complete the study, provide informed consent, and meet the eligibility criteria may enter an open-label extension study (NMRA-335140-501).
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-07-06
25 states
NCT04502758
Sequential Bilateral Accelerated Theta Burst Stimulation in Adolescents With Suicidal Ideation
The purpose of this study is to gather information regarding the use of a new type of transcranial magnetic stimulation (TMS) called theta burst stimulation (TBS) for suicidal ideation in adolescents with Major Depressive Disorder (MDD). The investigators hope to learn if this TMS treatment improves suicidal ideation over 10 days and clinical outcomes over 1 year of follow-up.
Gender: All
Ages: 12 Years - 18 Years
Updated: 2026-07-06
1 state
NCT03573349
Ketamine Associated ACC GABA and Glutamate Change and Depression Remission:
This is a feasibility study and the goal of this project is to evaluate whether peak ACC GABA and glutamate, quantified as a CSF-corrected absolute concentration percent change from baseline, is associated with clinical remission, Montgomery Asberg Depression Rating Scale (MADRS) total score of \<10, to the anti-glutamatergic antidepressant ketamine. As MRS is expensive, we also aim to study a correlation between change in peripheral metabolites (GABA and glutamate) and central GABA and glutamate levels.
Gender: All
Ages: 18 Years - 65 Years
Updated: 2026-07-02
1 state
NCT06564818
"A Study of a Deuterated Psilocin Analog (CYB003) in Humans With Major Depressive Disorder"
The purpose of this study is to examine the efficacy, safety, and tolerability of CYB003 compared to matching placebo as adjunctive treatment in participants with MDD.
Gender: All
Ages: 18 Years - 85 Years
Updated: 2026-07-02
18 states
NCT05930509
Home-based Non-invasive Brain Stimulation for Treatment-resistant Depression Feasibility, Efficacy and Biomarker of Treatment Response
Depression has a yearly prevalence superior to 5%, but a 30% of patients cannot benefit of pharmacological treatment, resulting resistant to it. Transcranial direct current stimulation, due to its reduced invasiveness and easy administration showed to be a useful technique to treat these cases, and it is now broadly used in clinical practice. Moreover, thanks to technological advances, this treatment could be self-administered at home, reducing costs and improving scalability. The aim of this study is to confirm the efficacy, safety and feasibility of a home-based intervention for treatment-resistant depression To do this participants will perform a home-based tDCS intervention consisting of 30 minutes sessions, 5 days per week, for 4 weeks. Results should provide critical knowledge regarding home-based therapies for the treatment of resistant depression and evidence on brain mechanisms underlying response to non-invasive brain stimulation.
Gender: All
Ages: 18 Years - Any
Updated: 2026-07-02
1 state
NCT06462196
Natural History of Depression, Bipolar Disorder and Suicide Risk
Mood disorders, such as depression and bipolar disorder, are difficult to treat. One reason is that there are no objective ways to measure how these disorders affect the body and respond to different treatments. In this study, researchers want to perform tests on people undergoing clinical care for mood disorders. The purpose is to understand the experience of receiving treatment for depression, bipolar disorder, and suicide risk. We also hope that this study will help us to predict which medications will improve thoughts of suicide. People 18 years or older who are receiving treatment for depression, bipolar disorder, or suicide risk may take part in this study. Participants must have also been enrolled in protocol 01-M-0254. This study will be conducted at the NIH Clinical Center in Bethesda, MD. The study typically lasts up to 12 weeks, but may last longer if a participant s treatment continues past that time. Participants will have weekly interviews and questionnaires while they are being treated for their mood disorder. Other tests are optional and include psychological testing, blood draws, sleep tests, and imaging scans. These will be done at the start and the end of research participation.
Gender: All
Ages: 18 Years - 120 Years
Updated: 2026-06-29
1 state
NCT07111390
Feasibility of Home-Based Intermittent 60Hz Light Therapy for Major Depressive Disorder (MDD)
This pilot study evaluates the feasibility, safety, and preliminary efficacy of home-based 60Hz intermittent light therapy in adults with a major depressive episode (MDE). Participants will be randomized in a 2:1 ratio to receive either active or sham 60Hz intermittent light stimulation for 30 minutes daily (Monday through Friday) over three weeks. The light is delivered through a wearable headset. Clinical assessments will be conducted remotely at baseline, mid-point, post-treatment, and follow-up to measure changes in depressive symptoms.
Gender: All
Ages: 24 Years - 65 Years
Updated: 2026-06-29
1 state
NCT06941844
A Phase 3 Trial of DT120 for Major Depressive Disorder (Emerge)
A Phase 3 Double-blind, Placebo-controlled Study (Part A) with an Open-label Extension (Part B) Evaluating DT120 Compared to Placebo in Major Depressive Disorder - Emerge
Gender: All
Ages: 18 Years - 74 Years
Updated: 2026-06-29
16 states
NCT07147218
Accelerated TMS for MDD
An open-label, multi-center, prospective study to evaluate feasibility and efficacy of accelerated TMS for patients with Major Depressive Disorder (MDD).
Gender: All
Ages: 15 Years - Any
Updated: 2026-06-29
3 states