NCT06976840 · Marta Peciña, MD PhD
Rapid Antidepressant Dynamics in Acute Neuromodulation Treatments
(RADIANT)
What this study is about
The goal of this clinical trial is to learn how different types of non-invasive brain stimulation affect mood and brain function in adults with major depressive disorder (MDD). It will also study how brain stimulation may work together with antidepressant treatments.
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The goal of this clinical trial is to learn how different types of non-invasive brain stimulation affect mood and brain function in adults with major depressive disorder (MDD). It will also study how brain stimulation may work together with antidepressant treatments. The main questions this study aims to answer are: How do different patterns of brain stimulation affect mood in people with depression? Do brain networks involved in emotion and self-reflection respond differently depending on the type of stimulation? What are the combined effects of brain stimulation and antidepressant treatments on mood and brain activity? Researchers will compare different brain stimulation patterns and target areas to understand their individual and combined effects. Participants will: Receive three types of brain stimulation (intermittent, continuous, and sham) in different sessions Undergo MRI scans during the administration of either a fast-acting or conventional antidepressant. Complete mood assessments during the scan and for one week after each session This study may help identify brain-based strategies to improve treatment for depression. In addition, a subset of participants (\~10) will complete a reward-guided decision-making fMRI task for feasibility purposes.
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
- Adults ages 18-55 (\~60% female).
- Diagnosis of Major Depressive Disorder (MDD) with or without comorbid anxiety disorders (e.g., panic disorder) or Axis II disorders.
- Psychotropic-free at enrollment.
Exclusion criteria
- being pregnant or breastfeeding;
- diagnosis of psychotic depression, schizophrenia, bipolar disorder, or other Axis I disorders, except for anxiety disorders;
- severe substance use (excluding nicotine) in the last 2 months as determined by using the MINI, a structured interview that uses the Diagnostic and Statistical Manual of Mental Disorders;
- requiring immediate hospitalization;
- epilepsy or conditions requiring an anticonvulsant;
- receiving vagus nerve stimulation, electroconvulsive therapy (ECT), or TMS in the last 2 months;
- currently taking or have taken within the last 21 days psychiatric medication or augmenting agents;
- receiving depression-specific psychotherapy;
- actively suicidal or considered a high suicide risk;
- enrolled in another study; or
- MRI/TMS contraindication as determined by the fMRI and TMS screening questionnaires
Where
- Pittsburgh, Pennsylvania
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 May 22, 2026 · Source of record for eligibility and locations